Cement Mixer

When a man slides his erect penis inside a woman's vagina to full length and begins to rotate his hips in a 360 degree circle, essentially stirring the juices inside her. Centrifugal force causes the penis to shift in in the opposite direction of the rotation. This is best done without a condom however, as the centrifugal friction may cause the condom to shift and/or break. You've been warned!

I attempted the "cement mixer" whilst my lady was cumming and she flooded the bed! Thank god the sheets weren't high thread count!!