Quote from Joey in The One with the Birth Mother
Rachel: Hey, who's Phoebe with? Joey: I wanna say, "Someone I'm gonna have sex with." Joey: Hey. Phoebe: Hey. Joey: So who's your friend? Phoebe: Oh, that's Sarah. No, no. Don't you get any ideas. No, I'm not setting you up with any more of my friends. Joey: Why? Why? Phoebe: Because you'll date her once, sleep with her and then forget she exists. Joey: Name one friend of yours that I did that with. Phoebe: Mandy. Joey: Mandy, huh? Really hot blond, big boobs? Phoebe: No. Joey: Might be why I don't remember, huh? Rachel: Do you think I'm someone else?