And it's all to do with parrots. A man goes into a pet shop to buy a parrot and spies three of them. The first one costs pound;5,000. It is amazingly handy with computers and can work any program.
The second parrot costs pound;10,000 and is so sophisticated it can not only handle any program but repair hardware and devise its own software.
The third parrot costs pound;15,000. "What does it do?" asks the buyer.
"I don't know, but the other two parrots call him boss."