What the hell is wrong with all of the youtube commenters? Lol. They are saying stuff like "I am sorry but I am a kid and I can do better than that."
... uhhhh the kids in the video are around 5-7 years old. They are just having fun.
Seriously. That's youtube for you.
On another note, that last line made me laugh. My first reaction was, "damn, I fell for it..."