The Simpson's Cupcake Contest was a boardwalk style arcade game that was produced in 1990 by Bromley
Your goal was to see how many cupcakes (said cupcakes were actually balls that the Lisa CPU would drop at random) you could eat to outscore your computer or human opponent.
How this was achieved was by buttons that would open the mouth of both Bart and Homer. Not opening your mouth in time would result in the ball taking a plunge.