South Park
Season 1, Episode 13: Cartman's Mom Is a Dirty Slut
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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.
All Episodes - Season 1
Episode 1
Cartman Gets an Anal Probe
Episode 2
Volcano
Episode 3
Weight Gain 4000
Episode 4
Big Gay Al's Big Gay Boat Ride
Episode 5
An Elephant Makes Love to a Pig
Episode 6
Death
Episode 7
Pinkeye
Episode 8
Starvin' Marvin
Episode 9
Mr. Hankey, the Christmas Poo
Episode 10
Damien
Episode 11
Tom's Rhinoplasty
Episode 12
Mecha-Streisand
Episode 13
Cartman's Mom Is a Dirty Slut