Little Billy was sitting on a park bench munching on one candy bar after another.

After the 6th one, a man on the bench across from him said, "Son, you know eating all that candy isn't good for you. It will give you acne and rot your teeth."

Little Billy replied, "My grandfather lived to be 107 years old."

"Oh?" replied the man. "Did your grandfather eat 6 candy bars at a time?"

"No," replied Little Billy, "he minded his own damn business!"