Similar to the act of 'swaffling', except the motion of the penis is of a circular orientation, such as that of the blades of a helicopter, rather than side-to-side.
Mate, Charlie gave Jan such a brutal swafflecopter last night, I could see the bruises this morning!
You're such a swafflecopter.
You're such a swafflecopter.
by Cumnuggetz April 19, 2011