A little boy enters a hairdressing salon. The barber whispers to his customer, "This is the stupidest boy in the world. Watch me prove it to you."
 

The barber takes a dollar bill in one hand and two quarters in the other, then calls the boy over and asks, "Which one do you want, boy?"

The boy takes the two quarters and leaves.

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“What did I tell you?” the hairdresser asks his customer. "The boy never learns, no matter how many times I play this game with him."
 

Later, as the customer leaves the hair salon, he sees the same boy coming home from an ice cream shop.

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"Hey, you! Can I ask you a question? Why did you take the 25 cent pieces and not the dollar bill? You know the dollar is worth more, right?!"
 

The boy licks his ice cream cone and replies, "Because the day I take the dollar, he won't play with me anymore."