A man goes into a pet shop to buy a parrot. The shop owner points to three identical-looking parrots on a perch and says, "The parrot on the left costs £500 pounds”
"Why does the parrot cost so much?" asks the man. The owner says "Well the parrot knows how to use a computer."
The man then asks about the next parrot and learns that it costs £1000 Pounds because it can do everything the first parrot can do plus it knows how to use the complex operating system.
Naturally, the increasingly startled man asks about the third parrot, only to be told that it costs £2000 pounds. Needless to say, this begs the question, "What can it do?"
To which the owner replies, "To be honest, I have never seen it do anything, but the other two call him boss!"
