Hangover- Genius or Mindfuck?

I bet you guys have already seen it but I have to write about it too. I don't know if I should like it or not. When I first watched it I was hangover and it kind of expressed my feelings but after I watched it being fine, it was weird. It is weird. It's mindfuck, actually.

This song is either genius, either very stupid. I'm still a little confused.