Two guys are trying to get in a quick eighteen holes, but there
are two terrible lady golfers in front of them hitting the ball
everywhere but where it's supposed to go.

The first guy says, "Why don't you go over and ask if we can play
through?" The second guy gets about halfway there, turns and comes
back. The first guy says, "What's wrong?"

He says, "One of them is my wife, and the other is my mistress."

The first guy says, "That could be a problem. I'll go over."
He gets about halfway there and he turns and comes back, too.

The second guy says, "What's wrong?"

The first guy says, "Small world!"