I saw that a long time ago
Its an old joke called the anti-joke, comidians use to use them. Basdically you go into depth about something disgusting and have a punch line that isn't funnyu. its suppose to be so anti-funny it's funny
This is a movie....it just came out...its called "The Aristrocrats"....bascially for 2 hours they ask dozens of comedians about that joke...and they all tell it in thier own way....im waitin for it to come out on DVD....