Science Experiments Gone Wrong 

JJ: “omg poor girl :(“ Also JJ: *replays the clip multiple times*

The Nigerian brotherhood is back 🔥😂

Little girl: accidentally blinds herself Sidemen: hehehehehe... play it back

"Aaagh it's so big" Ethan: chuckle Toby: chuckle JJ: chuckle "Goddammit jack"lmaoooo

12 minutes of Ethan laughing, Tobi feeling sorry and jj feeling annoyed at people

Everyone: “School Nurse” Ethan : “Doctor’s office”

7:39 „hmm“ „hehe“ „haha“ No man can resist this sentence

9:31 The boy is saying “Man, my ears are gone” in Malayalam which is a South Indian language.

10:12 Ethan: "that is my arse after...." KSI: "an Indian"

JJ Tobi and Ethan: poor girl Also JJ Tobi and Ethan: laughing at her getting vinegar in her eyes

Ethan: “People are so stupid man.” Also Ethan: “What does a cow drink? MILK!!”

Ethan`s mom trying to explain where his dad went: 8:39

Claim your ticket when the title is just called “Science Fails”

“Science Fails” Yes, yes it does.

I love how they’re describing the scene where the water jug knocks an old woman out, and then they make the edit where Harry kicks the jug and breaks her mom’s jaw.

Normal Ethan: “THE LIST IS F***ED!” Science Ethan: “THE EXPERIMENT’S F***ED!”

Imagine 3 grown dons in their bedroom laughing at a little girl falling over and crying cuz she’s got vinegar in her eyes 🤦🏼‍♂️😂😂

Ethan,Tobi,JJ *laughing* literally five children who lost there eye sight: “am i a joke to you”

9:18 chevi poyada😂😂😂😂😂😂

9:40 the way Jj's face smiles and instantly gets shocked

“Science fails” My birth.

These daily uploads from the Sidemen are helping me not stay bored in class.Thank you Sidemen,I appreciate it.

10:53 electro book a goof bro 😂

Alternative Title: Sidemen Laugh at Little Kids Hurting Themselves

Like Tobi once said: “experiments are stricty for the science lab”

I can’t be the only one pissed off when they didn’t play the full “My eyeesssss” clip. The next bit is even funnier

Honestly your videos help me so much, I’m in such a bad situation and seeing the videos you post allows me to laugh and there’s really nothing else I can say. Thank you for the constant upload❤️

Just watching Ethan start laughing makes my day.

I can imagine JJ with a kid when his kids brakes his arm badly and JJ is just there laughing at his poor child.😂

Jj and tobi :- Oh...no Ethan :- HahAhAhahAh

Perfect group for this. Them laughing at a girl with vinegar in her eyes made me die💀😭😂

“My eyes” 😂 my favorite one out of all of them

I am quite disappointed that Deji and his coke bottle experiment isn’t in here

11:29 and that’s how he became the hulk

Ethan doing science experiments is SUCH a throwback

9:13 malayali gang

11:06 JJs face turns from laughing to serious real quick 😂

I’ve not escaped the kids giving me virtual hugs , one day

4:36 old KSI is back

11:16 leaked footage of Dr. Herbert West trying to perfect his Re-Animating juice!

11:00 We need sidemen react to electroboom

Petition for Harry’s Uncensored moments

This video is maybe the biggest advert for standard lab safety I've ever seen: -always wear eye protection -always work in a safe and clean space -always know what chemicals you are working with -always have safety equipment such as a fire extinguisher on stand-by

I swear yall make it even funnier almost laughed the whole video 🤣🤣

10:13 "That my ass after an Indian" damn vik is really taking bullying to a new stage

They should react to ‘Electroboom fails compilation’ if they found the clip of him funny in this video (10:37)

Pleeaseee You guys have to do a part two of this LOL🤣🤣

This has to be my fav sidemen channel and it’s the third one!! 🔥 🔥 🔥

My life was never the same when someone explained to me that the guy who always shocks himself using electricity is smart enough to make it so that you just get a shock and not die.

9:31 shout out to all my Malayali (Indian) brothers for making it into a sidemen video;)

They should just react to a full electro boom compilation 😂

I genuinely could not stop laughing at this! These were the right three for this type of video lol 😂

Laughing looking at teens falling little girl fails JJ: Reeelooaadd eettt. me: its true, we like seeing kids in pain XD

just taking a moment to appreciate how much entertainment the sidemen continue to give us on a daily basis, thanks for all the laughs lads

Gotta love 2 CrazyRussianHacker clips back to back

They cut out the best part of the little girl with the vinegar 😂 she goes “owww my eyes, it burns” 😂😂😂 love that video

1:20 jj’s reaction was priceless

#ElectroBoom bringing educational joy to even the sidemen , got to give that man kudos dude

That "nope!" was hilarious and adorable.

Elephants toothpaste (the yellow fluffy foam shit) is actually super dangerous when it’s first created because the reaction superheats it it about 182 degrees (that’s about 360 degrees Fahrenheit for the Americans)

9:30 Mallu in the building 😂

3:39 I feel so bad for laughing but the “MY EYES” got me and now I can’t stop laughing.

10:55 this guy is elite because his whole channel is him purposely hurting himself

Every Tobi's laugh really intimidates me

JJ and Ethan are the best on this channel! They bring so much to Sidemen Reacts! Tobi's laugh is everything too!

little girl: gets vinegar in her eyes JJ, ethan and tobi: *Laughs*

9:42 jj lagged in real life

Keep up the great video lads

oh a little girl falls down and gets some bleach-like liquid spilled on her eyes, not only that but she also screams AHAHAH THATS JOKES

Who was here when the video was called "Science Fails"

Gone wrong reactions are some of the best we get from the boys

7:25 JJ doesn't have hair, why would he be affected 🤣🤣

This should be the group that reacts to “Nigerian stuffs.”

"Chevi poyada" Any mallus?

It's The Way Ethan Says Just Get A Barbecue Bro For Me.

1:19 JJ: 😱 Tobi: 😱 Ethan: 😂

Ethan's "DJ spin that shit" is a tradition now for every Sidemen reacts 😂

Any mallus heard “chevi poyada” lmao 😂

the little girl w the volcano, they left out the best part!! she says “my eyes… it burns!!” 🤣

That edit with harrys mom and the water jug was jokes

That guy jumping off the roof with the umbrella is Harry's spirit animal. 100% something he would do

I need a whole ass series of this 😂😂

that vid made me laugh harder than any sidemen reacts vid

Ethan enjoys every painful fail

5:49 Ethan: ‘ Humans are stupid’, Also Ethan: ‘Cows drink milk’.

How on earth did I get in when I was like one second after the video was uploaded

KSI & Sidemen videos really helps with my depression..🙏🏻 Thankyou so much sidemen for the weekly uploads.. It really helps. 🐐 🔥

The outro is just getting better

“Roses are red” “Violets are blue” “If it’s less than a minute” “I’ll give it a view”

Poor girl why'd they keep laughing and rewinding

Greatest trio alive

I love this lineup

"science fails" -coronavirus

2:18 I guess that was nuts

A sidemen science experiments would be a perfect sidemen Sunday lmao

Why is JJ’s laugh so Infectious 😂😂😂

Damn I’d watch this video again even if I haven’t finished it

8:32 white was not the imposter

you guys should react to russel peters, feels like harry and jj would love his jokes

"God damn it Jack" 😂😂😂 you know damn well my mans has been saying that his whole life