emilywee: I used to do something like this with an ex, although maybe not exactly what you guys are talking about. He was a huge guy in terms of build- 6'4" tall, really beefy jock type who played defense on the football team (college). I'm fairly tall for a girl- 5'7", but very small boned/thin, I weighed 107 at the time. I never "spun" on top of him like a helicopter propellor, if that's what you mean
, but we used to do this thing where he'd lay on his back, and I'd get up on top squatting/sitting on his crotch with my knees to my chest. He was so strong he could literally support me with his palms on my buttocks, and then spin me around from there.
Despite the deep penetration of this position he was average length so no prob with my cervix. It sounds odd but it was incredible, he was extremely thick, the thickest I've ever been with. I felt completely drilled and at his mercy as he would spin me clockwise and then change to counterclockwise and vice versa. At certain points during this his head would totally bear into my g-spot. Mmm, I have to go get a glass of ice water...