Would they be related?
 

Two Irishmen were sitting around talking one afternoon over a cold beer.

After a while the first Irishman says to the second, "If I was to sneak over to your house and make love to your wife while you was off fishin' and she got pregnant and had a baby, would that make us related?

The second Irishman crooked his head sideways for a minute, scratched his head, and squinted his eyes, thinking real hard about the question.

Finally, he says, "Well, I don't know about related, but it sure would
make us even."