Why do humans have a third eyelid? - Dorsa Amir

Discover how evolution and natural selection influence why the human body has vestigial organs- body parts that no longer serve their original purpose.
--
You know that little pink thing nestled in the corner of your eye? It’s actually the remnant of a third eyelid. In humans, it’s vestigial, meaning it no longer serves its original purpose. There are several other vestigial structures in the human body, quietly riding along from one of our ancestor species to the next. But why have they stuck around for so long? Dorsa Amir investigates.
Lesson by Dorsa Amir, directed by Avi Ofer.
Animator's website: www.aviofer.com
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Thank you so much to our patrons for your support! Without you this video would not be possible! Mark Morris, Catherine Sverko, Misaki Sato, Tan YH, Ph.D., Rodrigo Carballo, SookKwan Loong, Bev Millar, Merit Gamertsfelder, Lex Azevedo, Noa Shore, Taylor Hunter, Kyle Nguyen, MJ Tan Mingjie, Cristóbal Moenne, Goh Xiang Ting Diana, Kevin Wong, Dawn Jordan, Yanira Santamaria, Prasanth Mathialagan, Savannah Scheelings, Susan Herder, Samuel Doerle, David Rosario, Dominik Kugelmann, Siamak H, Tracey Tobkin, Dwight Tevuk, Anthony Kudolo, Mrinalini , Yanuar Ashari, Ivan Todorović, Alex Schenkman, Brittiny Elman, Ryohky Araya, Paul Coupe, David Douglass, Ricardo Paredes, Bill Feaver, Eduardo Briceño, Arturo De Leon, Christophe Dessalles, Janie Jackson, Dr Luca Carpinelli, Heather Slater, Yuh Saito, Quentin Le Menez, Mattia Veltri, Fabian Amels, Sandra Tersluisen and PnDAA.

[@daenite2480]

"Why do humans have a third eyelid?" Me: we have a third eyelid?

[@seagrid888]

that is exactly why they chose that title. it makes us curious and want to watch. a clickbait. and i know this and i still click it

[@daenite2480]

@@seagrid888 it's not really clickbait or else every title is clickbait. Clickbait would be a misleading title.

[@uxleumas]

.

[@siriuskndfgsegg7495]

Where's the second?

[@arifhossain9751]

@@siriuskndfgsegg7495 Top and bottom eyelids are 2 seperate eyelids.

[@darkviking7135]

“The tail bone doesn’t hurt us” Have you fallen on that thing before?

[@celhpwns]

Man, I was thinking the same thing 😂.

[@steveishere8808]

Viktor Maes Mmm, that’s relatable

[@tiffanie4306]

@@celhpwns me too lol

[@cynthiasrecommendations6004]

@@celhpwns me too😂

[@snehabanerjee6544]

Yes! A thousand times

[@ritzzzblitzz6833]

Now due to high levels of pollution and sooty particles in the air, we might want to get our third eyelid back!

[@Davis...]

Yeh

[@nunyabiznes33]

I just want to see underwater without it hurting.

[@alxandro5504]

@@nunyabiznes33 yeah that’s not what your 3rd eye lid is used for

[@billymuffin11]

That'll take a while and that would mean we don't get to have one

[@kfdaftsaeroblox]

@@alxandro5504 for pelicans,it is.

[@ShootinStickz]

I REALLY didn’t like when the tail got sucked in

[@mockingwizard]

Me too! I felt uncomfortable for some reason

[@molly.dog8brooke792]

Mocking Wizard Me too

[@nija_2587]

Schhljoorp

[@junoguten]

Reject modernity, embrace monke.

[@lionstudios.e-o.7382]

Tails would help communicate, make more jobs, and move around, depending on the tail

[@photadyta]

I vote we bring it back please. I’m sick of getting my favorite winter wool sweater fiber stuck in my eye.

[@Manganization]

Walking through rain is also a bother. But I wonder if we lost it because of the greater chances for infection? Because, I can see that being an issue.

[@niyacer]

I want my third eye back too.

[@photadyta]

Nor will it render you capable of comprehending sarcastic witty humor.

[@YAGAMlRAlTO]

I wonder if that could be possible like if humans lived for a few centuries in an environment that needs it and it evolves back.

[@Daft69Punk]

Yeah me too, I vote we somehow change our genetic construct to bring back a structure which will take millions of years to regain function, rendering it useless to you right now as again, it is a genetic change needing millions of generations to grow such a structure. But yeah let’s vote to bring it back.

[@osse1n]

*Now everyone is touching their thumbs with the pinkies*

[@Larstig81]

I know I can't, but still trying. 🙄

[@ventu2295]

@@Larstig81 You can't? thats weird

[@1.4142]

@@Larstig81 Maybe you're trying from the back of the hand.

[@Larstig81]

I think I don't have enough flexibility in my pinky and thumb. They can touch each other with help from my other hand, but both hands have the same "problem".

[@Scorpio-mq9dk]

Lars I’m not sure that’s normal, but if it doesn’t cause any problems oh well I guess

[@wajeehthebaji]

"Why do humans have a third eyelid" I swear I thought for a second those "third eye" awakening videos with the crazy people were real for a second holy-

[@senbebe3320]

Haha well actually the third eye is not physically there but in a more mental/spiritual form but I respect ur decision on not believing about the third eye 😂

[@penguin-IDK]

Yeah I thought that too

[@GLASSB182]

Third eye is really referred to the penial gland in our brains. By rubbing your finger in an area above the center for your eyebrows you can exercise it, almost feel like a muscle in your head. Though you may remain skeptical, but it does have a sensation when concentrating on it. Though may or may not be the actual penial gland we're feeling, but that's the brief explanation.

[@mellovestodraw]

Me too lol

[@diet.mountain.dew.]

same

[@cursed7992]

Silly mortals, I have 16 eyelids

[@Sparky579]

Silly one . In the one who's without eyes

[@madkirk7431]

silly immortal, i have 10000000000 eyelids

[@demonicpasta5792]

. . ?

[@maruthimacha9418]

Wut!?

[@maju404]

me too

[@morsch2028]

4:05 In the end we all become Emojies.

[@Coconut-rn5of]

4:09- Ah yes, the next stage of evolution for humans is a giant floating emote. How delightful.

[@ellee30]

Wonderfully outstanding.

[@Natymxca]

life i finally understand jesuse made us so he could chat in twich 👳‍♂️👳‍♂️👳‍♂️💬

[@Bigfoot_With_Internet_Access]

We bigfoots have a lot of questions about humans, mainly like why do they camp in the woods and bother us

[@tygarner9142]

We’re just trying to meet you! You don’t have to be shy :D

[@AlexM-xj7qd]

r/beetlejuicing

[@aini9528]

becuz if we don't nurture our nature relationship we become distanced from it and fell down all the trees and change it to currency. And that's bad you know because u can't breathe currency and walk in it and listen to the silence of being itself like you can with forests.

[@mehruhameed4595]

You are LITERALLY in EVERY video that I've watched like wtfork dude

[@eugene1317]

Anime Connoisseur r/iusereddit

[@Hosu223]

Why did we get rid of the third eyelid though? (The functioning part at least) it seems pretty useful in any circumstance

[@yousefhadi1784]

There are more factors to evolution than just usefulness. I don’t know why it’s gone, but it’s likely due to other factors, such as mating.

[@MumRah]

Humans tend to do things against their own best interests. Perhaps this extend to evolution 🤔

[@billymuffin11]

But would be cool if we still had it because then we could maybe open our eyes underwater

[@rotua98]

probably maybe because our ancestor start living on the tree and a wind also lots of stuf such branch and leaf always hit their face and eyes

[@laulavinia]

Maybe our tools, enviroment etc changed and we didn't used them as much so it just died out on its own? I do not know 💀

[@waterunderthebridge7950]

Actually, the M. palmaris longus (and I guess the M. plantaris too for that matter) is really nice to have _because_ it’s basically useless. In case of serious injury to muscles and/or tendons you can remove them and use them as auto-transplants to repair more important muscles without sacrificing tendons which have a far bigger function

[@TheKlutz31013]

I don’t have it rip

[@ga.y.meofthrone]

What have you learned from this video? 0:50 *giraffes are heartless creatures*

[@allftw2677]

Hahaha , I got that reference, with the kid who wrote it on his test .

[@subhmaypatra7752]

😂😂😂 LOL !

[@anonwithamnesia]

Nah, why share food if you can have it for yourself?

[@springsxd]

Your voice is so soothing my third eyelid relaxed.

[@reichgail2660]

💀

[@vaidehiranade3046]

lol :)

[@DaSoggyTurd]

Definitely my favorite narrator for the channel!

[@tamanna4624]

This video : 5% about third eyelid 95% about other vestigial organs Title : why do humans have a third eyelid?

[@ABCD-hz5sq]

Tamy well it does explain that the third eyelid is a vestigial structure and gone to explain the vestigial structure and why certain vestigial structure even though useless still stuck around.

[@hkr667]

@@ABCD-hz5sq The point is: just name the video "What are vestigial organs?" This isn't pewdiepie's channel

[@Anomalous_Industries]

We have 0 vestigial parts. I am ashamed of TED for even making this. They're usually so scientific.

[@d_e_a_n]

Anomalous Perhaps you didn’t watch this video. What do you think that thing is in the corner of your eye. Human embryonic tails. Tail bone. Wisdom teeth still exist in most of us.

[@fortyseventen]

The 3rd eye...lid. So very reptilian!

[@ricardocosta113]

With this video I learned that the human being had several evolutions until he reached what he is today, that we have a third eyelid that basically is useless for just other animals and that the appendix is something that has always been with us. This video was very interesting in my opinion because it leaves us thinking about our evolution.

[@ambilir1858]

I accidentally read the title as 'why do humans have a third *eye* '

[@hermannbarbato]

"Humans are the result of trials, *errors* ..." Shows teenager chatting

[@mellowecho]

error404

[@paritoshjha28]

That was perfect

[@_justnick]

well, we all have seen wall-e, right? We know what's going to happen already

[@Ridhi259]

*I was like, what?, what?*

[@Zosso-1618]

Video title: *exists* Me: A *WHAT*

[@pumpuppthevolume]

it's not shrinked in cats

[@solis-ortus]

ممكن كل شخص غير ناطق بالعربية يستغرب من هذا التعليق لكن هذي طريقتي الوحيدة عشان اشكر الي ترجم الفيديو للعربية لأنه يقدم فائدة كبيرة جدا للمتابع العربي ، منها انه يتعلم english عن طريق الاستماع للكلمات وترجمتها وأيضا الاستفادة من محتوى الفيديو ، فشكرا شكرا شكرا لكل شخص ترجم اي مقطع ، اجركم عند الله بإذن الله

[@beblue3119]

'The tendon in your hand helped you swing from branch to branch.' Now I know why I'm so good at climbing 😎😎

[@kfdaftsaeroblox]

😂😂😂😂😂😂😂

[@Shaun.Stephens]

Yeah I don't have one of those things - which goes a long way to explain why I'm no good at pull-ups.

[@classifiesconfidential4330]

"The tailbone doesn't hurt us." Have you ever heard of sit ups?

[@bravomike4734]

Our asses got that right. :(

[@wistful4684]

exactly

[@ricxmarine1109]

Oh gosh so that was the thing that hurts when I try to do sit ups on the floor :(( a small thingie to cushion below the hips help tho lol

[@Zero_Is_Stopping_Time]

Have you herd of breaking your tail bone?

[@romella_karmey]

And when I ride a bicycle and the seat is hard af it bumps on my tailbone and it really hurtzzz ang magmahal ng ganitu...

[@soulsemblance3163]

I learn something new everyday I didn't even know we have a third eyelid thanks Ted

[@filochampion8632]

1:56 this was extremely unsettling

[@AverageAmerican]

that isn't the half of it

[@spacegrapez]

me: seeing ‘why do humans have a third eyelid’ me: not realizing it’s the pink thing in our eyes me: *we have a what now*

[@gavinbrown216]

I realized that it was the pink thing, but I was like: “That’s an eyelid?!”

[@shanavasnissan9061]

same

[@ethanrepublic4554]

Having a tail would have been so cool.

[@Gary4DLC]

But now imagine a hairless human tail.

[@lolicon453]

You’re telling me catgirls can make a successful revival?

[@bonflores8849]

You know a certain type of human has tails and they cover it up. 😂

[@MsBettyRubble]

@@Gary4DLC it would look like a regular arm with a few more joints, not a hairless cat.

[@FeLiNe418]

Not for me. It sucks when you want to runaway from the cops and they just grab your tail.

[@hinderance4060]

TedEd: Third eye- Me: Oh really TedEd: -Lid

[@jayhere_]

Funny story: His voice is so soothing that I literally drooled...

[@hazleenazlee506]

Yikes😬

[@wowza2050]

Me: we have a second eyelid?

[@paulgaither]

Ted: Why do we have a third eyelid? *Clicks* Also Ted: Tails!

[@mrflip-flop3198]

I have a that band things on my wrists, I guess my ancestors weren't the type to follow trends like walking on land.

[@eugene1317]

I have it on my left but not on my right tho??

[@Chihiro99685]

ᎦᏝᎬᎬᏃᎽ me too!!

[@momentary_]

If we ever have to go back to living in trees, you guys have a head start.

[@LatteWiiU]

A that?

[@matilde_5]

I think I don’t have it I might have tested incorrectly but uh Shoot

[@tanzil2244]

Such blissful animation work!

[@circusclownz124]

Imagine trying to sleep with a third eyelid for example, having to slowly close it like animals when they sleep and then closing your second eyelid

[@bsku0765]

"Why do humans have a third eyelid?" We... we do?

[@KainDestinedAscension]

68 likes :(

[@lara8975]

Sevcraft Games di Twitter che il profilo in generale e il mio nome utente e password di Twitter che il profilo in generale è perfetto e il mio nome utente e password di Twitter che il profilo in generale e password di Twitter che il profilo in generale e il profilo è un messaggio di speranza che il mio nome utente e password di

[@eatingcereal5646]

@@lara8975 ?? Que parla? (Il mio italiano no e buono.)

[@east1845]

I litteraly have triple eyelids, and i wanted to know if I wasn't alone and yeah..

[@kai-sl1dv]

@@east1845 lmao same! My friend was literally counting my eyelids and she was asking why there was so many

[@ThZuao]

As a guy living in a dusty place with fast winds, I want my third eyelid back!

[@egemenpecin9526]

close your eyes

[@hazleenazlee506]

You can purchase it nowadays

[@hazleenazlee506]

Wait I’m sorry wrong timeline

[@romella_karmey]

Googles are pretty cheap duh 🙄

[@cockycookie1]

Fake glasses

[@monkeypie8701]

I remember my grandpa being able to move his third eyelid and I'm like how do you do that?

[@nirmaladevi4639]

thanks for all your videos ted ed

[@danielchoi4490]

The appendix discussion is so outdated. We *know* that the appendix is a bacterial reservoir. But it's not to help digest food. It's to restore your microbiome. If your microbiome is disturbed, such as during diarrhea, the appendix is the organ that restores your microbiome if you survive the diarrhea (since those were a bit dangerous in ancient times). And since we're learning more and more how important our microbiome is, it then becomes evident how useful the appendix is. Of course, if it's causing problems, surgically removing the appendix is the right move. We've also discovered that people lacking an appendix tend to have a higher rate of infection (way more dangerous in ancient times). The appendix doesn't serve a visible function, but it's still pretty important. Also, if it was actually useless, then it'd make literally zero evolutionary sense why it evolved multiple separate times across many animals. No matter how random evolution is, a trait evolving separately multiple times is quite indicative that that trait serves an important function. Also the tail theory sounds almost as iffy. Almost all apes live in forested areas. Humans are basically the exception. Also, monkeys move around on the ground just fine even with their tails. This whole video in general just sounds pretty outdated.

[@XCM666]

So what are the alternative theories on why we lost the tail?

[@user-ol4cv3vv2i]

Dennis Clausen My educated guess is that bipeds don’t need it for balance

[@resonatedave]

This was my only liked comment

[@JacenSolo0]

@@user-ol4cv3vv2i But that's not going to be harmful?

[@sardavirus8094]

Just like david said, this is the only comment I liked

[@danieltroger1761]

I would have loved more information about the third eyelid. Like how it works, if our eyelid made it redundant, how life would be if we still had it. Felt a bit disappointing to only hear like three sentences to what was in the description

[@elmo4713]

Ted Ed: Why do we have a third eyelid? Video: literally nothing about eyes

[@greenishbean7904]

They state that in the beginning of the video, they just use it to transition to other topics.

[@camouflage81]

I lost my appendix. And since, I had stomach problems very often. I absolutely think that the appendix has some function of storing enzymes or something that helps digestion. Anybody else that can confirm the loss of it started digestion problems? Anybody that can dismiss it, that although missing the appendix you can eat anything without a problem?

[@popiko282]

I know some people who lost it and have no problems i guess it depends on the person but it does store some healthy microbes and help the immune system

[@maruthimacha9418]

I thought that this video was about the third eye of Shiva , But still I learned something.

[@user-uo1yn4se8r]

ugh. the third eyelid would be really useful for me.

[@dr.skulhamr3220]

Fascinating video! Good on you!

[@Aboredbulborb]

On days when I need to walk to the bus stop in the winter I always want a third wind proof eye lid, only to realize we have them and not be able to EVEN USE THEM!

[@celticlass8573]

Like when you realize your can feel that your eyeball is colder than your eyelid? Yeah, been there! Bring the eyelid back!

[@prometheus7387]

Great video Ted Ed! Lovely as always!

[@9000449050]

Camels over there saying "I swear our species are related!!"

[@teigenb829]

So, after googling and reflecting on my own knowledge of my anatomy, we only have the reminant of the third eyelid and not the actual lid (or membrane called the nictitating membrane). So to answer my own questions, no we can't manually close the lid since it's basically nonexistent, and if we did have it the membrane would have been translucent which would be dope.

[@cherrypicker4794]

Next time I see someone raving "evolution isn't real" I'll just point to their third eyelid

[@ammaraliiiiii]

Oh, I just realized that I couldn't pay attention to the video because I was so busy paying attention to that adorable animation

[@amritas2400]

When I hurt my eyes, the "third eye-lid" slowly covered that part of the conjunctiva until it healed itself. *I don't think it's a vestigial organ.* -- The vermiform appendix, which was long believed to be a vestigial organ, has recently been found to be the part that houses the useful bacteria which helps in digestion. *I don't think any organ in our body is useless, no matter if it has been scientifically proved or not.*

[@TFAShockwavebutcooler]

Amrita S oh wow

[@antonydabossman4001]

Well, yes. They say that. They explain how all the vestigial organs could be or are useful still

[@constantine4213]

You got this totally right! Science is based on the Real World. Not the opposite.

[@mrpotato4250]

I loved this video. I wish I had seen it a year ago to understand my biology class

[@cindyhua3951]

The thing that makes me think a lot is that with recent medical breakthroughs and advancements, it kind of disrupts natural selection in humans, because now that there's a problem, boom we just fix it physically, but our DNA still contains that problem, so it just keeps passing it on through our offspring unless a mutation occurs. Like, sometimes I think that medical advancements are bad because diseases and illnesses that could have killed millions helped with natural selection and now that they are gone or have treatments, those diseases/illnesses may never go away. Idk if I make sense though.

[@5x385]

0:52 "Giraffes are heartless creatures."

[@julieg3747]

I know! Can’t it Share!! I think they do though. I can totally see an elephant sharing with the herd

[@crabby7524]

I told my sister this, and she proceeded to poke my eye out to see if I was lying or not.

[@azraaydn737]

Crabby sisters...

[@zain4019]

Crabby That’s hilarious:) I feel bad for laughing. Siblings can be jerks.

[@mirroredchaos]

the appendix serves two purposes: it aids in the immune system similar to the tonsils. its also a reservoir for your gut biome, say you get food poisoning, your body flushes everything out and this cripples your current gut biome, luckly if you have your appendix, a batch of your micro biome survived inside it and will restore everything to normal.

[@user-tl3vp7nm2q]

I finally learnt what is this! Thank you😊

[@JustADioWhosAHeroForFun]

The thumbnail is Mike Wazowski with two eyes

[@josemarcelino1826]

Avi Ofer is such an amazing animator!!!!

[@mrsahilbawa]

TedEd: Why do humans have a third eye lid? Me: We have a third eye lid? o.O

[@haileyv-log2326]

This is not about why we have the 3rd eyelid, but it was useful.

[@_bri_was_here_]

When I woke up, I read this as, Why do humans have a third eye? And I was like whaaaaaaaaaaaaaaaa?????????

[@Quiscalus777]

The appendix plays an important role in immune function, SciShow released an interesting video on the topic fairly recently.

[@popiko282]

Yeah but it's not really essential we can do about i personally would do better without a litteral bomb That could explode any moment

[@ayushhinsu]

The animation is simple yet engaging

[@Meow_yj]

The animation is so good,...also the video !

[@jasonyau4725]

I have that extra tendon in my wrist!!!

[@femboyventi]

Same

[@Angie-xd6ql]

I don't ☹️

[@yuy2375]

i have on my left hand but dont have it on my right

[@junguwus7617]

@@yuy2375 same as mine! Are you right handed?

[@yuy2375]

@@junguwus7617 i heard i was born left, but raised as right. now im pretty ambi(right hand more flexible, left hand more strength), tho im more of a switcher(has preferred hand for different task)

[@riya1942]

When will the next *THINK LIKE A CODER* episode be released ⁉️ I am waiting for it😐😐 And I don't have that 'Palmaris Longus'😁

[@shion3948]

Thank you for explaining it! I was wondering what is that since I saw it on my cat's eye

[@bradleyfitzik3603]

I have that vine swinging tendon! And the remnants of a third eye in each eye!! Wow didn't know either before this video :-)

[@ovo5426]

The title is about the third eyelid. What's left in my head : an appendix

[@FR4M3Sharma]

Zuck's Third eye lid probably works.

[@CelticScorp87]

This is really cool and I found the animations amusing and had a laugh 😂

[@yellow_hearts2528]

I found out that this information is incorrect. The small pink thing is actually:The lacrimal caruncle is the small, pink, globular spot at the inner corner, or the medial canthus, of the eye. It contains both oil and sweat glands. The whitish material that sometimes accumulates in that region is from these glands. The tarsal plate is composed of connective tissue that gives support to the eyelids. I got this information from safari. My science teacher who was once a college professor told me that the lacrimal caruncle is actually part of the tear glands.

[@shantanupanda1650]

I have a vestigial muscle in my left arm, but not my right

[@Sir_knows_Alot]

yh me too, but why only 1 hand though? any educated guesses?

[@lolicon453]

Your ancestors were left handed

[@shantanupanda1650]

@@lolicon453 iM RIGHT HANDED.

[@grumpydusty]

Your ancestors were amputees

[@shantanupanda1650]

@@grumpydusty doesn't change the DNA, Nancy drew on the case

[@jephrey2671]

I kind of wish that we still had a third eyelid.

[@sera-chan8194]

I love your animation! :D

[@mister_mcmagic8338]

Me: that was neat Video: Up next: ANIMAL BALLS

[@starcloak]

The art style in this video is so cute and I love the topic, such a fun video❤️

[@zipity2782]

I didn’t even know there was a second eye lid

[@vidamartinez5541]

Umm maybe like your upper eyelid and your under eyelid is the second?

[@bIuestag]

guessing you only have 1 eye?

[@sunk6478]

@Itz Jasmine we all can read the title

[@sunk6478]

@Itz Jasmine "we all" applies to everyone in the reply section

[@SweetWatch]

What a lovely guising and imagination

[@stinkyfishy]

Third eyelid: **blinks** Me: **uncomfortable screeching**

[@user-ci2lg1lw5b]

해를 끼치지 않는다면 필요없는몸의 부위가 남을 가능성이 있다는것을 배웠습니다. 재미있고 유익한 시간이 되었습니다. 감사합니다. 언제나 응원합니다.

[@MrJayPuff]

The title doesnt make sense it really should be called vestigial characteristics

[@rsangeethapriya4242]

Thankyou so much ted ed. Need to teach in our own language to the people

[@agauggaming846]

Can someone tell me when is the update?

[@AJEETSINGH-nx9ll]

TELL ME WHO ELSE TOUCHED THEIR PINKIE TO THUMB LIKE ME.

[@Gary4DLC]

Who didn't?

[@synflwr]

I don’t have it

[@SubliminalQueen368]

NebuLucid me either

[@louckykoneko]

my biology teacher in high school told me that the appendix hadn't completely evolved out of us because it supported the immune system and lymphatic system somehow. is that just one of those "we can't find another reason for this thing to not disappear" reasons? (also, wisdom teeth are weird and I'm surprised you didn't mention them in the video)

[@trollgey124]

THIS VIDEO IS ABOUT EYELIDS, NOT MOUTHS

[@dazzlingdexter5060]

This would be so helpful

[@iamjgl]

I’m sorry but the animation in this video was the best I’ve ever seen, when the monkey got caught up in his own tail I actually cried laughing, that’s never happened before BRAVO 👏🏼 👏🏼 👏🏼

[@premsehgal2011]

Explaining about the third eye Goes straight to human history evolution

[@dove6069]

Ik right its funny , our ancestors were not apes 😂😂😂😂😂

[@AverageAmerican]

@@dove6069 Right. I'm more serpent, than monkey! hahaha

[@alwaysright6358]

Eyelid, not eye. It has everything to do with evolution. But, he should have spent more time talking about that extra eyelid.

[@Patience-gd4qu]

Why doesn’t mine work bro I need that kind of protection with my blocked tearducts

[@AverageAmerican]

that's what illuminati blood is for

[@davidprock904]

The part of putting your hand on a flat surface, I dont have it, but the ring finger raises also, when holding it down it still doesn't show, but my thumb is making the largest range of movement to the little finger if that makes any difference

[@SkySweetie]

Uh... I still find a use for it. When particulates get in my eye, I always find them nestled in that corner pocket which is soft enough for me not to register the particulate anymore... ie, it moves over there, doesn't hurt and then I can get it out.

[@safeersaadiq6385]

*Kindness* is a language that a deaf can hear and a blind can see

[@madkirk7431]

so its a free trial for hellen keler XD

[@Sir_knows_Alot]

@@madkirk7431 oh why did this crack me up 😂😂

[@stealth850]

The third eyelid doesn't work cause we already invented glasses. Or the Life Developer forgot to update life.

[@nuttcase1uk]

lovley bit of guess work,

[@christianhernandez4053]

I love these videos

[@ryandebruin9221]

Good video but we still don’t know why have remnants of a third eyelid.

[@petakos933]

My goodness, that tail just went into the bumhole