Don't worry, dude...
You know, everyone on here bitches about how sick some of this is. But oh, well. Things like Neurotically Yours and Retarded Animal Babies are just as twisted. People just like to get offended by stuff that they've thought about, too.
Hell, I'll admit, I always had daydreams like that in high school. And taking out those aggressions in a fantasy setting kept me from doing it in real life.
Personally, I thought it was a good movie. Good concept, good musical choices.