driving a car with hubcaps that keep spinning long after the car has stopped, unless you got them at walmart, in which case they stop shortly after the car stops.
dude 1: check out that sweet Escalade, he's ridin spinnaz!
dude 2 (deep voice): they don't stop!
dude 1: check out that '93 dodge caravan, he's ridin spinnaz!
dude 2: I missed it!
A term used in gay pornography. "Riding" refers anal compulation. "Spinnas" refers to the movement of the recieving gay man's penis. Due to centripical force, up and downthrusting causes the shaft to cycle in a clockwise patter.