Friends with benefits the one where the girls get naked

Monica and Phoebe are chilling together while Phoebe practices guitar, when Rachel comes in to chat about some issues she's having with Ross. The conversation eventually moves from chatting about the names of Rachel and Ross's future kids to the tropic of their various experiences with Joey. The girls all dish, but when it's Rachel's turn to describe how she and Joey fucked her friends wind up acting it out. Eventually the trio drops all pretense of pretending to act out a boy/girl experience and just admit that they're all super into each other for a lesbian threesome.