Quote from Barney in The Drunk Train
Marshall: Can we please talk about something other than my wedding night? Barney: Absolutely. Let's talk about last night. It was a night like any other. I was just about to get laid... [flashback to MacLaren's the night before:] Ted: Hey, Barney, I need your help. This hottie I'm talking to is meeting her friend at a club, so I need a wingman. Barney: Well, just so you know, I'd be giving up a sure thing here. Woman: Hey! Barney: Are you not a sure thing? Woman: Yeah, I am.