"Actress From Hollywood" joke

One day, an actress from Hollywood was driving her Eldorado Cadillac through the backroads of Georgia when she spotted two young guys out in a field plowing. Being very horney, she immediately pulled her car over onto a dirt road and motioned for the two guys to come to her.
Once they arrived at her car, she asked them, "How are you boys doing today?"
"Fine, ma'am," they replied, "Just fine, thanks. Can we help you with something?"
She then informed them that she was indeed feeling very amourous and asked if they thought they could help her out.
"Oh yes, ma'am!" they both exclaimed, looking excited at this proposition.
"Good," she then said. "One of you go ahead and get in the backseat of my car and we'll get started."
So, the first guy got into the backseat of her Cadillac and proceeded to begin when all of a sudden she stopped and said, "Here, put this on."
"What is it?" he asked perplexed.
"It's a rubber," she explained. "It's to keep you from catching any disease."
So he put the rubber on and went to work. Afterwards, the second guy entered the car and did the same thing. Once again, before any action took place, she explained the neccessity of the rubber and he did like his buddy and put it on.
Well, after having these two guys one after the other, this Hollywood actress left the field in Georgia with a satisfied smile on her face.
Two days later, the same two guys are out in the field plowing again when one of them says to the other, "Zeb, do you feel like you catchin' any disease?"
Zeb looks at his friend and answers, "Not that I can recollect."
The first guy then asks him, "Well, do you think then it'll be okay if we take these things off? I gotta piss."