Nooma Dance Boy

So Megan showed me this link of this kid dancing to a fun song. She thinks its funny, as do others at work I've shown it to. I may be boring, but I don't find it as hilarious as everyone else does. This is something that I always do at home, in my car, and even in my cubicle at work (where everyone laughs at me). Why is it uber-funny that a nerdy fat kid does it?