A young boy 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 five pound note in one hand and two one pound coins in the other, then he calls the boy over and asks, ‘Which do you want son?’
The boy takes the two one pound coins and leaves the five pound note.
‘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 and says,
‘Hey, son! May I ask you a question? Why did you take the two coins instead of the five pound note?’
The boy licked his cone and replied, ‘Because the day I take the five pound note, the game’s over!’