Ted: I don't understand. If last night went so horribly, why do Lily and Marshall think it was such a hit?
[flashback to Barney and Robin leaving Marshall and Lily's apartment:]
Barney: I mean, we knew we were gonna have fun tonight, but we had no idea how much.
Marshall: Oh.
Robin: Yeah, tough luck, every Saturday night I've ever had, 'cause this one just blew you out of the water.
Barney: Let's do it again, soon.
Robin: Yeah, we'll call you.
[back:]
Ted: They're your friends! Why would you just blatantly lie to them like that?
Robin: Well, that's what you say at the end of a crappy date.
[A woman comes out of the bathroom]
Woman: Hey, Ted. Great time last night. Well, let's do it again, soon. I'll...uh, call you. [exits]
Ted: Right?