'The Soil is Moist' - Season 5, Episode 13
Alan finds out some surprising information about Judith's sex life when he decides to go on a date with one of her friends.
Air Date: March 30th 2008.
Cynthia: Hi, Jake, look how big you're getting.
Jake: It's called puberty.
Charlie: It's called donuts.
Jake: Donuts don't make hair. *Glances towards his crotch*.