Fogell unveils his brand-new fake ID to Seth and Evan, on which he claims he's a 25-year-old Hawaiian named... McLovin.
Evan: It's up to you, Fogell. This guy is either gonna think "Here's another kid with a fake ID", or "Here's McLovin, the 25-year-old Hawaiian organ donor". So what's it gonna be? Fogell: ...I am McLovin. Seth: No, you're not! No one's McLovin! McLovin's never existed because it's a MADE-UP DUMB FUCKING FAIRY TALE NAME, YOU FUCK!!!!
Earlier in that scene, when Fogell's explaining why he chose McLovin:
Fogell: Well, it was either that or Mohammed.
Seth: Why the fuck would it be between that and Mohammed?! Why didn't you just pick a common name like a normal person?
Fogell: Mohammed is the most commonly used name on Earth. Read a fucking book for once.
Evan: I love you. I'm not embarrassed, why can't we say it more often? Seth: *pokes Evan's nose* Boop-boop-boop...
Seth telling Evan about his dick drawing problem he had in the 4th grade.
Seth's fantasization as he goes into the store to buy alcohol.
The girl Seth was dancing with at the wild party where they try to steal beer from had her period on Seth's pants. Later, she got drunk and blames him for it and quickly calls the cops on them as they run away.
As well as everyone at the party making fun of the blood on Seth's pants, which, when he's trying to go to the bathroom to wash it off, ends with the memetic "Fuck me, right?!"
Officers Slater and Michaels, upon hearing sirens in the background of a scene (bonus points for not resorting to the predictable punchline of one of them realizing that they're the cops and forgetting about it):