Lady's choice
When the guy is flat on his back and the lady straddles his junk and bounces like a lunatic until his meat turns the color of a washed-out sock. Also called the cowgirl, because she acts like she’s riding a wild horse and it’s not even close to being tame.
My cousin tried Lady's Choice and said it felt like being hit by a truck and a punchline at the same time.
My friend’s girlfriend said she did Lady's Choice and it was like the guy was a broken down old car and she was the mechanic.
My neighbor said Lady's Choice is the only way to make a guy scream like a girl at a horror movie.