Two men are playing a round of golf

[Genetic Defect]

Two men are playing a round of golf when they get stuck behind two women. Eventually one of the men walks over to ask if they can play through. He scuttles back and says, "When I got closer, I realized it was my wife and mistress," he says. "You go and ask them instead."

The other one walks over to the women but hurries back and says, "Small world."