Cruizinoz
Bloke walking home from work past a golf course and spots a ball in the rough. As he is a keen golfer he jumps the fence and picks it up and continuing walking beside the fairway soon has his pockets full of wayward golf balls. He continues on and catches his train where he notices a lady looking at him, or more correctly looking at his crutch region. He discreetly checks his fly to ensure he has not left it undone. All the time she keeps eyeing him until he looks down and sees his pockets bulging with the golf balls. Then it twigged and he looked at her and explained, "Golf Balls". "Oh" she said, "Is that as painful as Tennis Elbow?"