The barber whispers to his customer: “This is the dumbest kid in the world. Watch while I prove it to you.”

The barber puts a dollar coin in one hand and two ten-cent pieces in the other, then calls the boy over and asks: “Which do you want, son?” The boy takes the ten-cent pieces and leaves.

“What did I tell you?” said the barber. “That kid never learns!”

Later, when the customer leaves, he sees the same young boy coming out of the ice cream shop.

“Hey, son! May I ask you a question? Why did you take the ten-cent pieces instead of the dollar coin?”

The boy licked his cone and replied: “Because the day I take the dollar, the game is over!”