The Rodeo
A cowboy walks into a bar and sits next to another guy. They soon get into a deep discussion about their sex lives and after a few the cowboy asks the other dude, "Have you ever heard of the Rodeo Position?" The other man said he hadn't so the cowboy continued in saying "Well, you mount your wife from behind, cup her breasts firmly, and say'Hey,these are almost as good as your sister's. See if you can stay on for 8 seconds."