The most unhinged/funny book you’ve ever read

I’m desperately on the hunt for a weird, unhinged, genuinely funny book; something that will make me laugh out loud and go “WTF.” I want an unrelatable main character who I won’t be able to stop thinking about.

I recently read Big Swiss, My Year of Rest and Relaxation, and Murder Bimbo, but none of them quite hit that mark for me.