Barney: Marshall popped his cherry! Come on, Marshall, you have to admit, the guy was a disaster. It reflected badly on the company. He was an embarrassment. A huge embarrassment.
Lily: You slept with Randy!
Marshall: [gasps]
Robin: What?
Lily: It's elementary, my dear Scherbatson. Your co-host is getting super-popular because of her stupid commercial. So, when you arrived at the GNB party after we left, you were feeling vulnerable and drunk. Then, from across the not-so-crowded conference room, your eyes met. And as we all remember, Randy has a unique condition.
Robin: That's... exactly what happened.