Dongcopter

Also known as the windmill. A nude male moving his hips in a way that his penis swings 360 degrees around. Its like a flesh nunchuck. For added comedic effect such as at a party or in a locker room: in your best Arnold Schwarzenegger voice you say "Get to the choppa nowwww!"

A penis with rotor blades attached, such that it is capable of flight. Typically remote-controlled and used to harass speakers at Russian political rallies.

N. When a man gyrates or moves his hips in such a way as to create a whirling motion with his penis similar to that of a helicopter. note: this is a secret maneuver of the genitals that most women are not aware of.