My ex-boyfriend and a few friends of mine in high school used to work at a fast food place. They used to laugh about how the used lettuce and stuff out of the trash can when the customer's gave them a hard time. One day I went in and my ex and one of his friends was goofing around and knocked a whole tray of nuggets to the floor. They just picked them up and put them back on the tray.
Another friend of mine worked at a different resturant and a customer complained about his rudeness, so he jacked off in her mayo.