Ross: Hey, is Rachel here? Um, I wanted to wish her a happy birthday before I left.
Monica: Oh, no, she's out having drinks with Carl.
Ross: Oh... Hey, who's Carl?
Monica: You know, that guy she met at the coffeehouse.
Phoebe: Oh, well, see, there's this guy she met at the--
Ross: At the coffeehouse? Right.
Phoebe: So you do know who he is!