...park, a jogger found a brand new tennis ball, and seeing no one around it might belong to, he slipped it into the pocket of his shorts. Later, on his way home, he stopped at the pedestrian crossing, waiting for the light to change. A blonde standing next to him eyed the large bulge in his shorts. "What's that?" she asked, her eyes gleaming. "Tennis ball," came the reply from the man. "Oh," said the blonde, sympathetically, "That must be painful. I had tennis elbow once."