"Don´t play it ever again, stop it!" We love you Nick!

"thats not a boyband, thats my brother'" hahaha so cute!!!

They just made What Makes You Beautiful ten times better

how they sing one direction better than one direction im dead

I laughed so hard at Nick's reaction when "Oh Aaron" was played 😂

"Don't play that ever again, no, STOP IT!", poor Nickolas Gene Carter, I'm sorry :(.

"That's not a boyband, that's my brother!"

"Don't play it ever again! Stop it! No!" :D LOL :D Nick, oh, Nick I love you.

AJ dancing during Nsync is the funniest thing I've seen

"That's not a boyband, that's my brother!" Uhh,,, Nick is SUPER CUTE!

Nick stopped dancing when he realized what song it was lmao

They totally slayed the 1D song

nick is just like " NO NO NO THE HORROR NO NO NO STOP IT ITS AWKWARD NO NO NO STOP IT"

lmao this is so hilarious. And brian making fun of Nick at the end😂😂

I love how at 3:11 Kevin is like pointing to the music and saying 'that's J.C'

I'm so glad i've found this video. Nick's reaction while OH AARON is playing is so funny. HAHA

I'm crying at AJ just vibing to Aaron carter 🤣 and respect that Kevin said it's JC and not *NSYNC

nick feels awkward when he heard aaron's song.. hahaha... but nick looks so cuuuuuteeeeeeeeee!!!!! he never changed,, still got the boy next door looks. KTBSPA!!!

BSB singing One Direction... Life complete xD

Hahaha! Never knew Nick is embarrassed by Oh Aaron. I use to play that song over and over again when it was new. lol

3:11 AJ did the step of nsync's 'I want you back' love it 😄

nick started dancing to aaron's song before he realized who it was Lol

3:45 STOP IT!! - nick LOL

After so many years of listening to their beautiful voices, I can't believe I am still blown away every single time they make any song sound so perfect. I can't be the only one who noticed how they sang "What Makes You Beautiful" a million times better than One Direction did. Not to mention, they didn't even practice that. Their harmonizing completely surpassed One Direction's and I even searched acapella or acoustic versions One Direction did of their own song (just to make sure I wasn't biased) and the Boys did it so much better.

brian is so funny lol and aj danceing is so silly, nick is a tirp! lol i love these guys (:

Brian is so energetic lol

AJ is so into this game! Love it

I died when they played Aaron carter hahahahahhaah

OMG, they are HILARIOUS - aside of music, they must be so much fun to be around with!!

I bet it would be so much fun on tour with these guys. Especially with Nick and Aj. At least they all have great sense of humors.

Oh Oreo...what's in the middle...THE WHITE STUFF!!! LOL Love these guys!!!

😂😂😂 the guys dancing to Aaron!!

Hahahahahahahaha I love you Nick!! Stoped!!! hahahhha

I loved their reactions to the NSync song. Kev pointing his finger "That's JC", Nick and especially AJ dancing and the best reaction is Brian "Oh come on. For real?"

lmao brian "ohh my mascara's running" HAHA

They're hilarious as always! 💖💖💖💖💖💖💖💖love them!

LOL Come on now Nick, we all know that was you rapping, don't try to say it was your brother! ;)

BSB should teach 1D how to sing 1D song haha

When they started playing Aaron carter that was priceless!!!

BSB singing One Direction song... hah!!! nailed it!!! making it ten times more beautiful.... Bryan's reaction hearing N'sync song... "Oh come on! For real!!!???"... and Nick Carter realizing Aaron Carter song... that was hilarious... so love my all time fave group... and still in love with #nickolasgene... BSB RULES FOREVER!!!!!

AJ's I want you back dance is hilarious @3:22

Nick is sooooo cute 😂😂

backstreet boys love❤❤❤❤

I Love you Nick Carter

I love Nicks face at 3:44 so cute♥

So sweet they gave a shout out to Rich from LFO. RIP Rich! ❤🙏

one of the best video i have seen

so funny!!!! BSB never change... so lovable and adorable...

this is the most funniest thing i've seen in my life, the backstreet boys are soooooo hillarious!! love you guys : ) XOXO

I like how Brian sang "The Right Stuff" as Michael McDonald at 1:50

Love Nick

one off the best bands in the world

I'm crying right now... it's too funny the last part...I liked when AJ sang WHEN THE LIGTHS GO OUT BY 5IVE... They should've put a 5ive's song... maybe the guys could sing it... but it was hilarious...

3:33- That moment when he realized. lmao so cute nick!

the interviewer dancing and brian making weird squaking noises lol i've been laughing for ten minutes

Yes Nick. You are rapping on that one 😂 Don't lie

"The white stuff"😂😂😂😂

4:07....oh my lord, Brian. Why are you like that? LOL It's great to know he's still the same.

I keep laughing the whole time lol its just so cute 😍😄

2:25 OMG theyre singing One Direction *screams*, 3:08 *NSYNC REALLY???, and 3:30 Nick finding out that was his brother LMFAO

The fact that they guys had never heard Oh Aaron is GOLD

Omg What's Make tyou Beautiful

3:33 the physical embodiment of the word "cringe"

Thanks for that LFO hommage :) RIP

the 2:25 part, they totally slay that WMYB

2:31 Howie is like "im not feeling this at all"

i love rock music, but i grow up with them, an i still love them, they are so funny :)

"That sound like a new Fresh Prince" lol

Oh my - extra points to Howie for referencing Michael McDonald and Brian for (sort of lol) singing a bit of Sweet Freedom :)

Nick's face is like wtf

lmaooo nick that was totally you rapping don't lie

Brian littrell is so very funny!!!!!!!!. i love you Brian so very much!!!!!!!.

Jajaja no es por nada, pero la canción de 1D se escuchó mejor en las voces de mis boys y eso que estaban bromeando nada más jajajja son únicos. BSB FOREVER!

They really know their music. They surprise me. Haha. Especially when they got the 'nsync part. Haha. They love Nsync, like we all do. See, there was no real drama with our fave lads, just a fan on fan rivalry! LMAO!

They sang 1 Direction better than One Direction!!

Loved this!

Brian: it sounded like the new fresh beat band!! hahahaha hilarious! he knows who they are!! =P

1:29 Has to be my favorite I could stop laughing 🤣🤣🤣🤣🤣🤣🤣

Watching this now knowing that Aaron is gone hurts so much but we know that Nick loved his brother more than anything. BTW I can't believe this is the first time the rest of the Backstreet Boys heard the Oh Aaron song

2:32 imagine if "What Makes You Beautiful" is really their song. Here it is. Lol.

No madder how many times I listen to this I still laugh

I love Brian! Haha

nick is literally so adorable

WOW... Brian doind that beatbox 4:31 - 4:38, AMAZING

Lovely guys

jajajaja los amoooo

that's my brother nicks reaction

this is literally the cutest thing ever my god

I've your music from the very first time i heard INBYH on TRL. everyone

Lol!!! They're crazy! Love them! :-)

Should have played BTR!! BSB and BTR will forever be my favorites❤❤

Why didnt the host let them finish singing the last sentence of 1D song? So the world can see it better, that they slaaayeeed the song!

i

Brian is so Hyper lmao

I wish that BSB and NSYNC would have an epic concert together, it would be great :)

Awww they played Calculus. Miss you, Michael!

Notice the reflex they made when singing that 1D s song. No sopran and howie sing the bass part. W.O.W

2:46 Perfection!

AJ is the best dancer 😂

yea ive seen that but i hoped to find it in a better quality it was so awesome when i watched it on ustream!