South Park: Season 8, Episode 13

8 - 13: Cartman's Incredible Gift

Cartman suffers a head injury after trying to fly from his roof. While he is in the hospital, the police think that Cartman's trauma might have made him psychic, and they want him to help them catch a serial killer. Despite Cartman's bad suggestions, the detectives believe his gift is real. Meanwhile, Kyle tries to prove that Cartman's psychic powers are fake.