Two and a Half Men Season 4 Episode 5: "A Live Woman of Proven Fertility"
Alan is excited by the prospect of Judith remarrying and ending his alimony payments. Alan gets Charlie to help him when he thinks the marriage might not go through because of Jake disliking her fiance.
Alan: Herb, you haven't touched your beer. Herb: Oh, well I'm not too much of a drinker. Charlie: So let's have a drinking game: Whenever Alan gives me a strange look, we all have a drink. [Alan stares at him] Charlie: Whoops, let's just start it