When I was working as a cashier at the furniture store, I was dealing with all sorts of people. One woman was extremely rude to me and kept saying mean things like I didn't know what I was doing (granted I was overqualified for the job and it was my first week there). All I said to her was: I don't care if I get fired but I won't let you speak to me that way. You need to apologize before I can help you! She muttered some sort of apology and we kept going. After she left I noticed my manager standing behind my back chuckling. He didn't say anything and I didn't get fired. Later I found out that the woman was mean to everyone and I was the first person to say anything.