A farmer had five female pigs. Times were hard, so he decided
> >> to take them to the county fair and sell them. At the fair, he met
> >> another farmer who owned five male pigs. After talking a bit,
> >> they decided to mate the pigs and split everything 50/50.
> >> The farmers lived sixty miles apart. So they agreed to drive thirty
> >> miles each, and find a field in which to let the pigs mate.
> >> The first morning, the farmer with the female pigs got up at
> >> 5:00 a.m., loaded the pigs into the family station wagon, which
> >> was the only vehicle he had, and drove the thirty miles.
> >> While the pigs were mating, he asked the other farmer, "How
> >> will I know if they are pregnant?"
> >> The other farmer replied, "If they're in the grass in the morning,
> >> they're pregnant. If they're in the mud, they're not."
> >> The next morning the pigs were rolling in the mud. So he
> >> hosed them off, loaded them into the family station wagon
> >> again, and drove to the field to try again.
> >> This continued each morning for more than a week. One
> >> morning the farmer was so tired, he couldn't get out of bed.
> >> He called to his wife, "Honey, please look outside and tell
> >> me whether the pigs are in the mud or in the grass."
> >> "Neither," yelled his wife. "They're in the station wagon and
> >> one of them is honking the horn."
Thanks Margaret W.