A broom seller went to a barber for a shave. The barber bought one of the man's brooms. After the shave, the barber asked the price.
"Two pence," said the seller.
"No," said the barber. "I'll give you a penny. If that's not enough, you may take your broom back!"
The seller took the penny and asked the cost of his shave.
"A penny," said the barber.
"I'll give you a half penny," replied the man. "And if that's not enough, you may put my beard on again."