I used to work at a restaurant. We served burgers and friends, that type of thing, at a major tourist attraction. Some of the food, i.e. the chicken strips, were prepared, boxed and ready to be served. I served one of these boxes to a customer who had purchased a kids meal. Instead of giving her a box with 3 chicken strips, I gave her a box with 4. So she got one extra chicken strip (oh happy day)! She got extremely mad at me for giving her an extra chicken strip and even had me call my manager to speak to her. We were all a bit confused. But note that I am now extremely careful with the chicken strips.