This is brilliant! 
OMG that was great!
That was pretty amusing
My favorte video for summing up Justin Bieber was this one http://www.youtube.com/watch?v=W_cGo0q7krk
THAT made me laugh. The video in the OP was simply too long and too repetitive, altho I did think the use of the tune was clever. Clever, alas, is meant for things that are quick and that video wasn’t.