South Park

Season 1, Episode 13

Episode Title: Cartman's Mom Is a Dirty Slut

Air Date: 1998-02-25

Overview:

Cartman needs to find out who his father is but his mom is no help. Learning that his father could be one of the many people that his mom had "relations" with during an annual party called "The Drunken Barn Dance", he finds that there's more to his mother than he thought.