Pinky and the Brain S04 E01 Brainwashed Pt. 1: Brain, Brain, Go Away

"One is a genius, the other's insane."

Pinky and Brain are kidnapped in Washington, DC by an unknown force. Brain loses his memory and the mice are then imprisoned in a town where everyone is forced to perform the Schëerskåhøvên, which is dumbing down the entire country.