Pretty Woman Joke

A pretty woman dressed in a heavy fur coat went to weigh herself.
Asking for some change, she stepped on to the scales.
At the sight of the figure on the dial, she gave an unhappy cry, and took off her coat.
She put in another coin, but was still unhappy , and this time took off her sweater.
Still unhappy she kicked off her shoes this time.
Now said the shop assistant
"From here on," he said, "it's on me."