How to get a vending machine to pay you for its goodies, instead of you paying for them. First off, find a older vending machine, and insert your dollar bill as you normally would. Once you have entered it, you can select which ever item you want. Then quickly, before the item dispenses, hold up on the gate to prevent the item from falling. When it falls, it should rest on the back of the gate you're holding up—don't let go yet. After a long wait, the vending machine will think nothing dispensed and you can try again or get a refund using the coin return mechanism.