The tale of Pablo Picasso eating at a restaurant in Madrid.

At the end of the meal Pablo discovered he had left his wallet at home.

He asked the waiter if he could make a drawing on the paper table cloth.

Reluctantly the waiter said yes and Pablo scratched happily away.

The waiter was surprised that it took no more than half a minute which he bluntly told to Pablo.

Pablo responded: You are right – but it took me more than 30 years to learn the art!