MA, PA, AND THE RUMP PUMP

Ma and Pa are sitting out on the front porch one day.
"You know what? Junior's 21. It's time we taught him about sex. Junior, get out here!". Junior runs out. 'Junior, I think it's time to teach you about sex."
"Sex," says Junior. "What's sex?"
"Well," Pa says. "Take off your clothes, Ma."
So Ma takes off her clothes. "You see that hole in Ma? Watch this."

The rest part of the joke you can find here :
http://jokes.cc.com/funny-blue-collar/5hfvr6/ma--pa--and-the-rump-pump

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