Marshall: You told him?
Lily: I had to. I'm Slap Bet Commissioner. Baby, this hurts me more than it's gonna hurt you.
Barney: Don't count on it. I've been practicing on a tree trunk.
Lily: Barney gets three slaps.
Marshall: Three?
Lily: One because you lied. And two for being prematurely slapped. Three slaps.
[Barney slaps Marshall three times in rapid succession.]
Barney: Oh, my God. Are you gonna cry?
Marshall: No. You're gonna cry.