Eric, the club's worst golfer, was addressing his ball. Feet apart, just so, eye on the ball, just so, a few practice wiffles with the driver, just so, then swing. He missed. The procedure was repeated and then repeated again. On the fourth swing however he did manage to connect with his ball and drove it five metres down the fairway. Looking up in exasperation he saw a stranger who had stopped to watch him. "Look here!" Eric shouted angrily. "Only golfers are allowed on this course!" The stranger nodded, "I know it, mister," he replied. "But I won't say anything if you won't either!"