Quote from Barney in Slap Bet
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.