"Would you be willing?" joke

A golfer is in a competitive match with a friend, who is ahead by a couple of strokes. The golfer says to himself, "I'd give anything to sink this next putt."
A stranger walks up to him and whispers, "Would you give up a 1/4 of your sex life?"
The golfer thinks the man is crazy and that his answer will be meaningless but 'Hey!' perhaps this is a good omen and will put him in the right frame of mind to make the difficult putt and so he says, "OK."
And he sinks the putt!
Two holes later he mumbles to himself, "Boy, if I could only get an eagle on this hole."
The same stranger moves to his side and says, "Would it be worth another fourth of your sex life?"
The golfer shrugs and says, "Sure."
And he makes an eagle!
Down to the final hole, and the golfer needs yet another eagle to have his best score ever! Though he says nothing, the stranger moves to his side and says, "Would you be willing to give up the rest of your sex life to make this putt?"
The golfer says, "Absolutely! I most certainly would!"
And he makes the eagle!
As the golfer happily walks to the club house, the stranger walks alongside and says, "You know, I've really not been fair with you because you don't know who I am. I'm the devil! And I will hold you to your word, and from now on you will have no sex life."
"Nice to meet you," says the golfer. "My name's Father O'Malley."