Barney: Guys, this is real. And if you don't make me look good in front of Nora, just remember: I've got dirt on each of you, and I am not afraid to spill it.
Lily: Barney, you can't blackmail us into lying to Nora.
Barney: Really, Lily? Even if I were to mention, oh, I don't know... your kindergarten class's pet guinea pig?
Lily: [gasps] Mr. Buttons? Oh, you son of a bitch. Fine. I'll be nice.