'I Found Your Moustache' - Season 7, Episode 17
Charlie and Chelsea have a post-breakup one-night stand.
Air Date: March 8th 2010.
Charlie: I'm going to hate this movie.
Alan: What makes you so sure?
Charlie: It's got subti
Chelsea: I found your mustache.
Charlie: Where'd you find it?
Chelsea: On my ass, where else would I find it.