This story includes one overworked, tired cashier who despised the fact that he had to keep pointing out a strikingly obvious sign that read, ‘Leave your shopping cart outside’ to customers who did not go out of their way to read it. This story also involves a customer who worked at a liquor store and had to get a bunch of bottles for the upcoming holiday. So in simple terms, it included two minimum-wage workers who were not getting enough money for dealing with other people's messes on a daily…