A farmer had a dozen pigs that couldn't get pregnant, so he brings them to the vet, he examines them and tells the farmer that he'll have to do the deed himself..Very puzzled but also desperate, the farmer agrees. The vet said that the morning after if the pigs are lying in the sun, they are not pregnant, if they are rolling in the mud then they are indeed pregnant. So being a little embarrassed about he whole situation he decides to do the deed way up in the woods where nobody could possibly see him, so he loads all the pigs up in his pick-up and heads to the hills. He tries and tries for days on end to no avail every morning the pigs are lying in the sun..not pregnant.. so even more desperate, he brings the pigs back to the vet for another examination..the vet unsure of why he's not getting the results asks the farmer if he's doing it long enough and with enough "romance" .. the farmer very confused replies "I'm just doing it" so the vet convinces the farmer to give it one more shot doing it longer with a little more "romance", the farmer agrees and heads to the woods..The next morning the old boy is a little tired from doing the deed to all these pigs, and asks his wife to look out the window to see what the pigs are doing..she looks out the window and exclaims "oh my" the farmer raises up in bed and asks excitedly "they are rolling in the mud?" his wife says "no" .. he then lies back down and replies "then they are lying in the sun not pregnant AGAIN" .. his wife replies "no"..the farmer frustrated at this time, snaps at her "what the hell are they doing then?" she says "they are all in the back of your pick-up and one is blowing the horn"