A guy was walking down the street when he was startled to see a beautiful, young nude girl running past him. She was closely followed by two men dressed in white. A moment later, a third man carrying two buckets of sand brought up the rear.

The guy stopped the third man and asked, "What's going on?"

"She just escaped from the mental hospital," the man puffed.

"I see. But why are you carrying the sand?"

"It's my handicap," the man said. "I caught her yesterday."