Plot summary
Malcolm pretends to be stupid so he can win over a cute girl named Alison (Brittany Finamore) who really is stupid and soon finds that he is actually becoming dumber. Stevie wins Lois' approval and she takes him to the school dance. Hal rents a steamroller and becomes addicted to running over various objects until Dewey brings him back to his senses by standing in front of it. Meanwhile, Francis saves Otto from being conned by a con-artist selling him cow sunscreen.
Credits
Adapted from Wikipedia contributors, Malcolm in the Middle season 4. HTML formatting and reference markers removed.