What Is South Park’s Most Underrated Episode? “W.T.F.” was the tenth episode of South Park Season 13, and sees Cartman and the other boys starting up their own wrestling league in the backyard.

Joe Jonas Reflects on Infamous ‘South Park’ Episode: ‘I Was the Only Brother That Loved It’ "I think it's one of my favorite episodes," Joe Jonas says of South Park's season 13 premiere.