Golf Nut
Last summer John met a woman while on vacation and fell head over heels in love with her. On the last night of his vacation, the two of them went to dinner and had a serious talk about how they would continue the relationship.
"It's only fair to warn you, I'm a total golf nut," John said to his lady friend.
"I eat, sleep, think and breathe golf, so if that's a problem, you'd better say so now."
"Well, as long as we're being honest with each other, here goes," she replied. "I'm a hooker."
"I see," John replied, and was quiet for a moment.
Then he added, "You know, it's probably because you're not keeping your left wrist straight on your follow-through."