Marshall: I call "slut!"
Robin: Excuse me?
Marshall: I'm sorry, Robin, but you hooking up with this guy makes it seem like the only thing standing between you and sex is clothes.
Robin: I didn't just sleep with Mitch because he was naked.
Marshall: Then why did you sleep with him?
Robin: Because... He, uh... He, uh... Because I care about Mitch. A lot. There was a, uh, connection of specialness., of specialness and feelings.
Marshall: It was because he was naked. And I'm sorry, but I don't approve. There is only one reason to sleep with somebody, and that is love. [all laugh] Oh, yeah, Marshall's a big girl because he believes in true love and just finished reading The Notebook because the secretaries bullied him into joining Oprah's Book Club.