South Park: Season 6, Episode 15

6 - 15: The Biggest Douche in the Universe

Cartman's body cannot contain Kenny's soul much longer, so Chef and the boys looks for ways to remove Kenny's presence. They go to New York to see a medium, but discover he's a fake - only Kyle believes in him. Stan sets out to prove that the medium is the "Biggest Douche in the Universe". Meanwhile, Chef takes Cartman to Scotland and visits his parents, who try to free Cartman of Kenny's soul.