In the chapter "Pastels," Patrick and his friends eat a fancy lunch at the titular restaurant. At one point they encounter another Wall Street banker, Scott Montgomery, with his European girlfriend Nicki, a well-dressed "definite model type" who seemingly does not speak English. She looks idly at Patrick and then down at the tiled floor, which Patrick describes using a simile:
Nicki smiles at me, then looks at the floor—pink, blue, lime green tiles crisscrossing each other in triangular patterns—as if it had some kind of answer, held some sort of clue, offered a coherent reason as to why she was stuck with Montgomery. Idly I wonder if she’s older than him, and then if she’s flirting with me.
Patrick attempts to guess what someone is thinking about him—something that often happens in the novel. The simile, that Nicki looked at the colorful floor "as if it had some kind of answer," shows that Patrick assumes that Nicki actively seeks a way out of her relationship. Patrick assigns quite a bit of agency to the nonverbal Nicki; from only a look at the carpet, Patrick concocts a belief that Nicki is unsatisfied with her life. But as usual for when Patrick meets a woman, he eventually comes to the conclusion that she is flirting with him. The simile, in which Patrick believes that Nicki imagines liberation, quickly moves aside for Patrick's next selfish thought.
In the chapter "Lunch," Patrick has a meal with a colleague named Armstrong who has just returned from a trip to the Bahamas. As Armstrong talks at length about the cuisine he enjoyed on his trip, Patrick has a brief and disgusting vision, which he describes using a simile:
“Good question. As for dining out, the Caribbean has become more attractive as the island cuisine has mixed well with the European culture. Many of the restaurants are owned and managed by Americans, British, French, Italian, even Dutch expatriates …” Mercifully, he pauses, taking a bite out of his brioche, which looks like a sponge drenched in blood—his brioche looks like a big bloody sponge—and he washes it down with a sip from his Corona.
Armstrong's sun-dried tomato brioche, as Patrick seems to suddenly realize, "looks like a sponge drenched in blood." (It seems the brioche has too much sun-dried tomato on it.) Patrick's narration indicates that he subconsciously connects the appearance of the brioche with the bloody sponge—and then repeats it, in italics, to show him realizing with a horrific thrill that he even had the thought. Clearly, the power of this simile is that it shows how familiar he is with bloody sponges. This is one of the first overt indications that Patrick is a gruesome murderer before any actual attacks are seen in the novel. Patrick's first-person narration shows the reader his homicidal habits before they actually occur, through the fleeting connections seemingly made by his subconscious mind.
In the chapter "Killing Dog," immediately after murdering a man and his pet, Patrick goes to D'Agostino's and buys some cereal with a coupon, then runs back out onto Broadway. As Patrick gleefully flees the scene of the crime, he uses two similes to describe his sadistic feelings:
I get a small but incendiary thrill when I walk out of the store, opening the box, stuffing handfuls of the cereal into my mouth, trying to whistle “Hip to Be Square” at the same time, and then I’ve opened my umbrella and I’m running down Broadway, then up Broadway, then down again, screaming like a banshee, my coat open, flying out behind me like some kind of cape.
Patrick screams "like a banshee" while his coat flies behind him "like some kind of cape." Both of these similes are instructive to Patrick's sociopathic state of mind. He emulates the banshee, the Celtic mythical creature that screams to portend death, imagining himself as a morbid supernatural being. But at the same time, imagining wearing a cape, he thinks of himself as some kind of superhero or royalty. These similes show that, after murdering a man and his dog for fun, Patrick thinks of himself as an arcane, terrifying specter of death, but also someone still worthy of admiration.
In the chapter "Paul Owen," in one of the most famous scenes in the book, Patrick attempts to kill the chapter's title character with an axe. Patrick's narration uses a simile to compare the attack to a baseball swing:
I move slowly around the chair until I’m facing him, standing directly in his line of vision, and he’s so drunk he can’t even focus in on the ax, he doesn’t even notice once I’ve raised it high above my head. Or when I change my mind and lower it to my waist, almost holding it as if it’s a baseball bat and I’m about to swing at an oncoming ball, which happens to be Owen’s head.
This scene is the first methodical, planned murder shown in the novel. Patrick describes his movements in terrible detail. The simile, "holding [the axe] as if it's a baseball bat," makes the attack seem disturbingly easy and simple. The comparison to a sport played or watched by many readers turns a brutal murder into a familiar, accessible motion. Patrick himself notes in the final chapter of the novel that baseball is his favorite sport. The reference to baseball is an example of Patrick as the "American psycho," as Ellis intended Bateman to represent American society and culture turned evil. More so, though, this simile shows how trivially Patrick describes murder. To him, killing is merely a repetitive motion—like a baseball swing—that one hones as part of the larger game.
In the chapter "Detective," Donald Kimball interrogates Patrick about the murder of Paul Owen. After the end of their awkward interview, Patrick says that he found the conversation itself "soothing" but the aftermath of it utterly terrifying, which he describes using a series of similes:
There was an odd general lack of urgency to the conversation that I found soothing—nothing happened at all—but when he smiles, hands me his card, leaves, the door closing sounds to me like a billion insects screaming, pounds of bacon sizzling, a vast emptiness. And after he leaves the building (I have Jean buzz Tom at Security to make sure) I call someone recommended by my lawyer, to make sure none of my phones are wiretapped [...]
Immediately after Kimball leaves, Patrick descends into a panic, which feels "like a billion insects screaming, pounds of bacon sizzling, a vast emptiness." This is a common refrain for Patrick: in a conversation he can maintain calm, even if he gets sweaty and shaky; but when he has to deal with the consequences of his actions he loses his cool. The terrible buzzing shows that Patrick's anxiety manifests as an awareness of chaos, the white noise in his brain representing the randomness of life and death. Patrick, increasingly deranged and guilty, finds this randomness to be horrifying.
In the chapter "Detective," Donald Kimball interrogates Patrick about the murder of Paul Owen. Kimball is not a very skilled interrogator, and eventually he and Patrick strike up a relatively normal conversation. Musing about life and death, Kimball uses personification to describe the Earth "swallowing" people:
“It’s just strange,” he agrees, staring out the window, lost. “One day someone’s walking around, going to work, alive, and then …” Kimball stops, fails to complete the sentence. “Nothing,” I sigh, nodding. “People just … disappear,” he says. “The earth just opens up and swallows people,” I say, somewhat sadly, checking my Rolex. “Eerie.” Kimball yawns, stretching. “Really eerie.”
Both detective and subject agree here that "the earth just opens up and swallows people." In other words, Patrick and Kimball both think that death, even murder, is not really the fault of other people, because the Earth just sometimes makes people "disappear." The personification makes this especially powerful: Patrick's phrasing proposes that the Earth actively chooses which people live and die, which implicitly would exonerate anyone who killed Paul Owen.
This personification of the Earth plays off of a simile later in the chapter, in which Patrick compares himself to an astronaut:
Moving him toward the door, my legs wobbly, astronaut-like, leading him out of the office, though I’m empty, devoid of feeling, I still sense—without deluding myself—that I’ve accomplished something and then, anticlimactically, we talk for a few minutes more about razor-burn balms and tattersall shirts.
Patrick is so anxious, drugged, and scared that he can hardly stand up, as if feeling the effects of low gravity like an astronaut. In comparing himself to an astronaut, Patrick describes his jittery feeling as something like being in space—as being separated from the Earth. But despite his fearful reaction, Patrick knows that he has "accomplished something": Kimball concluded that Patrick was innocent after their interrogation. In the context of the personification of the Earth earlier in the chapter, Patrick's astronaut legs imply that, having been found innocent, he feels separated from the consequences of life and death.
In the chapter "Summer," Patrick and Evelyn agree to take a vacation to the Hamptons. Patrick uses an obscure simile to describe Evelyn's reaction to his suggestion:
My nightly bloodlust overflowed into my days and I had to leave the city. My mask of sanity was a victim of impending slippage. This was the bone season for me and I needed a vacation. I needed to go to the Hamptons.
I suggested this to Evelyn and, like a spider, she accepted.
Evelyn accepts "like a spider"—what does Patrick mean by this? Patrick says that he is in a "stupor" earlier in this chapter, which certainly comes through here: it is not at all clear what Patrick means in comparing Evelyn to a spider. Patrick does not discuss spiders anywhere else in the book, and for all of Patrick's anxieties and irregular behaviors, he never shows any particular aversion or affection to bugs. (Certainly one can imagine there are not many bugs in Patrick's sterile, high-rise apartment.)
Patrick might be implying that he is some kind of prey caught in a web, the fly to Evelyn's spider, that she is somehow trapping him in the trip to the Hamptons. But Patrick is the one that suggests the trip to her, and anyway, this feeling would be totally incongruous with Patrick's usual controlling feelings toward Evelyn and toward women in general. Perhaps the best interpretation is that Patrick is simply entirely deranged in this moment: his "mask of sanity" has slipped so much that he can no longer narrate the book coherently. At this point in the novel, Patrick's mental state has bled into the prose, this simile representing Patrick's inability to accurately interpret his surroundings.
In the second chapter titled "Girls," Patrick reunites with a sex worker whom he calls "Christie." Last time they met, Christie left with what Patrick described as "a terrible black eye and deep scratches across her buttocks caused by the coat hanger." Christie is understandably scared to be going home with him again, but Patrick convinces her with alcohol and money, which he describes in a simile:
In the ride back toward Nell’s Christie had admitted that she was still upset about the last time we shared together, and that she had major reservations about tonight, but the money I’ve offered is simply too good to pass up and I promised her that nothing like last time will be repeated. Though she was still scared, a few shots of vodka in the back of the limo along with the money I’d given her so far, over sixteen hundred dollars, relaxed her like a tranquilizer.
"A few shots of Vodka," along with a lot of money, relaxes Christie "like a tranquilizer." Patrick is addicted to tranquilizers, especially Xanax, so he uses this simile from personal experience. He is trying to recreate his own dubious sense of calm in Christie through different means. The simile also clarifies the kind of relaxation that Patrick wants from Christie. He doesn't want her to be relaxed as if she were in a safe place where she is comfortable; instead, he wants her relaxed as if she were on a tranquilizer, unaware, vulnerable, and open to persuasion.
When Patrick unexpectedly encounters Luis Carruthers, a closeted gay man with a hopeless crush on Patrick, he describes Luis's sudden appearance using a simile:
Like a smash cut from a horror movie—a jump zoom—Luis Carruthers appears, suddenly, without warning, from behind his column, slinking and jumping at the same time, if that’s possible. I smile at the salesgirl, then awkwardly move away from him and over to a display case of suspenders, in dire need of a Xanax, a Valium, a Halcion, a Frozfruit, anything.
Luis sneaks up on Patrick "like a smash cut," referring to the film-editing technique of using an unexpected cut, to an unexpected subject, for dramatic or sometimes comedic effect. (A famous example of a smash cut is the moment in The Shining when Danny looks down an empty hallway, which suddenly fills with blood pouring from the elevator.) A "jump zoom," a much less common term, is essentially the same thing, with a sudden zoom instead of a cut.
Patrick uses the term to describe how shocked he is at Luis's sudden appearance. This is one of a series of similes near the end of the novel in which Patrick becomes increasingly convinced that his life is "like a movie." This filmic delusion allows him to further separate himself—and the reader—from his actions. He comes to think that the people around him are only characters, and that the events of his life are not real. Still, though, Luis's appearance clearly frustrates Patrick immensely, and he desperately craves drugs to calm down. There is a tension between Patrick's belief that the events around him are fictitious and the unavoidable bodily truth of Patrick's feelings of panic and addiction. This tension, between Patrick's perception and sensation, will be the primary conflict for the remainder of the book.
In the chapter "Chase, Manhattan," Patrick flees in absurd fashion from the police. During this chapter, it seems increasingly likely that the events of the narrative are not really happening and are only the product of (or at least heavily embellished by) Patrick's imagination. In the middle of the chapter, the narration abruptly switches to third person, just as "Patrick" drives a stolen cop car into the Lotus Blossom, a bar. In this unexpected passage, "Patrick" fights hand-to-hand with a police officer and uses a simile to describe his out-of-body experience:
[...] no one helping the cop as the two men lie struggling on the sidewalk, the cop wheezing from exertion on top of Patrick, trying to wrestle the magnum from his grasp, but Patrick feels infected, like gasoline is coursing through his veins instead of blood [...]
Patrick gets tackled and his adrenaline feels "like gasoline is coursing through his veins instead of blood." The third-person narration shows increasingly unbelievable events as Patrick separates himself from his own actions in some kind of wild hallucination. Here, through the gasoline in his veins, he imagines himself as some kind of machine, free from bodily danger. He describes this feeling as an "infection," something that Patrick would usually hate, with his extreme health anxiety. But, separated by the third-person narration, his body becomes increasingly like an automaton. In this moment, Patrick is so infected by drugs and rage that he becomes untethered from reality, untethered even from first-person existence, living in a body that runs on gasoline.