Quote from Marshall in First Time in New York
Robin: Oh, that's adorable. Ted: Yeah, tell her what happened next. [flashback to Lily and Marshall's college room in 1996:] Marshall: That was amazing. Lily: Yeah. Want to do it again? Ted: [on the top bunk] Please don't. [back:] Marshall: We said we were sorry. Ted: Yeah, well, then why'd you do it again? Marshall: You know what, I loaned you my Walkman.