Every Monday night at 7, Japanese TV viewers are treated to the sight of comedians being locked inside a fast-food restaurant. Formica tables take the place of iron bars, and instead of three square meals a day the cast is fed a steady diet of the shop's specialties — tonkatsu breaded pork cutlets, donburi rice bowls, pizza. The prisoners can only win their freedom by identifying — and eating — the 10 most popular items on the menu. Several hours and tens of thousands of calories later, they emerge from their confinement, cursing the gray light of dawn and vowing never to touch food again.