The first episode and explanation to the year long series "Unus Annus" explains the purpose, duration, fate, and the ...

Mark and Ethan start the first last day of their lives right with a healthy wholesome breakfast. A tool is useless in...

Mark and Ethan prepare their bodies for the afterlife with a Neti Pot Cleanse. This horrifying contraption is designe...

The boys chase their dreams of joining Joey Chestnut in the MLE hall of fame.

Sensory Deprivation Tanks allow you to slip away from the noise of reality. The physical world melts away to reveal a...

Speed Cup Stacking is a time honored tradition enjoyed by thousands across the globe. Mark and Ethan attempt to learn...

To be clear, Cupping Therapy isn't bad. Mark and Ethan are bad. Cupping Therapy is an ancient healing art that involv...

It's been 12 Years since a certain video about girls and a cup hit the internet... and it's never been the same since...

It is inevitable. It is inescapable. Your fate is sealed, Ethan. Run if you must but it's coming for you all the same.

In preparation for the darkness of the void beyond, Mark and Ethan practice doing each other's makeup in a pitch blac...

Mark and Ethan strap on their baby hands and get straight to their most important job: Saving lives.

In November of 2019, Mark and Ethan went missing. The only piece of evidence that investigators could find was this t...

2 Truths and a Lie is a great way to get to know each other! But why not throw waxing in the mix to spice up the reci...

Poopsie Sparkly Critters are the latest and greatest slime toy sensation. Will they spit or will they poop? This ques...

Mark and Ethan are ready to celebrate their last Thanksgiving with you! And with Play-Doh! The tasty treat that's fun...

As their voices grow higher, Ethan and Mark's friendship grows stronger.

These memes are dead. Long gone and long forgotten. But we cherish the memory of these memes by bringing them back fr...

Ethan is a man of many talents. Accents is one of them. Watch and be amazed as he regales you all the accents of the ...

A.I. is advancing at an incredible pace and Talk to Transformer is the latest example of Artificial Intelligence bein...

Mummification is the key to eternal life after death. The ancient Egyptians went to great lengths to make the best mu...

Chubby Bunny is so last decade. We're bringing challenge videos into the 2020s with the Chubby Gummy Challenge. And y...

Hypnosis is the art of suggestion. And in 2019 there just so happens to be professional hypnosis videos for sale on t...

Escape Room... such a simple concept. You are trapped in a room and you have to escape. If you fail, the darkness wil...

The time has come. We gave you a challenge but you failed. Now, Mark's precious van must pay the price. Rest in Piece...

The Barrel has left us and is with the great mechanic in the sky... but there may still be hope. Through the power of...

A Viking Funeral is when you send your dearly departed down a river on a boat and then light that boat on fire with a...

The boys call upon their German heritage to help them stuff the most delicious sausages in the world.

Mark and Ethan open their inner eye’s through the power of Acupuncture

We tried to make a sensory deprivation chamber and failed miserably. Now... we go to the real deal. With 1500lbs of s...

Death is always watching... and in this case, it has a paintball gun.

Just 2 bros making nude paintings of eachother in the buff. Nothing wrong with it. Nothing right with it either but t...

You blew us away with the incredible music you crafted in honor of The Barrel. Now The Barrel can live on in our memo...

Through the power of the Life Straw, Ethan and Mark taste each other's urine.

Strange noises have been emanating from Mark's basement. He dares not venture down there. He is no fool. But he knows...

You helped us reach our goal faster than we ever thought possible. And true to our word, we set out to hand deliver t...

As an act of friendship, Ethan attempts to calm Mark's stress with a little spa time.

Mark wants to be immortalized in a sculpture but marble is too expensive and experts even more so. Thus the only opti...

We're bringing Tier Lists into the 2020s with our Pain Scale to benchmark our most painful experiences.

In the spirit of giving, we set to work to fill up Mark's sleigh with the help of our good pal JackSepticEye

Like Icarus who came before them, Mark and Ethan fly too close to the sun. Or at least... they attempt to fly. Shoot ...

Mark and Ethan attempt to match Santa's insatiable hunger by consuming a mere fraction of the egg nog and cookies tha...

In an attempt to complete the circle of life, Ethan turns Mark into Saint Nick.

Improving our minds, bodies and souls is our #1 priority, so to preserve our temples of flesh even more, we dipped th...

In search of a controlled environment to let out their anger, Mark and Ethan visit Rage Grounds in Los Angeles. No bo...

Here at Unus Annus we've already rated our worst Physical Pains... so now it's time to rank our Emotional Pain. Watch...

Crucifixion was abolished a long time ago but no one was around to stop us so we took some duct tape and tried to att...

The eyes are the window into the soul. You better not look away... you might miss something.

The Presidential Fitness Test is a benchmark to see if the youth of America are up to the arbitrary standards of fitn...

There is only one RIGHT way to start a new year: By submerging yourself in freezing cold water. #ColdusAnnus

Time has run out. Amy has returned. Will we be able to cover up the evidence of our sin from Amy's eternal peepers?

Bugs are all around us. Tiny little morsels of nutrition just waiting to be cronched. Would you monch an insect? We d...

A bungee jump is a great way to get an adrenaline rush but it's so expensive! So we decided to make our own DIY Bunge...

Mark and Ethan go into the deep, dark depths of YouTube in search of the best and worst thumbnails.

We are perfectly average humans in every single way. But with the power of technology can we BUILD ourselves taller?

SEIZURE WARNING!! What's the opposite of a sensory deprivation tank? A SENSORY OVERLOAD TANK! Ice bath + Eating Garli...

We won't be around forever... so what better way to immortalize ourselves than recreating ourselves as a cursed manne...

It's finally time to find out who has big brain and who has smol brain.

Mark teaches Ethan the ways of becoming a man... through hard MANual labor. Little does Ethan know the painful surpri...

In yet another step towards preparing for the inevitable end, Mark and Evan go shopping to find the perfect casket.

For as long as humans have been able to speak, we've been able to lie. But thanks to modern lie detector technology, ...

Just two dudes in a hot tub...

We try to fix the hole Mark punched in the wall with ramen to test the myth of whether it can be used for repairs. Al...

In an effort to steal his identity, Mark makes a mold of Ethan's face

The rules are simple: You Breathe, You Die.

Salsa is the ancient art of dance whereby the dancers express thoughts and emotions through the undulations of their ...

What does it feel like to be old? Well now you can find out with our patent-pending geriatric simulator!

There are so many ways that our mortal souls can perish, but today we find out EVERY possible way that they could dri...

Long have men dreamed of eternal life. Walt Disney famously froze himself to awaken in a world ruled by The Mouse. To...

A Taser is NOT a toy! Do not try this at home. Mark is a professionally trained idiot with people on standby to help ...

We explore the wasteland of channels past. Gone but not forgotten. Because the internet never forgets.

In search of the energy to fuel a long day of making sweet sweet internet content, Mark and Ethan turn some bad bad b...

Hypnotherapy is the art of mental suggestion. This isn't the stage entertainment variety of hypnosis. This is real th...

Art comes in many forms. This time it comes in the form of our bodies.

Mark and Ethan learn the inner workings of the wonderful human body.

Ethan messed up. He messed up real bad... and now he has to pay.

Eventually, we'll all have to decide what is to be done with our remains once we pass on. How will you be remembered?

Mark and Ethan explore the wonderful world of cheese. Will they succeed in becoming world class cheesemongers, or wil...

Using the sacred texts of 5 Minute Crafts, we harness the incredible power of "life hacks" to achieve immortality.

Time never stops marching forward, even for memes. Like a black hole, once memes slip past the point of relevance the...

While delving into the deepest pits of the Internet, Mark and Ethan discover the secret to everlasting life.

In an attempt to keep his youth, Mark transform into an E-Boy

Ethan, a god of beauty, looked upon the world of male beauty and found it WANTING. Taking matters into his own, meaty...

Mark and Ethan turn to a professional to feed their cupping addiction. Fire cupping - facial cupping - acupuncture cu...

Mark and Ethan experiment with miracle berries-the fruit that turns sour things sweet. Is there a limit to what these...

Yes, you read that right. Mark and Ethan learn how to literally eat fire. Don't try this at home.

While being watched over by the Axe Gods themselves, Mark and Ethan compete to see who is truly the axe-throwing cham...

Testing the limits of the human body, Mark and Ethan lay themselves upon a bed of broken glass. So sharp and so deadl...

Mother Nature thinks that she alone holds the power of the elements in her big meaty claws - well what will she think...

14 years ago,Mark changed the game of Nutball forever by inventing it. And now... Ethan gets to experience the glory ...

To become a master of life and death, one must first become a master of the body. A master of movement. A master of m...

It's perfectly normal to discuss the possibility of how you would murder your friends with those friends and converse...

Mark and Ethan try to answer some of life's most perplexing questions. Are we already dead? How many ways have you pa...

Today, Mark and Ethan discover the TRUE meaning of everlasting love.

Mark and Ethan go to college to further their educational studies. It's big brain time.

Ethan bought Mark some gifts. Mark does not know why. Ethan does not even know what the gifts are. This is a lesson o...

The eternal question: what came first? Life? Or Death? Fiona helps guide us towards The Truth.

The Presidential Fitness test is so 2019... in 2020 it's time for the KING's ROYAL FITNESS TEST!! And we have a speci...

Dog's are incredibly intelligent creatures that can be trained to guard your life. We learn about this process and ex...

Mark and Ethan hone their mighty skills in archery. Not even death can escape their flying arrows. - or can it?

Today, Mark and Ethan give their morals the toughest test yet.

Goat Yoga. Yoga with Goats. The Yoga that you do with Goats. Yoga of the Goat. The Yoga Goat.

Make the slime. Play with the slime. CONSUME the slime. Last we saw, the boys were unwilling to even touch the slime....

Heaven. Hell. Two places. Two different outcomes. Two sweet boys. Take the quiz. To Find out. Where they belong.

Beauty. We love it. We live it. We ARE it. Let's make some moves to get that hair longer than life

Mark and Ethan, joined by musician Leila Pari, craft lyrical genius in record time on the Santa Monica shore.

Sometimes you have to march to the beat of your own drum. But what happens when your drum matches the beat of your he...

Glass blowing is a hot and dangerous art form that involves skill, patience, and a whole heck of a lot of blowing. Ar...

Ethan is back at it again. His sleigh filled to the brim with horrible, horrible gifts to give his lovely friend Mark.

What happens when you combine the thrill of Nutball with the heart-stopping joy of a Taser? You get NUTBALL EXTREME!.

Feeling lackluster in their ghost hunting abilities, Mark and Ethan enlist the help of an expert to lead them through...

Today we explore the inner workings of our mortal coils with a fun little camera

Today we become the worlds most talented and skilled DJs

Chica and Spencer go HEAD-2-HEAD in an all out brain-off as we test them to see which of our dogs is the smartest of ...

Dissection is common in the science classroom. From worms to frogs to fetal pigs - but most of us started with a simp...

There's probably a reason why chiropractors are licensed. But we here at Unus Annus never let little things like lice...

Mark and Ethan have finally had enough. Its time for them to fight with their ultimate weapons of destruction: their ...

The Barrel finally has her send-off with an epic re-master by the wonderful Gregory Brothers (Schmoyoho).

WARNING: DO NOT TRY THIS. We were pepper sprayed by trained professional in a controlled environment. This is not a j...

Henna Tattoos are temporary works of art the represent the temporary nature of life. We cover our eyes and let our so...

The stars created us. They Define us. And they will end us. Today we check our birth charts to see what's in store fo...

Life is about understanding one's self. So what better way than to have an enormous machine shoot x-rays through your...

Mark's mom was a licensed massage therapist at one point in her life. Does her son carry the innate talents to allow ...

We join Jay's Prehistoric Pets to see some amazing reptiles! Lizards, Alligators, and GIANT SNAKES!! Will we be eaten...

Amy bought us a portable sauna that allows you to enjoy a steamy sauna wherever you'd like! Just add liquid! Unfortun...

When $10,000,000 is on the line, Mark and Ethan will stop at nothing(?) to find and capture America's Most Wanted Cri...

How the Grinch Stole Christmas (with Jim Carrey) is the greatest film ever created. This cannot be disputed.

It's 2020 people. Get with the times. Go into that app store, and find yourself a free app that will predict your fut...

Mark and Ethan will never know the TRUE feeling of child labor, but today they attempt to simulate that miracle.

Childbirth is such a beautiful thing! And here at Unus Annus we are experts at taking something beautiful and transfo...

After 2 days of labor and delivery, Unus and Annus have given birth to 2 beautiful baby boys! Now they get to experie...

James Charles joins us as we attempt to run a Military Obstacle Course!

Well, here we are. The first day of Quarantannus. In an effort to prevent the spread of COVID-19, Mark and Ethan atte...

Reddit 50/50 is like a coin toss, where the outcomes are severe mental scarring that will last for the rest of your l...

Mark and Ethan scour the worldwide web to find the internet's funniest, cringiest, and most satisfying images.

While we can't go out into the real world, we decided to take an adventure in the virtual world of VR Chat

What if you had only one bag to grab before sprinting for your life into the woods? Would you be prepared for an apoc...

In every Zombie Apocalypse that I've ever been through, I've had to make some difficult choices. Do Mark or Ethan hav...

Recruited from all corners of the internet, Mark and Ethan create their own YouTuber Boxing Teams to try and find out...

Zoom - Discord - Skype - Google Hangouts - While companies fight for dominance in the explosive video conferencing in...

Where has Unus Annus gone? Where have they disappeared to? Have you seen them? Are they already in the house? Is it t...

Dirt. Dirt is all Mark had for fun as a child, but now that he's a big rich YouTuber, he can finally make his childho...

Mark is the most talented human in the world and took #MarchusAnnus very seriously.

Many people heard of the mythical website known as Wikifeet... but few dare to dip their tootsies in the deep end of ...

Chaos ensues as Unus, Annus, Mark, Ethan and every single other YouTuber battle it out in the YouTuber Hunger Games

Mark thought he could hide that thing he did 4 years ago... Ethan thought he could forgotten the cringe he committed....

If you've ever played a classic game of Mad Libs, then you know it is often... not very funny. Luckily for us, Mark a...

Today we're kickin' it all the way back to fourth grade where Mark and Ethan earn the knowledge of our great states a...

Ever wanted to know how to speed read? Do you even know what speed reading is? Well... this is what it means to take ...

Some videos on YouTube have Millions of views. Some have Billions. But what about the Trillions of videos that have.....

On the internet, nothing can truly ever be gone... only forgotten.

Some things are just too scary, too creepy, too unsettling to be made up. These are some true stories of absolutely t...

**TW: Please be aware that in this video we discuss abuse and unhealthy relationship dynamics.** https://www.domestic...

Hundreds of brave treasure hunters have attempted to find it, but none have succeeded... until now.

A Wikipedia Race (aka Wiki Races) is the ultimate test of skill that 2 individuals could possible have. But with this...

Sometimes creepiness transcends mere words or images... sometimes only grainy footage from the 1990's can truly expre...

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Close your eyes... how are you still reading this? It doesn't matter. Let your ears take you on a journey around the ...

We dive deep into the realms of Google and Wikipedia to discover the truth behind the curtain of the Illuminati. Are ...

Mermaids. Piles of Gold. Talking Fish. All this and more lie before us in the great city of Atlantis... and today we ...

You thought you were safe. Scary stories on the internet are just stories... right? Your fellow comments have somethi...

What type of human being is the joint creature known as Unus Annus? What characteristics would this amalgamation of h...

Robots. Androids. AI. It's not all that far away... and neither is the revolution of said robots... and the end of hu...

There are many universal languages. Love. Music. Art. ...Tea? Using the most advanced computational technologies, Mar...

WARNING: Only the elite of the elite can even SURVIVE ATTEMPTING this incredible secret Unus Annus Handshake! YOU HAV...

We did it with men, so its only fair we do it with women too: Let's find out what TRUE beauty is.

'ya ever been bored?

The Ocean is a terrible place full of deadly creatures that will eat you without a moment's notice. You should never ...

what mysteries does our mysterious moon hold? does it hold mysteries that our mysterious minds could not even compreh...

Did you know Unus Annus has its own subreddit? We kinda forgot.

Here at Unus Annus, we've explored countless mysteries over the past few months. We've discovered El Dorado, Atlantis...

You have a pink trombone lurking inside of you... it's desperate to get out. And if you listen close enough... it'll ...

The world is full of fetishes. From the mainstream to the obscure, there's something for everybody out there. But wha...

Mark and Ethan scour the internet to try and find videos that make them FEEL something before their hearts stop

We dream of a future where A.I. will help humanity flourish. This is not one of those times.

They could be anywhere... lurking... waiting... hunting

Humanity is still evolving... still changing... "MUTANTS" as some know them to be. Humans with real life super powers...

As Shrek once told me in a dark alley on a stormy night, "Onions have layers..." That message has been cemented into ...

Unus AnnuSMR. You wanted this. You asked for this. You deserve this. Turn out the lights, turn up the volume, and get...

damn water you kinda THICC huh? ah haaahhhhhhhhhhhh

We're all going to have a gravestone someday, so why not create ours preemptively and really make it our own?

Two men of extremely adequate height discuss the upper limits of humanity's height potential. Not that it matters. He...

Korean is a beautiful language that Mark is currently learning. However he doesn't really know it that well. But that...

Bigfoot. Sasquatch. Another keyword. He goes by many names. But once you see the irrefutable evidence... you will onl...

6 months has already flown by. Only 6 months left to go on our little adventure. Have you forgotten that this is comi...

Once again, we look at all the wonderful, funny, and downright disturbing memes you fine folks have posted on the Unu...

Every wanted answers to the fun, interesting questions that keep you awake at night? Well today's your lucky day!

As pioneer Phillip J. Fry has previously established, it is totally possible to transcend reality through the imbibit...

This water is THICC. Think of the THICC'est thing you can think of. Thicker than THICC. That's this water. It's THICC...

It's a risky game as old as time itself: Strip Poker. One Winner. One Loser. One ring to rule them all. One ring to f...

You hear that? Off in the distance? That, my friends, is the sound of two gods screaming into the ether. It is the fi...

Umm... you probably shouldn't attempt to do this at home. In fact don't. Definitely do not do the this that we are do...

Mark and Ethan test how well they really know each other with the classic 1960's sensation known as the Newlywed Game...

The Boys Make a Boob... Quarantine will make anyone desperate.

Our bellies are the best bellies. Anyone who disagrees is WRONG with the FACT and will have their heads squooshed bet...

We called upon you: our lovely followers to confess your deepest, darkest secrets to us... and what we found was more...

Some secrets should stay buried...

If you are an UNUS... you are welcome here. If you are an ANNUS... begone!! You shall not befoul this sacred ground w...

If you are an ANNUS... you already know that you're welcome here. Those are an unworthy... I shall not even speak thy...

Annus has officially been declared the WINNER! Please skip to 2:15 to view Annus's glorious appreciation segment and ...

Hello! I see that you are also a person of culture who loves the beautiful things of life. Join us! Join us as we tak...

One half Unus, the other half Annus. Two halves of one whole. One soul. One Phone book now torn in half. We have big ...

Welcome to the First Annual Unus Annus Body Building Competition Extravaganza! Who will wear the crown of best bod?

Black Lives Matter. Let's work together as a community to make a real difference. Not sure where to begin? There are ...

We return once again to showcase our feats of incredible strength. Gaze upon our mammoth hams as we quash these juicy...

You hear that? That call in the night? The call for help? The call for justice? The call for a hero? WE will answer t...

As you know, the first annual Unus Annus Green Screen Competition took place just last week and now it's time to revi...

Ethan's dream has always been to learn the mysteries of the written word. With Mark's BIG BRAIN, he might just make a...

Mark is a bad bad man who needs to be exposed for his sins. Ethan is just the right big bold boy to roast Mark to a c...

Don't look to closely at these pictures. If you can see them... they can see you too. And then they'll know exactly w...

Carpentry may have proven too difficult for Ethan to master. Perhaps assembling IKEA furniture is more his speed. Too...

ah, America. Land of the free(?) Home of the brave(?) Do Mark and Ethan have what it takes to be top tier US citizens?

Fanart is the purest expression of appreciation. It is love distilled. It is light purified. Today, Mark and Ethan ex...

We tried our best at haunting the internet. But we should have known that we were no match for the demonic artistic a...

Although we may never be able to travel back to our childhoods, that won't stop us from recreating some of our favori...

Breaking boards of wood is the foundation upon which all forms of Martial Arts are based on. Karate... Tae Kwon Do......

BEWARE ALL WHO ATTEMPT TO WATCH THIS VIDEO! It's a curse or be cursed world in here. Actually though, this video is g...

None have been able to capture sadness as good as a crying YouTuber. Today, we harness that power to increase our vie...

Pee Sauna. You weren't ready. We weren't ready. And yet it comes for us all the same.

Ikea is known for easy-to-follow instructions for simple pieces of furniture that we are gladly able to hah just kidd...

Long have we yearned to gallop the great fields with our mighty hooves. The slurp from grand rivers with our mighty s...

Today we hone an ancient craft passed down from generation to generation: The Art of the Paper Airplane

Today, Mark will be putting the "fish" in Fischbach.

There is nothing illegal about learning how to lock pick. It is a perfectly normal activity to train oneself to do. P...

Today we shave the old fashioned way.

The palms are the back porches of the soul. We all know this. We all accept this. But when Mark's ego gets in the way...

Ropes have a million and one uses. It just so happens that that extra one use is BEAR TRAPPING. Definitely bear trapp...

Mark and Ethan teach you the crucial steps in sneaking into a movie theater with the old fashioned trench coat trick

After two perfect IKEA builds, the boys return to see if they can take their knowledge of ancient Swedish craftsmansh...

Mark has the densest bones known to man. Can Mark overcome this obstacle with Ethan's legendary teaching and or swimm...

The Jaw: the front porch of the face. It's the first thing you notice when you see a person, and the last thing you t...

We've been naughty naughty boys who've used one too many no-no words... and now it's time to face the soapy consequen...

The proof is in the pudding. And Mark's belly is jiggling like a bowl full of it.

Mark has told many stories of his childhood, and today we recreate them all.

Anything can be tumbled if you try hard enough.

Between 2 Cheeks | The Eternal Quest for THICC | Indiana Bones and the Temple of THICC | How to Train Your Donk | Mor...

Back in 18012, Benjamin Franklin created the single greatest invention of all time: Electricity. Today, we figure out...

Move aside ghost peppers! Get lost cinnamon! It's time for the candy bra to take center stage as the new YouTube sens...

Look, life's tough out there. If you are presented with an opportunity to look at a puppy, you would be a fool not to.

Today, we conquer a challenge that has been nipping at our heels since the day we began this journey: Pole Dancing

Cleanliness is next to Godliness, and we are currently in Hell.

We are a channel divided. Is pineapple on pizza a tasty treat that can't beat? We look forward to your vigorous debat...

Space: The Final Frontier. Today, Mark and Ethan accomplish their wildest dreams of going deep into space.

Here's a simple little game that you can play with your friends! All you'll need are some possibly rotten eggs and a ...

Fools. We've been fools all along. Why would we make cookie dough ourselves when we have an unlimited supply in the i...

Arts and crafts are definitely a strong-suit of Mark and Ethan's. Today they explore the world of bleaching their clo...

You've simply assumed it to be true. "Milk's Favorite Cookie," huh? Are you really going to keep believing the LIES b...

Our dogs ARE the best. Therefore they DESERVE the best. Chica is not spoiled. Henry is not spoiled. Spencer is not sp...

Someday soon, we'll get old. Our bodies will start to crumble, our teeth will rot out. Today, we prepare for that day.

How many times have you found yourself tied to a chair in a dimly-lit basement? TOO MANY!! Let us help you out of tha...

The secret to eternal youth? Lotions? Balms? Cream? No you absolute buffoon. Magnets!

Please... this is a joke. Don't ever ever ever ever do this ever.

Man versus Machine. Overcoming the inevitable robot takeover will one day be humanity's greatest challenge. But what ...

Sound Therapy is the art of tapping into the acoustics of the universe to coax the human body to heal itself. Basical...

What was once an innocent childs toy, is now revealed to be a dangerous chemical weapon

Chica is a good girl. But is she the right girl for the job? Is she capable of saving her father's life and becoming ...

Icarus was a brash fool who couldn't invent wings to save his life... AND HE DIDN'T! BECAUSE HE BURNT UP! AND IS NOW ...

We will not go gentle into that good night

Every year for one year only, Mark and Ethan go head-to-head to see who can shoot the biggest hoop.

Welcome to the wild, wild west. Where the air is dry, the men are manly, and the horses wear shoes, apparently.

There's always time to appreciate the stars.

Unus Annus is our name, and cranking it is our game

In their unending search for perfection, Mark and Ethan attempt to fix what may be their one and only flaw: their med...

No episode overview available.

Playing cards: to some, a fun family game. To others: the deadliest weapon known to man.

Lube? Check. Socks? Check. Safety? Overrated! Let's get our slide on!

No mere mortals are more qualified to shatter glass than two men who have spent years honing the craft of screaming a...

Only 100 days left. Will you make the most of it?

For the first time ever, Mark and Ethan share a drink. A very special drink.

Bloonies are the worst children's toy ever invented. Can the mysterious Wubble make up for it's shortcomings? Unus An...

Coming at you hot and fresh with another wholesome dog video. This time Mark and Ethan steal Chica's one and only pos...

No. Just no. Do not ever do this. We are certified idiots that have no credentials at all. Do not follow in the foots...

You think you've got what it takes to make an Unus Annus video huh? Pfft. You WISH you had the creative genius to com...

Hydro Dipping is the ancient art of submerging an infant in water and noxious paint fumes, symbolizing purification a...

You ask? We deliver. We here at the Unus Annus Research Lab are committed to giving you RESULTS, scientific method be...

Poor, poor Ethan. Over two decades on this planet and he still hasn't hit puberty yet. Don't worry though, Mark is he...

What can THESE HANDS do? How much power do they hold? Well... today we find out exactly how much these meaty claws ca...

Mark's mom is a master of self-defense. She will whip these two spineless babies into weapons of mass misdirection.

The Pyramids... the Colosseum... the Great Wall... and now, the Mark.

Today we take childhood games to the next level. We add in an element of danger. We on X-Games mode. Today we play th...

Dogs think that they’re so cool with their big teeth and mighty chompers. Well we have big chompers too! HUGE chomper...

TikTok has brought us another challenge to CRUSH. All it requires is for one of us to climb the body of the other as ...

This is NOT pudding... this is Jello... this is ONE GALLON of Jello.

Mark and Ethan hit the open road with nothing in sight but pickles and bears.

Rule #1. Always Remember the Buddy System. Mark and Ethan teach you how to pitch a tent when buddy can't see and the ...

We here at Camp Unus Annus will show you how to rescue a cat from a tree with our handy dandy Fuzzy Wubble Cat.

A quiet, restful night here at Camp Unus Annus.

When out in the woods, a lot can go wrong. In the case something does, you need to know how to bury your buddy quickl...

Want to know how to be closer with your team and/or buddy? Let your Camp Unus Annus Counselors, Mark and Ethan, show ...

Ever wanted to know how to make a fire with your BARE HANDS!? Well you might want to purge those thoughts... there's ...

Ethan thought it would be an ordinary night at Camp Unus Annus. But Mark had other plans... He prepared the Ultimate ...

Scarier than Bigfoot. More terrifying than the Yeti. The most dangerous creature is man and he's out for revenge.

Tune in for some real talk about this channel and the year it just so happened to exist in. It's all the tea and hot ...

What's the best way to massage your weak, mortal coil? Why, with hot stones, of course.

Do you smell that? That smell. A kind of smelly smell. The smelly smell that smells.... smelly.

Physics is pretty straightforward on this one. Energy in = Chicken out. Conservation of mass or something like that.....

We truly are living in the future. Technology has advanced to the point where we can mail our poop to be analyzed by ...

What does it truly mean to be in a marching band? Today, Ethan will find out.

After a lifetime of waiting, the time has finally come to taste our homemade brew.

Ethan is not very good at math. To prove just how not-good he is we decided to take a 4th Grade Times Tables Math test!

After improving milk's favorite cookie, the boys are back in search of perfection with their favorite summertime treat.

Scared Potters? You should be. This is an affront to all pottery aficionados out there.

Plants. We don't understand them and they don't understand us. But could there be a middle ground in the realm of pai...

The Shot Put is the Rolls Royce of Track and Field events. It's the one that everyone screams for. You love it. We lo...

It’s 2020! Why not get bored and pierce our ears???

Dog treats... how bad could they possibly be?

Amy isn't here right now so we came up with the very good idea to RECREATE Amy! But we might have maybe accidentally ...

LET IT RIP... into your friend's nutsack

McDonalds... Travis Scott... STEP ASIDE, TRASH. It's time for Unus Annus to take center stage in the world of BURG.

Oreos... Snow Cones... and now... Soda. We work tirelessly to bring you cutting edge research in the field of absolut...

This will be the final time we do ANYTHING pee related on Unus Annus... this is Pee Soda.

You ever wanted to blow something up with your mind? Yeah... us too.

We play soccer with a brick. Shall we say... don't try this at home?

We Attempt to make Holy Water, DIY style. Will we burst into flames? Will blessings rain down upon us? Will we make t...

What horrors lurk within this secret present that Amy sent to us? Will it kill us? Will it aid us? Are we even capabl...

The grip was loose... Ethan thought that he could get away with it but I see the truth... The grip was loose...

A unique behind-the-scenes look into The Unus Annus Creative Process! Look deep into the depths of our minds and desp...

Can't have the light without the dark, right? Today, to counteract the blessings of our holy water, we create UNHOLY ...

Ah butter... the chicken of the bread. Peasant's Gold! The froth from which deliciousness pours. We discover the long...

It's finally time for Backflip Guy to teach Mark how to do a backflip! And other handy dandy gymnastics tips and tricks.

Two boys. Two Cakes. One winner. Loser walks the plank.

Two sweaty men step inside the ring. Only one may leave. Probably the guy who's wrestled before.

Ethan brought Mark a challenge. And Mark literally cannot back down from a challenge.

Today we attempt the One Chip Challenge.

Totally Normal Egg Toss (GONE WRONG!) (GONE KNIFE!)

The real test of friendship are the bruises we make along the way.

It's fall, baby. Time to get into the season by doing an old classic: Bobbing for apples

Don't let Mark's inevitable Unus Annus injury overshadow the grace and poise on display here today... by Vixen Devill...

Two city boys get sent away to the farm.

Today we learn to channel our inner Orlando Bloom while mounted on a beautiful steed.

Break out the metal detector, because once again Mark has cooked up a new excuse to pummel Ethan with a dodgeball.

Legends speak of the difficulty of finding the mythical needle in the haystack. Today, we put that legend to the test...

You can't think your art is bad if you can never see it in the first place. Definitely just a plain white flag

Why can't two bros just succ each other with a vacuum???

Today, Mark conquers his fear of the deep, dark ocean. The fear of the unknown. The fear... of what lurks below.

We stretch. We move. We dance. We fly. We silk like no one else before.

We will never get another Christmas. Luckily, Ebay is here to help us forget the inevitable end through the power of ...

The spirit of halloween. How does it taste? How is the texture? How are the juices? Today, we rank them from least - ...

We've lost them. NASA last sighted them leaving the orbit of Jupiter. At their current trajectory they will exit the ...

This is what it means to go even further beyond the limitations of bobbing for apples. This is the kind of bobbing ou...

Editors... HAH! Who needs em? This video is completely unedited from start to finish! Even the thumbnail! All of our ...

Mark asked his mom to tell us if she knew any Korean scary stories. We had NO IDEA what she had in store for us... an...

No episode overview available.

Created in man's image... nothing can be scarier than the reflection of ourselves.

We've done a lot of things this year... it's time to cleanse ourselves

Thalassophobia is the fear of the ocean. Which Mark has. So, naturally, we force him to face his fear by throwing him...

Deep Sea Fishing is a relaxing adventure that really let's you get in touch with the ocean and the denizens therein. ...

Slenderman... The Rake... Jeff the Killer... Famous cryptids all, and with intense training and practice, we too can ...

We've learned much about ghost hunting throughout this year and now it's time for the final test. We bought the best ...

Disclaimer: Pumpkins were harmed in the making of this video.

What horrors await us in this wretched tub?

We didn't know that "sexy skeleton" was a thing... thanks for burning that into our brains Ethan. Welcome to the Unus...

The curse of the werewolf has struck Mark in full force, but he's too shy to transform on his own. So Ethan (and Chic...

Mark tortured Ethan in his outdoor escape room many moon ago. Now it's time for Ethan to return the favor with the sc...

One year. That was the deal.

Coming to terms with death and accepting it is all part of life. It's almost beautiful in a way. Did you make the mos...

If you could choose your last meal on earth, you probably wouldn't choose this.

A year is a long time to get to know someone. It's also just enough time to be annoyed by them. We tell each other wh...

Turns out we made a lot of videos this year, and if you're just joining us now, you may not have the time to watch ev...

One year is a lot of videos. We finally spill the beans on the videos that never were.

Only REAL men cry. And today we cry a lot.

Everyone's all boo-hoo about Unus Annus coming to an end, but have people really forgotten how terrible we actual are...

It's all come down to this.... our final fitness challenge.

We've had the pleasure of meeting so many unique and talented people over our one year. We call as many of them as we...

Mark and Ethan start one of the last day of their lives off right with a healthy wholesome breakfast. And a whole bun...

What awaits for us in the great beyond?

Tomorrow's the big day. Just one more sleepy before we say goodbye...

This is it. We will be deleting this channel live on stream. Join us for our final moments.