One day a man goes to a pet shop to buy a parrot.

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?”

“$2,000,” the assistant replies.

The man is shocked and asks the assistant why it’s so expensive.

“This parrot is a very special one,” the assistant explains.

“He knows typewriting and can type really fast.”

“What about the green one?” the man asks.

“He costs $5,000,” the assistant says.

“He knows typewriting and can answer incoming telephone calls and takes notes.”

“What about the red one?” the man asks.

“That one’s $10,000.”

“What does HE do?” the man asks.

“I don’t know,” the assistant admits, “but the other two call him ‘boss.'”