This is a sexual maneuver that can only be accomplished with a woman missing both legs. The legless woman will be on top in the traditional front facing cowgirl stance. The man will then use his arms to spin the woman quickly while still maintinaing her up and down motion. This can be accmplished due her decreased body weight. If balance is an issue, the man can stand over the woman with the top of her head on the ground for stability. Her body can then be spun in a similar manner.
Some trick asked me if I would rather have sex with a woman with no arms and no legs, I told her "Obviously I would choose the woman with no legs! I could employ the kurtzman."