- Half-Assed Zombie (Trick-or-Treater): [to Lyle] Hey, can I get another one?
- Lyle Menendez: What the fuck you talking about? Those are king-size Snickers. You know how generous that is?
- Half-Assed Zombie (Trick-or-Treater): Jeez. I'm just asking.
- Lyle Menendez: Motherfucker! How about you go back to fucking Van Nuys, you poor fucking piece of shit?
- Half-Assed Zombie (Trick-or-Treater): Yeah? Fuck you!
- Lyle Menendez: Fuck you! And nice, cheap-ass costume, you pussy! Fucking kids.
- Lyle Menendez: [as he and Erik attempt to purchase guns] Fuck that! That is illegal! I'm an American citizen. An American citizen has certain rights. It's in the Constitution!
- Dr. Jerome Oziel: Lyle, tell me what is in your pocket.
- Lyle Menendez: It's a fucking king-size Snickers, okay? I just gave away 300 of these at our house. Kids love our place. We're good people.
- Lyle Menendez: [to a trick-or-treater] How about you get the fuck off my property before I shove that fucking Snickers bar all the way up your ass, cowboy?
- Lyle Menendez: If Dad was our foundation, well, Mom, you were the wallpaper and the beautiful furnishings.
- Erik Menendez: I'm having these nightmares and I can't sleep, and I'm living in a house that I shot my parents in. And I can't sleep. And every night, it's a nightmare. And every night I'm in that house, it's this nightmare where I'm shooting them and they just don't die. And they don't stop. The only way they stop is when I shoot myself. That's when I can sleep is when I blow my own head off.
- Yoda (Trick-or-Treater): [to Lyle] What are you dressed as?
- Lyle Menendez: What? I'm Tom Cruise! From "Cocktail".
- [under his breath]
- Lyle Menendez: Duh. Fucking iconic.
- Lyle Menendez: [to the press] Hey, where's your camera? Mafia, after what we've been through, I'd like to see you try.
- Lyle Menendez: [as he is driving his car] Come on! Come on! Come on! Come on! Fuck! Motherfuck! Go! Go forward!