"The golfer & The leprechaun (slightly adult)" joke

An avid golfer hits his ball into the woods. As he goes to look for it, he stumbles upon a leprechaun who is brewing a mysterious concoction.
"What are you making?" asks the golfer. "It smells wonderful."
"This is a magic brew," says the leprechaun. "If you drink it, your golf game will improve remarkably, and you'll never be defeated."
"Well, then, let me have some," says the golfer.
"Have as much as you like," says the leprechaun. "But I must warn you, there is one serious side effect. It will almost certainly diminish your sexual desire."
"I can live with that," says the golfer, and gulps down a full cup.
The brew works. Just as the leprechaun predicted, the golfer defeats all challengers and within six months he's the undisputed local champion.
The golfer is delighted, and one day he goes back into the woods to thank his benefactor.
"It worked," says the golfer. "It really worked! I'm the best golfer this club has ever seen."
"Yes, but how is your sex life?" asks the leprechaun.
"Pretty good," says the golfer. "I've had sex three or four times in the past six months."
"That doesn't sound so great to me," says the leprechaun.
"Actually," says the golfer, "it's not so bad at all for a Catholic priest in a small parish."