The farmer was disturbed when …

The farmer was disturbed when he found out his son, Little Johnny, was masturbating several times a day out in the barn.
“Boy, you gotta quit that! Go out and git yo’self a wife.”
So Little Johnny went out and found himself a pretty young girl, to whom he got married. But a week or so after the wedding, the farmer found Little Johnny choking the chicken again.
“You crazy boy!!” he yelled, “That Elli-Mae’s a fine young gal!!”
“I know Paw,” Little Johnny replied, “but her arm gits tired sometimes!”