When you come to a vending machine and see that a bag of chips or a pastry has hung up on the coils (called the bonus vendable) and has not fallen to the retrieval bin, and you decide to buy a product stocked above that bonus vendable (this product is known as the vendable in play, or vip) in hopes that the falling of the vip will knock the bonus vendable item down, too, effectively giving you two items for the price of one.
People use different strategies when playing vendchinko; some people try to buy the next item in the bonus vendable’s slot, which yields them two of the same item. This strategy can backfire, however, if the items are loaded incorrectly so that the bonus vendable falls, but the vip hangs up the same way the bonus vendable had been stuck, effectively giving the player only one item for the money and creating a new bonus vendable.
When selecting a vip above the bonus vendable, experienced vendchinko players account for the density of the vip’s contents, the packaging of the vip and the bonus vendable, the rotation of the vending coil, and the Coriolis force to maximize their chances of winning at Vendchinko.
So that’s why I stand there for so long in front of the vending machines.