Dumbest kid in the world

A young boy Bobos, enters a barber shop and 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 bill in one hand and two quarters in the other, then calls Bobo over and asks:
– Which one do you want, son?

Bobos takes the quarters and leaves.

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

Later, when the customer leaves, he sees Bobos coming out of the ice cream store.
– Hey, son! May I ask you a question? Why did you take the quarters instead of the dollar bill?

Bobos licked his cone and replied:
– Because the day I take the dollar, the game is over!