Marshall: Hey, Barney? Listen, um, we made a baby in your bathroom. So we owe you one. So we say... you can take off the ducky tie. For three slaps.
Barney: Three slaps?
Lily: And to be clear, this would add three slaps to Marshall's existing one, giving him four slaps in total.
Barney: Deal. I'm free! God, this feels so good! [Marshall lumbers up] This was a mistake! I wanna put the tie back on! I wanna put the tie back on! Why do I have to be Barney right now?
[Marshall slaps Barney]
Lily: Three slaps remaining!
Marshall: Three slaps. Wow, I like the sound of that. I think I'll save those bad boys, you know, for a rainy day.
Barney: Okay. The worst is over.
[Marshall slaps Barney]
Barney: Ah!
Lily: Two slaps remaining!
Marshall: It's all right. Hey, it's all done... for now.
Barney: I think I need to go home and reevaluate how I make life decisions.