Tropfest, or Eat Carpet, or both. I mean it as a good thing, yes.
. (I'm thinking of a
very short film I saw on Eat Carpet once. It ends with something like "Well, you shouldn't have put me in the bin". Ha...you probably had to be there, but it reminds me of your book).
American Psycho isn't funny in quite that way. Its (the book's) humour is satirically black and ultra-cynically, quintessentially (post-) 80's...sort of like a
Fear and Loathing in Las Vegas for the/us
Miami Vice generation, where you might occasionally laugh, but mostly you shudder and kind of want to scrub your soul a little, or a lot. Dark-dark.
I'm not recommending it, but I'm not trying to dissuade you either (I've thus recommended it while absolving myself of the recommendation
).
Cheers,
Marc