"Well, what should I do?" Asks the man.
"Hold the club gently," the pro replies, "just like you'd hold your wife's breast."
The man takes the advice, takes a swing, and POW! He hits the ball 250 yards straight down the fairway.
The next day the wife goes for her lesson. After the pro watches her swing, he says, "No, no, no, You're gripping the club way too hard."
"What can I do" asks the wife?
"Hold the club gently, just like you'd hold your husband's penis."
The wife listens carefully to the pro's advice, takes a swing and THUMP. The ball goes straight down the fairway, about 35 feet.
"That was great," the pro says, "Nice and gentle. Now take the club out of your mouth and swing it like you're supposed to"!