Retail workers could tell you a story or two about their most memorable customers . As a cashier, you may serve hundreds of people each day, so when someone throws a huge fit or is especially impolite, it sticks with you. Whether you're working in a clothing store or a popular spot in the mall or a fast food restaurant, you're bound to get some odd customers. Usually, customers ask the same few questions over and over. But there are exceptions. For example, one person shared that they had a cus…