One day a policeman walks into a supermarket to find three women robbing it. He tries to stop them, but they make it into the back of the store and climb into three bags they find.
The policeman kicks the first bag, and the red head says, "Meow!" in a high-pitched voice. The policeman thinks it is only a cat and moves on.
The policeman kicks the second bag, and the brunette says, "Woof!" in a low-pitched voice. The policeman thinks it is only a dog and moves on.
The policeman kicks the third bag, and the blond shouts at the top of her lungs, "POTATO!!!"