* The description of how he cuts a prostitute in half just above her vagina [[ChainsawGood with a chainsaw]] and she retains consciousness just long enough to watch him pull her legs away from her upper body.
* Patrick performs rat torture on a kidnapped woman by [[spoiler:cutting open her vagina enough to fit a plastic tube into and forcing a rat to crawl into her vagina. He removes the tube, staples her labia together, then watches as the rat eats the restrained woman from the inside out...]] The scene, in the novel, is unfilmable for the movie.
* Some of the murder descriptions in the book are absolutely chilling, especially the deaths of Sabrina and Christy.
* His description of himself near the end of the book and which also concluded the movie:
-->"There is an idea of a Patrick Bateman, some kind of abstraction, but there is no real me, only an entity, something illusory, and though I can hide my cold gaze and you can shake my hand and feel flesh gripping yours and maybe you can even sense our lifestyles are comparable: ''I simply am not there.'' It is hard for me to make sense on any given level. Myself is fabricated, an aberration. I am a noncontingent human being. My personality is sketchy, and unformed, my heartlessness goes deep and is persistent. My consciousness, my pity, my hopes disappeared a long time ago (probably at Harvard) if they ever existed. There are no more barriers to cross. All I have in common with the uncontrollable and the insane, the vicious and the evil, all the mayhem I have caused and my utter indifference toward it, I have now surpassed. I still, though, hold on to one single bleak truth: no one is safe, nothing is redeemed. Yet I am blameless. Each model of human behavior must be assumed to have some validity. [[WhatIsEvil Is evil something you are? Or is it something you do?]] My pain is constant and sharp and I do not hope for a better world for anyone. In fact, I want my pain to be inflicted on others. I want no one to escape. But even after admitting this - and I have, countless times, in just about every act I've committed - and coming face-to-face with these truths, there is no catharsis. I gain no deeper knowledge about myself, no new understanding can be extracted from my telling. There has been no reason for me to tell you any of this. This confession has meant ''nothing''."
** One interpretation of this is that Bateman has conveyed the entire story of the novel through the act of brutally murdering the reader. "But even after admitting this - and I have, countless times, in just about every act I've committed..."