Lily: Damn it.
Barney: What?
Lily: Everybody always says, "Don't tell Lily." "Lily can't keep a secret." And, usually, they're right. But this time, I kept the secret. And then you come along with this crap and you force me to pull an old classic Lily and spill the beans!
Barney: What beans? There's beans?
Lily: There's beans.
[flashback to Barney and Ted in the apartment:]
Barney: The suit is Robin. [imitates explosion] I know! Right?
Ted: I'm with you, buddy.
Barney: You are now. Because I explained it to you. [hugs Ted]
[As the camera pans out, we see Robin standing in the doorway of her bedroom]
Robin: Oh, crap.