The boy and the barber

The barber puts a dollar coin in one hand and two 20 cent coins in the other, then calls the boy over and asks, “Which do you want, son?” The boy takes the 20 cent coins 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 store.

“Hey, son! May I ask you a question?

Why did you take the 20 cent coins instead of the dollar coin?”

The boy licked his cone and replied,

“Because the day I take the dollar, the game is over!”