I don't want to incrimminate my friend, but he used to work at a certain Mexican fastfood place's drive thru, late night. He told me how he had a scam going, where he'd conveniently forget to ring up orders, and would just pocket the money when customers would pay. Being that employees were permitted to make food for themselvbes, my friend was able to cover his shinanigans. It all came to an end when he let other workers into his scheme, and one of them very idiotically kept the money even after he had rung the customers up. Even though the less than bright employee kept his mouth shut, the manager told my friend he knew he was involved, because he was the only one working there who was smart enough to pull this off. My friend quit, then blew his money going on vacation.