The One With the Baby on the Bus - S2-E6
Joey: Ducks is heads, because ducks have heads.
Chandler: What kind of scary-ass clowns came to your birthday?
Chandler: You have to stop the Q-Tip when there's resistance!
The One After the Superbowl, part 2 - S2-E13
Chandler: Stick a fork in me, I'm done.
Phoebe: Stick a fork what?
Chandler: You know, like when you're cooking a steak.
Phoebe: Oh, I don't eat meat.
Chandler: Well how do you tell when vegetables are done?
Phoebe: Well you just, you know, you eat them and you can tell.
Chandler: Okay, then eat me, I'm done.
The One with All the Poker - S1-E18
Rachel: You guys, guess what guess what guess what?
Chandler: What, the fifth dentist caved and now they're all recommending trident?
The One With The Prom Video - S2-E14
[After Chandler's just mocked Monica for being fat in an old home movie.]
Monica: Shut up, the camera adds 10 pounds!
Chandler: So how many cameras are actually on you?
The One Where Monica Gets a Roommate - S1-E1
Rachel: Well maybe I don't need your money! Wait, wait, I said maybe!
The One Where Ross Got High - S6-E9
Rachel: You guys, it was bananas, cream, and beef! I just cannot believe that you ate that so that I wouldn't feel bad.
Monica: Actually, I didn't eat mine. It's still in the bathroom.
Joey: No, it isn't. I ate that.
Judy: And we left ours in Monica's bedroom.
Joey: No. Got it, [nods to Jack] and got yours, too.
The One In Barbados, part 1 - S9-E23
Mike: I love you.
Phoebe: I love you more.
Mike: Not possible.
The One Where Ross Can't Flirt - S5-E19
Ross: By the way, if it makes you feel any better, I happen to like 8 year-old boys.
Rachel Green: Oh my God, I'm Kip.
Joey Tribianni: You're not Kip.
Rachel Green: Do you even know who Kip is?
Joey Tribianni: Who cares? You're Rachel. Who's Kip?
Chandler Bing: Kip was my old roommate.
Joey Tribianni: Oh, THAT poor bastard.
Phoebe: And then we can teach them to sing and we'll be like the Von Trapp family. Although without the Nazis - no, that sounds kinda dull.
The One with the Monkey - S1-E10
Ross: His name's Marcel. My friend Bethel rescued him from a lab.
Phoebe: That is so cruel! Why? Why would a parent want to name their child Bethel?
Answer: The painting doesn't have a name, and if it does it is never mentioned in this episode.