One day a man goes to a pet shop to buy a parrot. "I would like to buy a parrot," he says.

The assistant takes the man to the parrot section and asks the man to choose one. The man asks, "How much is the yellow one?"

The assistant says, "$2000."

The man is shocked and asks the assistant why it's so expensive. The assistant explains, "This parrot is a very special one. He knows typewriting and can type really fast."

"What about the green one?" the man asks.

The assistant says, "He costs $5000 because he knows typewriting and can answer incoming telephone calls and takes notes."

"What about the red one?" the man asks.

The assistant says, "That one's $10,000."

The man says, "What does HE do?"

The assistant says, "I don't know, but the other two call him boss."