How do pregnancy tests work? - Tien Nguyen

Dig into the science of how modern over-the-counter pregnancy tests detect pregnancy with such a high rate of accuracy.
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Over-the-counter pregnancy tests give potentially life-changing results with a pretty high rate of accuracy. But how do they work? Tien Nguyen explains how each test performs a scientifically rigorous, multi-stage experiment that goes from start to finish in the time that it’ll take you to watch this video.
Lesson by Tien Nguyen, animation by Andrew Foerster.
View full lesson: ed.ted.com/lessons/how-do-preg...

[@DeidaraIsBestKATS]

If more schools decide to teach sex ed they should totally use these videos

[@roxyrules3604]

they (or my school) does teach sex-ed

[@froggielover5417]

-Chloe - mine doesn't do sex ed but they do puberty/period talks next year in the other school I will be going too will have a sex ed class as part of biology

[@oliviahelman4004]

-Chloe - my health teacher actually showed the class one of these

[@ariaa-s5180]

-Chloe - or if the schools that *did* teach sex ed wouldn't use fear-based abstinence-only tactics, they would show these videos.

[@pischtato6835]

*Michael * true

[@bushputz]

Egyptian child to mother, "Why does this bread taste funny?"

[@devanshvajpeyee8440]

Omg....lmao....!!

[@aishwaryagollar3747]

😂😂😂

[@userxsjksls]

This comment ended me dkshdsjs HAHAHA

[@samriddhisingh6482]

.....OH GOD NO

[@nezuko8559]

Omg🤣🤣🤣😂

[@tastes-like-straberries]

The fact that the Egyptians realised that the urine was something to test, and the test they designed, for their time this is really impressive!

[@IdOnThAvEaUsE69]

@@breewilson6376 It's more a question of should lol.

[@ronlacker326]

Ancient Egyptians were of White European DNA, not African. . . by the way.

[@h...848]

@@ronlacker326 egypt is in europe now?

[@ronlacker326]

@@h...848 Ancient Egyptians were of European genetics. Can't read basic English?😂

[@h...848]

@@ronlacker326 i see that i misread your point. still, where did you get that the Egyptians were white Europeans from?

[@norr0513]

Man gets positive on a pregnancy test “Honey...come here please.....”

[@k0meei]

Ashwin Verma what.

[@ludredgamer]

@Ashwin Verma that your pregnant

[@SlavicUnionGaming]

Or he has cancer

[@mariadirani8849]

Me:reeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeee

[@mariadirani8849]

Negative=not pregnant positive=pregnant

[@lukeo.6410]

I feel bad for the HCG. They do not look happy

[@Mac-43]

Foluke O. Hahahah

[@SpookyGhostHippy]

Foluke O. They fear for their lives

[@carlgrimeseyepatch27]

They look so stressed out hahaha

[@absinthefifi]

they scared me when i was young

[@allthingslexi6046]

Fifi O'Neil How? You can't see them

[@bluntlyhonest3157]

If you wait 9 months and no baby comes out, you weren't pregnant

[@nours2509]

Haha

[@cheetahjammerplaysaj591]

Lol I was born 5 months early

[@Terra-Antares]

He should be underdeveloped very very

[@oddeyes9046]

ok? hey headphones! I came here to hear the video!

[@bluntlyhonest3157]

ODDEYES then why comment at all? i don't care how old you are. it's 'this' not dis by the way

[@user-rr9ng9bo9l]

"Yay im pregnant" - guy who doesn't know he has testicular cancer

[@car1367]

Him : kzbin.infoAKLDnM1m3rg?feature=share

[@itssTeal]

Excuse me but *guy?*

[@charlottelin5784]

@@itssTeal yes

[@methalotus]

@@itssTeal testicles? you think biological women have testicles?

[@BackwardzCap]

Me who is 15 and had testicular cancer: **Relatable**

[@apoch003]

As a person who designs these tests, you explain it well for a layman. However, there are errors in your description. The secondary antibody doesn't attach a dye. Usually, the colour is produced by a colloidal gold particle (which is pink to red in colour), already attached to the second antibody. When the first zone is crossed, the urine interacts with the particle, but the particle is also moistened and begins to move WITH the urine sample and flow into the other zones where it is captured. You can confirm this by taking apart an unused pregnancy test, and a used one. You will see the "dye" (the gold particle) no longer is present in the first zone on the conjugate pad.

[@chiaseed9683]

Thank you!

[@apeman505]

Yeah as someone who does sandwich ELISA on the regular this was a little cringey to watch.

[@cartooncottage2024]

Whoa! You make these? Interesting.

[@merrivideo]

I came to the comments to confirm if this was an ELISA. Thanks.

[@breewilson6376]

Can women visit dentists during their period/ during pregnancy? Watch to find out: kzbin.info/www/bejne/i2W6haWwmduDe7c

[@PrinceChris93]

impressive how advanced Egyptians were.

[@MissGamerVideo]

apparently, they could have went to America before the British

[@Ali-tx3ep]

PrinceChris93 i am egyptian lol

[@algnadjib]

Look at my channel description not treally; they were bad sea navigators they only trust the Nile

[@UnicornAJ-xm1kr]

PrinceChris93 i

[@derecksantiago7019]

PrinceChris93 Illuminati....

[@rickiex]

Better yet, how the Fuk did Egypt think of peeing on some seeds??

[@BosonCollider]

rickiex Urin is a great fertilizer. To add to that, Egypt as a civilization existed for an incredibly long time, the Pyramids were over 2000 years old by the time Alexander the Great invaded Egypt in 332 BC. After 2000 years of people regularly pissing on seeds in a civilization with excellent written records, this kind of stuff will get noticed.

[@zerocalvin]

rickiex probably the same way that came up with the inject pee into frog test..

[@captinobvious4705]

rickiex the old ones are smarter than you think

[@MrRamazanLale2]

rickiex Because they are mor smarter than you

[@TheCompton1963]

exactly!!!!

[@pantstime4529]

3:51 doctor: “You were so brave during your tests! Here, have a floating red orb for being such a brave girl!”

[@samuelromero5786]

That's fuchsia 😒😒😒🙄🙄🙄🙄

[@ettinakitten5047]

My doctor didn't give me an orb :-(

[@scribblecloud]

😂

[@riot._8]

Well the only way for him to give you a red orb is to…yeah

[@bensinj4471]

2:46 these animatioms r just so cute !!!!!!

[@xiguang145]

Wait... So Egyptian wait until next harvest to get the result. I'm pretty damn sure people can tell by their own eyes by then.

[@jihojun2163]

Lol ikr :))

[@igd2108]

wish i could like a comment in phone

[@MsSBVideos]

+Xiguang Li She was exagerating. It takes maybe a week for seeds to sprout.

[@annmiller7312]

like

[@Lucy-rd2bj]

nope she's just fat

[@MissySimpleM]

I really liked learning about the ancient Egyptians' pregnancy test! So cool!

[@Northflowo]

Ancient egyptians were smart What were people in my country doing back them? They were living in houses made out lf sticks and couldn't even talk

[@zuzannaalikowska]

I feel you, mate xD

[@ykosnai8983]

Northflower what the flipotuo fickodk

[@someone-wi4xl]

Northflower geography playes huge rule That’s why civilization started in the Middle East... in the middle of the old world trading with everyone and having access to many seas help in starting a civilization

[@someone-wi4xl]

Northflower geography playes huge rule That’s why civilization started in the Middle East... in the middle of the old world trading with everyone and having access to many seas help in starting a civilization

[@nyssacorreia7110]

I love how the test was called “Prego Presto”

[@groddy_ricky_cita2513]

"Please hurry" in Italian

[@ghiyatsrizky653]

I remembered Insaniquarium XD

[@yuna-vp9fg]

@@ghiyatsrizky653 Presto 😂

[@Deviant_Muffin]

Those tests can be insanely sensitive. I had such a low reading the doctors were astonished I knew I was pregnant 3 weeks in. My cycle was abnormal so I checked. The good news was short lived. I had lost the baby one week after finding out. It is also called a chemical pregnancy that early on (I'm fine now). Still. Dang. Red dye based pregnancy tests work best, btw.

[@hailey740]

I’m so sorry for your loss.

[@Picachki]

So sorry you went through that. I hope it doesn’t stop you from trying. ♥️

[@ArmyofFallenOnesOfficial]

@@hailey740 im not native english speaker but i didnt get it, she doesn't look like she's sorry ,maybe i read it wrong but the last sentece...

[@bintisf]

@@ArmyofFallenOnesOfficial I think it did affect her and she was indeed very sad, but has processed the loss and now can talk about it more freely.

[@ArmyofFallenOnesOfficial]

@@bintisf man ı have stıll the same feeling I hope u are right

[@MrBeiragua]

Those egyptians were full of tricks! I woudn't be surprised if they had wheat cars or something hehehe

[@JaySee5]

Maruk yu kann They had birth control, but used the source so much it went extinct.

[@MrBeiragua]

JaySee5 you're talking about the heart shaped seed? The romans helped to extinct it too, right?

[@videogyar2]

Maruk yu kann 70% reliability is pretty weak. Especially because a random result generator reliability would be 50%.

[@MrBeiragua]

FuranDuron xD that's right! lol

[@MrBeiragua]

Viktor6665 It might be weak, but the fact that it somehow worked is impressive, don't you think?

[@willhelterbrand3785]

so men can use a pregnancy test to see if they have testicular cancer?

[@maggie1000]

Will Helterbrand By the time you get a positive that’ll be baddddd news

[@mariasilveragt1903]

yes. if i knew my guy friends use tests i would say "YOURE PREGNANT WHO THE FATHER" rather than "you have cancer?" 🤣🤣🤣

[@hi-sf6ge]

Mhhmm btw live your pfp XD

[@mahbubmaleksyed5301]

go to the doctor: SMALL BRAIN get a pregnancy test: BIG BRAIN

[@denzmo1139]

That xbox throwback

[@ProjectRomania]

I like how the HGC squirms as the Y bois hold him down while smiling

[@somebody8508]

sorry but it's HCG

[@FATI_SZN]

@@somebody8508 no one asked or cares

[@jadensroblox185]

@@FATI_SZN i do

[@FATI_SZN]

@@somebody8508 no one but JadensRoblox asked or cares

[@itsart4790]

@@FATI_SZN I did .

[@greenbean5812]

03:35 The most shocking day in a man's life 😂😂

[@user-nf2xu4ct8v]

In deeed

[@Subtlxty]

Yk that just means he has testicular cancer right?

[@Phoenixillusion18]

@@Subtlxty Not really , It's true the HCG ensyme is higher on victism of testicualr cancer but erally all men have those ensymes in smaller levels. So a sensitive enough test can show a false positive to all men. It's similar to how a sensitive drug test can show positive after you ate a bagel with poppy seeds because it can sense the very low level of opium.

[@Subtlxty]

@@Phoenixillusion18 yes I know. I should've worded it better.

[@amyche8403]

Omgggg noooooo🤣🤣🤣🤣🤣

[@lev6739]

me: *_i still have my V card but i'm scared to take a pregnancy test._*

[@narruh]

jOhn lEnnOn FORREALL

[@rina5332]

jOhn lEnnOn Can someone explain to meh wut a v card is. Google is no use.

[@RyukiSanzu]

@@rina5332 virginity

[@timcunningham1101]

Sarina Z You’re clearly too young.

[@Jvwvhnny]

Harambe stay in heaven #dicksoutfirharambe

[@stephaniestiller30]

Is it weird I want to purchase the shower curtain at 0:50

[@allysondinh2854]

Gabe Helmy would want to lol

[@maddymaddyval]

my teacher has the exact same shawl

[@superrmrcool]

same lmao

[@xorinzor]

lawl xD

[@divleenshannon5688]

Stephanie Stiller Weed is bad for you. It kills your neurons.

[@bournsted4512]

Oh My God, the animations are sooo hilariously good, I laughed at the cuteness and the way the story is told. ITS THE BEST!!

[@DrDeMoon]

I'm 17 years old, no girlfriend, live with my parents. Why the KZbin recommend this for me ?

[@AndoraAmore]

Why not?

[@nonamenolastname8600]

You are lucky be careful who you sleeping with. If wrong or older women it will get you 4 rest of your life 20year alimony

[@ridhamh2966]

Becoz it can detect cancer.. you can do it too ( i am not joking search it up )

[@SlavicUnionGaming]

Dr.DeMoon I’m 21 years old and am desperate for a girlfriend

[@redbaron827]

What did youtube mean by this

[@Bram06]

0:30 Wow, dem Egyptians... why you so smart?

[@MarkShaneHansen]

Bram06 I'm just wondering if it was random bullshit that happened to have some truth in it or if they experimented with different methods and found this one to be the most reliable. Hmm :p.

[@shafey]

Bram06 We stopped being smart long, long ago.

[@martylovesu]

Bram06 lmao

[@Not-CrypTic]

Bram06 were smart cuz were egyptions

[@mercury6800]

Bram06 aliens

[@TexasAmour]

Fun fact: the urine test you take at the doctor's office is no more specific than the one you take at home. The one that is more specific is the blood test (that's the one that can tell exactly how pregnant you are)

[@kamcorder3585]

There are two types of blood tests: one that detects if there is HCG in the bloodstream, and one that detects how much. The latter can tell you how far along you are.

[@TexasAmour]

@@kamcorder3585 I specified the test I was referring to in my comment :)

[@tashatashianaboodhoo6164]

Ur graphics and the mini stories told....which are basically just the functions of hormones, are amazing....it can literally capture attention people till the very end😂😂 Great job

[@mccabe8818]

Teenage pregnancy - test postitive Teenager - “Well, at least I witnessed the process of the scientific method”

[@lebuuvinhnguyen6103]

This is the first time I have seen a TED - Ed video made by a Vietnamese educator. Now I feel so proud because I'm Vietnamese too. Go, Tien Nguyen, go!

[@Hi-bh8uv]

I’ve seen Tien Nguyen make videos a couple of times and I am Vietnamese as well!

[@NTDLPKen]

Lol i thought he's just a translator for the title. If he did make this video, congratz to him then.

[@davcar94]

Cringed @ 3:46 when the obgyn stuck a bloody needle in her coat pocket.

[@arjunamin9399]

Nice how it can be used as “bloody” as an interjection on “bloody” as a literal needle with blood.

[@darcybrummett7004]

The doctor also drew the blood from the wrong part of the arm.

[@AwfulRocks]

this would be such a good video to watch while waiting for results

[@NanHoumSian]

TED ED is my ever favourite channel on KZbin. I learn a lot of things which I didn't learn from school.

[@hermaeusmora1827]

Well, ectopic pregnancies aren't false positives. They're pregnancies too.

[@kaliwatson3948]

They just got lost

[@AirQuotes]

That's sad

[@ettinakitten5047]

Yeah, they're a pregnancy in the wrong place.

[@anonymouspotato1022]

Deadly ones

[@trevorfranks69]

Heartbreaking

[@rubenaguilar516]

im a male but I'm still watching this

[@teresahomsi6639]

Nothing wrong with that

[@happycloud9848]

I'm a female and its okay for men to watch it, so they can learn lol

[@shibasarecute]

Im...too is a men lol

[@byzantinepepe2478]

Ruben Aguilar same

[@PickAShoe1]

Same here but only because I need to understand this for my GCSEs

[@anitha998]

Well made lesson TED group, as always!

[@valkri3733]

0:20 “woohoo your pregnant!” *immediately gets a 9 month belly*

[@sarathesimmersarathesimmer1300]

Me: " Yeah, I've performed a controlled experiment 😎 " Teacher: " Oh, what was it? " Me: " aha.. pregnancy test " 😂

[@eeshathakoor646]

😂😂😂😂😂😂😂

[@ceroveth9396]

3:34 Why schould a men use a pregnancy test ??

[@vasilijavujanovic1195]

Cero Veth so he can see if he has cancer because pregnancy test can detect it

[@vasilijavujanovic1195]

Vasilija Vujanovic i think only prostate cancer can be detected by it because the hormones are very similar to the hormones of a women that is pregnant

[@ChRiyad]

Cero Veth Imagination

[@Wndrst]

Cero Veth probably bored, or doing it as a joke. not so funny once he googled why it would happen later out of curiosity...

[@1997xander]

+Vasilija Vujanovic No, testicular cancer can be picked up too. But its not a 100% reliable method.

[@moketote4853]

Can we please take a moment to appreciate this sundial watch at 4:14

[@Emily-pf1qx]

why did i watched this whole thing while im being 13 years old omg i never got any likes on my youtube comment 😭 thank u all for the advice though

[@Descension.]

wanna test if it works?:)

[@leonrojo238]

knowledge is powerful

[@reiper]

you might need to do it someday, you never know ¯\_(ツ)_/¯

[@rosestyles8262]

That's a great thing though, you learn alot about human bodies as early as 13! Honestly as your parent I would be proud of you watching informative videos like this. You may not need it today, but it's great information to know, especially when you would need it sometime in the future.

[@rosestyles8262]

@@Descension. that's creepy, you're talking to a 13 year old. What are you gonna test if it works???

[@briannab4037]

I thought that at the beginning of the video she said "The earliest known pregnancy" and im like "wait HOW DID WE REPRODUCE BEFORE- oh its pregnancy TEST, ah ok I'm dumb"

[@kristynab.6539]

Brianna B haha 😂

[@Pedozzi]

0:57 "Honey pass me the gun"

[@lucapeyrefitte6899]

Pedozzi haha omg

[@mitzumiyukian2821]

Pedozzi 😂🤣🤣 LMAOO

[@JBNCATS]

It is so easy to understand more why the second redline apprears, thanks lot

[@latif.khalid]

I do know about all the hormones mentioned and their functions and are quite accurate but never the functioning of kits. Thanks TED-Ed ♥️♥️♥️

[@door-to-doorhentaisalesman2978]

"Mom I'm pregnant." Mom: I'm so proud of you! Your father always wanted a 2nd child. *Sweet Home Alabama*

[@wesleycolaco2460]

Haven't hit show less this fast before.

[@Ghostbat007]

Door-to-Door Hentai Salesman how do I invest in your business.

[@robbins_8468]

@@Ghostbat007 😭🖐

[@knocknockify]

70% accuracy!! I'm impressed!!

[@simonaivancic528]

this video should get some kind of Oscar... so informative, funny, cute, even historic.. thank you

[@InferiorWhaleburg]

3:20 "Hey kid, wanna pregnancy test"

[@isabelwilliams1378]

Thanks for this. This is so informative. I never knew about this. It's really amazing. And a useful video. People must have found it beneficial. Keep sharing such videos.

[@jr52990]

I just watched animated pee... and I learned something. Take that Science .... wait a second.

[@filipinoarchmage5793]

Now I understand how it works. Thanks to the genius animation

[@RayRay-lo2wn]

It’s so nice to understand the mechanism underlying test now as a biochem student

[@--Paws--]

3:37 LOL the animation and the narration

[@xdenricoudx]

I saw that exact test in a history video but I thought it was something very faulty and couldn’t prove pregnancy but after watching this video, I was stunned

[@lindanifusire4721]

Loved the way you explained

[@hannadigamon328]

Ted-Ed answer most of the questions I didn't know I had

[@armystay9017]

I actually never wondered about this till it popped up on my recommendations list lol

[@sammorris4722]

How do pregnancy tests work when one is on the pill?

[@sammorris4722]

Mystik Basilisk I've been told the pill works by producing hormones that tricks the body into thinking it's already pregnant, thus preventing it from releasing an egg to get fertilised.

[@Northflowo]

This is a good question... It is possible to get pregnant even on the pill, it is just far less likely. Hmm.

[@sammorris4722]

Northflower OwO Mystik Basilisk if you take antibiotics while on the pill/implant, it stops it from working. So yes, you can.

[@lexik4603]

+Sara Wolverton The hormone that prevents ovulation isn't the same hormone that creates a positive pregnancy test. When a woman is pregnant, the elevated levels of estrogen in the blood prevent her from ovulation during her pregnancy. In the pill, the synthetic estrogen does the same exact thing (thus the idea of "tricking" your body into thinking it's pregnant and stopping ovulation). but the pill doesn't provide you with HcG, which is the actual hormone that makes a pregnancy test positive. HcG only comes about from the placenta after implantation. So you wouldn't produce a positive pregnancy test just from being on the pill.

[@saimounikasudula1747]

Lexi K We need more answers like this.People like you make Internet very educational

[@netherls7932]

I really love your work, thanks for sharing

[@DreamDaddie]

I hated the wait for the results on both my children. But loved when my wife gave me that look when we got the results.

[@winnieandherbird3105]

I love the cartoons. An the info too!

[@raine187able]

Winnie Loves Life ikrr

[@sophiebird6623]

It's one in the morning and I have a test tomorrow. Yep I should watch this

[@ASMR_Orangely]

*Wow i’ve learnt a lot from this video! Thanks!* 😄

[@jackkelly9048]

Makes sense, thanks for the info!

[@drjones-ph5hv]

this way good info I learned a thing or 2about something I know about but didn't know about.

[@Etvi]

A very nice and informative video. However the use of antibody-enzyme fusion proteins as described in the video is not the case with the vast majority of the home pregnancy tests. Most of the assays rely on gold- or latex nanoparticles to generate the visually detectable signals.

[@millho1742]

I love the illustration in the video

[@PamelaO]

This is the cutest illustration ever

[@silviangeliamaypurba3436]

This video is excellent! It's exactly what the lecturers teach in med school, and public should also know about this

[@poppy-yt7td]

How do people come up with such peculiar ways to know things?

[@doraemon_nobitha]

Love this animation 👌

[@mdfahimulhudarisat31]

1:55 that animation of travelling with Sunglasses on Anzyme😂😂

[@screwalltheads1494]

When I looked at the pineapples I was like PPAP

[@Vader4499]

Pen Pineapple Apple Pen!

[@dan339dan]

I didn't understand well, so I'm watching again

[@someonerandom298]

How bad...

[@ridhamh2966]

@@someonerandom298 shut up

[@Abdullah-cp6eb]

Is it funny I did not get joke hete!

[@kri5h707]

To all the men who don't know why KZbin recommended this video to us. I want to say that it's warning if we've got testicular cancer or not. So please watch it all and use pregnancy test to check if you're positive or not.

[@ProTyle]

Thanks for the heads up! Went and done runned a test, my balls are not spawning more balls so that's good I guess 👍👍

[@cypherpol4313]

These facts are quite interesting ❤️

[@rach101]

1:00 I love this animation

[@amnahs7097]

2:24 I didn't know that period could happen during the pregnancy test stick!

[@flxwsomenovah5519]

crying noodles lol

[@user12231]

Ted-ed videos always tell me things I didn't know I needed till I see the thumbnail

[@learnwithberryafaithfulser5565]

I have noticed that inventions from before were practical, easy to find and zero waste eco friendly materials. Just awesome. 🎉 Hoping they will revive and teach us the ancient secrets . If only the great library weren't burned down, we would have discover more 🌺

[@lovelylck7]

libraries* because most people burnt down universities full of books and scripts about the human sciences

[@marcowulliampopirers2216]

practical? they had a 30% chance to fail

[@jessmurphy2022]

I once had to take a pregnancy test because of my operation I was happening and it came back negative and I wondered how it could work (the pregnancy test)

[@ashkhol]

I keep telling myself “one more video” but then I click on another.

[@1305_NM]

The animations are really cool 😂

[@mohammedal-hammadi5085]

Thank you for your amazing videos

[@freezedriedzombi8242]

I had a friend once who had a pregnancy scare in like freshman year. She was broke but also needed to take it before her parents found out. I gave her 20$, I hope she’s doin well. She was really nice

[@amritagupta1987]

Why are pregnancy tests so expensive in America. Like its just a women trying to see if she got pregnant after a accidental one night stand or wants a child

[@calreeGAZA]

@@amritagupta1987 agreed. Pregnancy tests should be cheap atleast

[@fayyfayyy]

Speaking of pregnancy, my aunt is giving birth in 10 days (December 26 after Christmas the best gift our family could have lol)

[@naughtybritto4845]

Creativity gud concept ...thanq madam

[@daxx81194]

You can literally hear how happy she is when she said the last part.

[@chossuh9058]

it's not pronounced "a-say", it's pronounced "assay".

[@justarandompersonwithaspec5104]

Lol nobody cares grammer boy My man didnt even saw the uploading date of this video XD

[@hoodiehoodie5328]

@@justarandompersonwithaspec5104 that's not a grammar mistake💀

[@riqael]

@@justarandompersonwithaspec5104 bet your special technique is making people laugh hahahaha

[@Sunshine-uv4we]

It's an informative video. I wonder how long does the test kit result last...

[@hoston1471]

*lol I love your animations😂*

[@TheKristyMack]

the animation is so freaking cute haha!

[@So.very.extremely.not.okay.3]

Perfect thing to watch instead of doing homework I have to turn in tomorrow Edit: I ended up missing my bus anyways

[@jisoosdiorbag9513]

Lmao

[@teluguteachers9754]

Which software do you use sir ? ..... Excellent editing....

[@User-qv2qz]

This really did teach me something!

[@rus2938]

why im i watching this xD

[@dansmemory6363]

Am i*

[@dashaunajoseph7491]

Prego Presto lol

[@HarpscityIsHere]

I take a home covid test one time and now these videos are all over my recommended.

[@Wasgud]

I love TED-Ed they make gr8 videos

[@vaibhavupreti1170]

Welcome to another episode of *Where Quarantine has brought me* 😂😂😂