Making it even

[tonyp]

An Aussie and a Pom are fishing one afternoon and have a couple of cold beers. After a while the Pom says to the Aussie, "If I was to sneak over to your house and made wild passionate love to your wife while you were at work, and she got pregnant and had a baby, would that make us related?" The Aussie after a great deal of thought, says, "I don't know about related, but it sure would make us even."