for the child who is intensely competitive but too fat to play sport, there is the Transform-a-Snack race. Packets cost 10p a bag, and up to three bags could be used in any one race. The game is played while walking rapidly, and an adjudicator is required to apply improvised penalties should a crisp fall on the floor. Conceivably, more than three bags could be used, but after three bags of rapidly eaten Transform-A-Snacks, the roof of your mouth is painfully tattered, and it becomes a test of endurance rather than speed.