Ross: I can't compete with the guys she goes out with. They're so out of my league. Oh, my God!
Phoebe: Worse?
Ross: Oh, much, much worse. I did my impression of Joan Rivers as one of the earliest amphibians. "Can we walk?" [Phoebe laughs] Oh, you like that?
Phoebe: No.
Ross: What?
Rachel: Come on! I think that's funny! Woolly mammoth.