The man and his new car.

A man is driving his new car home. He is spotted by a police officer who thought that the car was stolen. He pulls the man over. He draws a circle in the ground with a piece of chalk and tells the man to stand in that circle until he was told to come out. The cop smashes the windscreen and turns around to see that the man is laughing. He smashes the headlights and turns around again and the man is laughing. So he completely destroys the car, turns around and the man is still laughing. The cop asks him "Is this your car?" The man says "Yes." The cop then asks "Aren't you sad I destroyed your car?" The man nods. Then finally the cop asks "Then why are you laughing?" The man replies "Because every time you weren't looking I was jumping in and out the circle."