Put more power into the spin cycle. She opens her legs as wide as she comfortably can, while sitting on the washer/dryer. He holds on to her hips, enters her, and thrusts vigorously. Her wide angle facilitates G-spot stimulation, and, of course, her hands are free to stimulate her clitoris.
Tantric bonus: intense eye contact in this face-to-face position.
Simple? Yes. But opening those legs wider makes a big difference.
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