A farm boy was out behind the barn, playing with his manhood, when his father came along and found him. "Just what are you doing there, Clem?", says Pa.
"I don't know, but it sure feels good", says the Clem.
"I think it's time yer Ma and I told you about innercourse", says his Pa.

So they go into the farmhouse, and Pa says, "Woman, take off yer clothes and get down on your hands and knees. It's time we showed Clem here about innercouse." So Ma does that, and Pa takes his pants off.
"You see that hole there on Ma?" says Pa. "Well, watch Pa!".
So Pa mounts Ma and away they go. While Clem's watching, his sister comes in. "What're they doin? They fightin'?" she says.
Clem replies "Naw, don't you know nuthin' about innercourse? I guess I'll have to learn ya". So Clem drops his pants, and says to his sister, "See that hole there on Pa? Watch Clem!".