The Deaf Couple
A guy is driving out in the middle of nowhere, very lost. Finally he spots 2 houses so he goes up to the first house and looks in the door way. He sees an old lady yanking on her boobs and an old man jerking off.

He is so freaked out that he goes to the next house and says "What's up with your neighbors?" and the owner of the house says "Oh that’s the Robinson’s, they're both deaf. She's telling him to go milk the cow and he's telling her to go fuck herself!"