Bob goes with his friend, a comedian, to a comedian's meeting. When they get there, one of the men stands up and shouts out "34!” and all the other comedians laugh hysterically. Bob turns to his friend and says "I don't get what was so funny!” and his friend explains to him that the Comedians' Guild has assigned each joke a number to make them easier to tell.
All through dinner, the members of the Guild stand up and say numbers, and every time, everyone laughs, so Bob decides to give it a try. He stands up, and shouts out his favorite number: "54!" Dead silence.
Bob turns to his friend and asks "What did I do wrong? When ever you do it, they laugh!" And his friend answered, "You didn't tell it well."