Even if this weren't one of the funniest things I've seen in a while it would still get a 5 just for being something American that's made LESS nauseating by the Japanese pop culture machine.
This song was funny enough in its original form before the Japanese got through with it.
It amazes me how the audience seems genuinely in awe of this, rather than laughing their asses off. I mean, I grew up there, and I still don't understand that crazy culture one bit.