South Park: Season 7, Episode 3 - ProjectFreeTV

7 - 3: Toilet Paper

When the art teacher makes the boys stay after school for being rude in class, they TP her home. Afterwards, Kyle feels guilty and wants to confess, but Cartman won't allow it. Officer Barbrady investigates the crime with the help of a vandal named Josh, who wants something in return for his assistance.