South Park S06E07 - The Simpsons Already Did It
South Park (1997)
S06E07 The Simpsons Already Did It
Episode Overview
Professor Chaos is back with an array of diabolical plans to cause chaos in South Park, but he soon discovers that the Simpsons have already beaten him to it. Meanwhile, Cartman's "Sea People" are undergoing rapid evolution thanks to a mysterious secret ingredient he’s stumbled upon.