'Fart Jokes, Pie and Celeste' - Season 7, Episode 12
Jake writes love songs to woo his ex-girlfriend, and Herb and Alan hide their secret friendship from Judith's watchful eye.
Air Date: January 11th 2010.
Alan: Heard any good jokes lately?
Charlie: Yeah. "Two brothers are sitting on a couch. One of them says: 'Heard any good jokes lately?' and then the other one, get this, the other one... lights him on fire".