There are many different acts in circuses. Some people do acrobatics and gymnastics. Often a group of gymnasts will finish up standing on top of one another in a pyramid. The gymnasts may also do jumping acts on trampolines. Some people are jugglers, throwing things in the air and catching them. There may be people who walk on stilts or who ride on unicycles. They may perform magic which may include swordswallowing, knife throwing or fireeating. There are always clowns who do funny things to make people laugh. They trip over things and fall over, throw buckets of water over one another or put custard pies into one another’s faces. Sometimes these clowns are also very skilful acrobats, musicians or jugglers. They may pretend to be stupid at first, but they often show that they are very clever.