This would also help add even more strength to my vibrating suitcase theory below. He is shown reading and exercising while the house is literally being destroyed and falling on his head. In the scene where the narrator first punches Tyler, Edward Norton was supposed to fake hit Brad Pitt. She didn't hold the agreement, though: Jack Becomes Marla In the Laundromat In the laundromat scene we watch Marla take control over Jack, becoming his primary alternate personality. Infectious Human Waste Everyone remembers how Tyler Durden makes his soap — stolen fat from the liposuction clinic. He was transitioning back into Marla and turning off his masculine persona. But it goes deeper and helps explain why Marla and other characters are not real. If Jack believes that this is where Marla stays, yet he is Marla, then this is a clever way of communicating to the viewer that Jack is leaving his manhood at the door when he arrives and takes on the role of Marla. However, the director took Norton aside and secretly instructed him to deliver a real punch — prompting an equally real reaction from Pitt. Is that an accurate description of our relationship Ty ler? Brad Pitt was keen for his parents not to see the film, but they insisted. You show me a sensitive side, then you turn into a total asshole. When he returned to work the next day with a bruised face, nobody asked him what had happened and instead pretended not to notice. However, if Jack is actually Marla, then Marla is likely the one who packed his bags. After beefing up for his role as a neo-Nazi in American History X, Edward Norton then had to lose almost 20lbs for his role as the narrator, as he believed his character was "wasting away, falling apart. How on Earth could this be possible..?