Humor has been a part of magic as entertainment since the first court jester dropped the fruit he was juggling. Nearly every stage magician will use humor in his or her repertoire, or at the very least use a joke to cover the failure of a trick. If you ever feel that you are losing the attention of your audience, then there is nothing like a comical trick to bring their focus back to you.
The Vanishing Bandanna is one of the oldest magic tricks ever performed; it is also one of the funniest magic routines you will ever perform. Long after your show is over and your audience has gone home, they will still be laughing and talking about this hysterical trick.