Marvin was a 14-handicapper, but one day he walked up to his club pro, a scratch golfer, and challenged him to a match. He proposed they put up $100 each on the outcome.
"But," Marvin said to the pro, "since you're so much better than me, you have to give me two 'gotchas'."
"A 'gotcha'?" the golf pro asked, "what's that?"
"Don't worry," Marvin replied, "I'll use one of my 'gotchas' on the first tee and you'll understand."
The golf pro figured that whatever 'gotchas' were, giving up only two of them was no big deal - especially if one had to be used on the first tee. So he agreed to the bet, and the pro and Marvin headed to the first tee to start their match.
Around four hours later, club members were amazed to see the pro handing Marvin $100.
The pro had lost to Marvin!
The club members waited for the pro to enter the clubhouse, then asked him what happened.
"Well," the pro said, "I took the club back on the first tee, and as I started my downswing, Marvin knelt behind me, reached up between my legs and grabbed my crotch, and yelled 'Gotcha!' "
The club pro just shook his head. "Have you ever tried to play 18 holes waiting for the second 'gotcha'?"