Okay, so you know how sometimes people say things that make you sad or upset? Well, some people do this on purpose to try and make other people feel bad. This is called being mean and it's not a nice thing to do. When someone says a mean thing that is meant to hurt someone's feelings, this is called a cruel joke. Cruel jokes are not funny and can make people feel really sad and hurt. It's important to be kind to others and not say things that could hurt their feelings. Remember, if you don't have anything nice to say, it's best to not say anything at all.