Handglider

A little known phrase which can be slipped into common parlance without the other party necessarily knowing it to be offensive. The pastime of "Hang Gliding" is well known, the term "Hand Gliding" albeit sounding similar is a term associated with "Masturbation". "Hand Gliding" refers to your hand moving up and down the associated gentleman sausage.

would be balancing on one hand taking your other hand and lifting it off the ground and back on it and pushing making you spin. some people will put a long sleeve (or at some dances a santa hat) down so it cause less friction.