Frank: A cowboy and a teacher walk into a store..
Charlie: Well that doesn’t make any sense. Cowboys hate teachers, they’re independent thinkers!

You can't even spell.

Dennis

I have a name.

The Waitress

Charlie: Come stand next to me, then.
Dee: Why?
Charlie: So she doesn't think I'm creepy.
Dee: Well, you are creepy.
Charlie: I realize this. That's why I need you.

I guess he's on the mothership now.

Charlie

You cannot sort out a man who kills and eats other human beings.

Dennis

You know, Den, I was thinking about what you were saying the other day about the t-shirts with the stupid slogans on them, and I was wondering what you think about this! (reveals a shirt that says "Death to baby killers") Huh, bitch? Yeah, is that stupid enough for ya?

Mac

The psycho struggle!

Charlie

Be the caboose.

Mac

They mess with their brains up there, don’t they.

Charlie

He needs to be absolved so he can go crazy again.

Mac

Mac: I don’t think you were there.
Cricket: I was there Mac, my whole face burned off, I was there.

It's Always Sunny Quotes

Charlie: I'll totally pull a Good Will Hunting on those kids and that'll put them in their place.
Mac: How you gonna do that?
Charlie: Well, you've seen the movie right?
Mac: Yeah.
Charlie: So all I gotta do is, I'll ask them some big shot, like math or science, history-type college question aand that will totally stump them by knowing a lot more about the answer than they do.
Mac: In that movie, Matt Damon played a genius janitor, you're just a janitor.
Charlie: Right, you stumped me with that one.

Mac: He doesn't have any poison.
Charlie: I don't have any on me, but I do keep some in my fridge at home in the relish jar.
Frank: There's poison in that jar? I thought I was allergic to pickles. What's in the jar with the skull and crossbones?
Charlie: Well that's mayonnaise. It's a decoy.
Frank: And the mayo?
Charlie: That's shampoo.
Frank: You're telling I've been putting shampoo on my sandwiches?
Charlie: If you've been using the mayonnaise, then yeah, probably.