Two men are playing golf. They play each week, and have a wager as to
who is going to win.  One week there are these two women at the hole
ahead of them. They're hitting the ball all over the place.  They have
no idea how to play. They are just having a good ole time.

The two men are anxious to finish their game. One of them decides to
ask the women if they can play through.  He goes up the hill, then
comes back down. He tells his friend "I can't do it.  One of the women
is my wife and the other one is my mistress."  The other guy says "No
problem. I understand." So he goes up the hill.  2 minutes later, he
comes back down the hill and says, "Gee, small world, isn't it?"