american psycho

When someone discovers this book, and manages to get past the relatively slow beginning, delight can be had from reading the filthiest passages (in particular, the famous rodent/vagina incident) to the more shy children. They will generally leave the room by the time he's sliced off the nipples and fucked the decapitated skull.
(Editor's note : Avoid the chapters which go into an in-depth appraisal of the careers of Whitney Houston and Genesis. They will generally not shock.)