A young boy is getting his hair cut in a barber shop and the barber whispers to his waiting Customer, "This is the dumbest kid in the world. Watch while I prove it to you."
The barber puts a five rupee coin in one hand and two one rupee coins(1+1=2) in the other, then shows it over to the boy and asks, "Which do you want, son?"
The boy takes the two one rupee coins and leaves after he got his hair cut. "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 two one rupee coins instead of five rupee coin?"
The boy licked his cone and replied,
"Because THE DAY I TAKE THE FIVE RUPEE COIN, THE GAME IS OVER
Moral: When you think the other person is dumb, you are making a fool of yourself.