When someone tells us a joke or does something funny, we laugh and call them funny. But if you think about it, laughing may tell us more about ourselves than the person performing or doing the act. What we laugh at may give a good indication about our personality and our own makeup. Sometimes it is a genuine laugh, or it can be a sympathetic laugh, or a nervous laugh. It has been said that one half of the world laughs at the other half, and both are fools.