It makes me think of a story I heard about how monkeys are supposedly captured. A hole is drilled in a coconut and something shiny is put inside. The monkey can get his hand in, but he can't get it out if he's making a fist, grabbing the shiny item. The monkey is too dumb to let go and he gets captured. We need a vending machine like this, if you're fat and you're holding on to a candy bar, you can't get your hand out of the machine.