I went to visit my cousin on the farm. Well, as young lads will, we
started talking about sex. Sex on the farm. That's when he told me 
about the pigs. I was horny, but I just didn't know. Pigs?! 
It didn't take too much effort on his part to get me to agree to a try.
Off to the pig pen we went. Well, in no time at all, he was humping away
on his choice. 
I, however, was having a problem. 
"Hey, Lem, I can't get a hard-on." 
He turned, looked at me, then at my pig. 
"No wonder dummy. You picked an ugly one"