Fred and Steve are sitting around one afternoon having a beer. After a while Steve says, "If I were to sneak over to your house and make love to your wife while you were off fishing, and she got pregnant and had a baby, would that make us related?"
Fred crooked his head sideways for a minute, stroked his bow and squinted his eyes thinking real hard about the question. Finally he says, "Well, I don’t know about being related, but it would make us even!!"