Why is this the #1 video on youtube?

Close to 90 million views!
One comment said, "Tired of being sexy" (which could explain why it's appealing) and another said, "I love this song". Some other people are suspecting a hack. Or is it an avalanche of people sharing it (out of surprise that it's got so many views) and other people viewing it out of curiosity? Do people have to like a video for it to be #1?

It beat this other video, which had 77 million views. It's impressive, though.



I don't think I understand the mechanics of viral videos yet.

Here's someone else's take on it:
http://www.waxy.org/archive/2008/03/05/new_vide.shtml

I like this one: