When using proper technique while pinning your opponent the crank should slip into an orifice causing a sudden release, but I would hardly call this sex. There are no girls involved. You must be doing it wrong. My buddies and I just call it rastlin. Lube helps with the correct procedure of course. It takes lots of practice to get it just right. Remember there will be fluid transferred from the crank when done properly. Stop by sometime Notsince1985, and we can practice on your technique in the down position. I'm guessing you are a Bears fan, so I'll show you the beardown.