Funny Redneck Joke

Two rednecks were sitting in a bar discussing their favorite sex positions. One of them says, "I think rodeo would have to my favorite". The other one says, "I've never heard of that one, what is it?" So the first guy says, "You sit on your wife's back with your hands on her boobs and say, 'these feel just like your sister's' and then you have to try and stay on for 8 seconds".