Strangely, that's not the most horrifying part ...

The Scene From The Book:

The single most fucked-up part of the book that didn't make it to the cinema comes when Renton attends his brother's wake at his parents' house. His brother just died doing a tour of duty in Belfast, and has left behind a very pregnant, very messed-up widow. So Renton does the gentlemanly thing and ... well:

Harvill Secker

Yeah, so ridiculous dialect aside, we have our main protagonist porking his dead brother's pregnant widow at his dead brother's wake, all the while wondering whether or not it counts as a threesome since there's a baby in there. Dr. Suess couldn't even make that sound funny. Well maybe. Maybe he'd say something like "One inch, two inch, red inch, blue balls. This one's in a dead bro's wife, this one's going to be causing strife." Nah, he wouldn't say that.

Anyway, if the sister-poking wasn't enough, Renton's just come off a week of being wasted and isn't exactly hygienic:

Harvill Secker
Who else is suddenly hungry for cheese?

At this point, we're probably all thinking that maybe it shouldn't have been on the Booker shortlist after all.

The story is bleak as fuck. We learn that cows are extinct, which means no more In-N-Out burger, which means why even be alive? There was also some kind of firestorm, and everything is worse than Detroit. Most importantly for our heroes, gangs of dangerous men roam the landscape looking for survivors. Not to steal their weapons or rape their women, but to kill, cook, and eat them, because in a land without beef, man-cow is grade-A good.

In the film, we never actually see people being eaten, though we do follow the characters as they stumble onto a cellar full of ready-made human meals, and we meet one of the bad guys up close and personal before he becomes a main course for his besties.

The Weinstein Company
They ate Sarah McLachlan before she could write a song PSA about these guys.

The Scene From The Book:

However miserable the film might be, there's a scene in the book that is so fucked up and destroys all hope so thoroughly that the director/screenwriter obviously thought, "Fuck that -- let's just kill off a mother and child instead."

When the father and son see a fire in the woods, they head toward it, in what is known classically as the "What are you, stupid?" maneuver. What they discover is not marshmallows on a campfire:

Alfred A. Knopf

Yep, spit roast baby corpse for dinner. Just like ma used to make!

Thing is, Tyler has started an army -- all the Fight Club regulars join what he calls Project Mayhem, who kick society in the balls at every opportunity. Or at least threaten to cut them off.

20th Century Fox
"Rule #1: Don't fuck with us. Rule #2: Don't talk about fucking with us. That's what slashfic is for."

Fight Club is, by necessity, a violent film. Not surprising, really, given its title and the fact that the majority of the characters spend the majority of the story beating the crap out of one another (or themselves). There's a car crash, a plane crash, and Bob's bitch tits.

20th Century Fox
Meatloaves.

But there was still stuff too intense for the movie ...

The Scene From The Book:

It's no secret that the film is different from the book. This is something the author himself is very happy about. That said, there's a scene toward the end that they had to cut for the sake of taste (keeping in mind that Bob and his bitch tits get shot in the head at one point).

After learning that he and Tyler are one and the same, the Narrator signs up for all 50 fights at Fight Club in a single night, and gets beaten so badly that this happens:

W. W. Norton & Company

A severed tongue with broken teeth sticking out of it? Nice. There's probably some symbolism in there somewhere, but gross.

In the movie, we end with the Narrator and Marla Singer watching Project Mayhem bring their city's financial district back to Earth, with a single frame of pornography thrown in for good measure.

20th Century Fox
Right after the buildings do their impression of porn stars whose Viagra just wore off.

But at the end of the book, the Narrator is left mute and powerless in an asylum because his tongue is rotting in a sweaty basement somewhere, along with his sanity and any hope we may have had for the future of humanity.