I think in this day and age, we kind of expect pop music performers to lip synch when performing in certain venues. Not that I agree with it, but it's a bit difficult to sing live and autotune. Not to mention, the dance routines.

But the question is illness, food poisoning, alcohol, or drugs?

Kudos to the dancer that kept going though. I mean it's pretty tough to see someone vomit and not vomit yourself, but it takes a pro to stick to the routine and not do it.

This may give a totally new meaning to Bieberfever.

Proof that his music is sickening!

I don't take the merit away from this kid, despite all the hate, he is well into the pop scene and his agents do a great job at keeping him busy with new stuff.

But I beg to know, how in hell is he so famous. There hundreds of other kids singing pop too, why this one ?

He has a video on youtube with over 700 Million views and the song is just your average pop teenager song like any other else.

What an inspiration. Even after he puked, he soldiered on to give his fans a show. I love you JB! #belieber4life

I laughed my ass off to this.

What a talented young man!

He finally got sick of his own music.