The juiciest vending machine
It’s important that you learn math, people. For instance, how many quarters are there in a dollar? If you answered five, then you would fit right in this vending machine manufacturer. If you put in a dollar bill into the vending machine and requested a refund, you would receive five quarters. That’s a 25% gain for every transaction!
A student found out about this loophole by total accident but didn’t feel the need to alert anyone. Who would if you could get free drinks until the problem magically went away? Sadly, the refund issue was fixed after a month or so. Soon, people had to purchase thirst-quenching beverages the honest way. Darn…