Grim tries to feed Billy a bookworm to take over his body and pass a math test for him. Billy's cat swallows the worm instead and begins tutoring Billy. It is a futile effort, but the bookworm's methods work in real life.
Billy hears a cereal commercial on the radio while driving with his dad. Desiring the cereal, he quickly grabs the wheel and begins driving to the supermarket, crashing through the walls of it and finds the cereal he desires. The normal-sized box is huge, so it sits next to his Dad while Billy is tied to the top of the car to make room.