Sweet Dee: How could you not tell me you were gay?
Terrell: I'm a musical theater actor!

Mac: Why do these people like you guys so much?
Charlie: Well dude, it's not that they like us, they don't like you! You know why? Uhhh, because you're an asshole!

Dennis: Our mortgage is due in two weeks.
Mac: No, we paid that, like, a week ago.
Dennis: No. A week ago was three weeks late.

(After Charlie throws away a girl's number)
Mac: Whoa, whoa, whoa, whoa. What are you doing, dude?
Charlie: What?
Mac: What are you doing?
Charlie: Ah.
Mac: That girl is gorgeous. She's like the perfect opportunity to show that we are not racist. She probably has friends for me.
Charlie: Well, come on. If anything, I think we should be focused on black men, first of all.
Mac: What?!

Mac: You have a bad shoulder, and that's why you could never have a catch with me, right?
Mac's Dad: Riiiiiight.

Yeah, I botched it -- life.

Bill

Come on! You guys own a bar! You guys watch people slowly kill themselves everyday right?

Bill

I've had a few surgical operations to enhance my natural beauty.

Maureen

Mac: Okay, daddy. I love you dad!
Charlie: Let it go. Let it go.

A man should be able to end his life if he wants -- we're American!

Dennis

Charlie's Mom: I can't lie to my Charlie!
Charlie: Good! Tell me everything!
Charlie's Mom: Okay, they were both here. They were both inside me. Eduardo was in my mouth, and Luther was in my butt.

Mac: Tell us more!
Charlie's Mom: Then Luther went in Eduardo's butt for a while.
Mac: Tell us less, tell us less.
Charlie's Mom: Then they both completed on each other -- I was left out of the finale.

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.