Lily: This is gonna kill Barney.
Barney: What's gonna kill me? What's going on?
Marshall: Um, Barney? Have you noticed anything... different about James?
Barney: No. I mean, he's glowing from his peel, if that's what you mean.
Ted: We have reason to believe that James is, uh, maybe hiding something from you. I- I know you're not gonna like hearing this, but...
Lily: Barney, your brother is... monogamous.
Barney: That's ridiculous! Just because he's a little sleepy, and he hasn't had sex with anyone in a bathroom stall... Huh. He hasn't had sex with anyone in a bathroom stall.