Panda

A panda bear walks into a restaurant. He orders the special and eats it. After eating, he pulls out a pistol, kills the waiter and starts to walk out the door.
The owner of the restaurant says, "Hey, what are you doing? You come in here, you kill my waiter and walk away without saying a word. I don't understand."

The panda says, "Look it up in the dictionary," and walks out the door.

So the owner gets out a dictionary and looks under the heading "Panda". It reads:

panda: black and white animal; lives in central China; eats shoots and leaves.