Your wife's soft whimpers echo as she rides your friend, her back arched, breasts bouncing. He grips her hips, thrusting upwards, meeting her rhythm. You watch, a voyeur in your own home, as she orgasms, her body convulsing. Your friend follows, groaning, filling her with his hot seed. They collapse, panting, and she looks at you, her eyes filled with a desire for more, for you to finally join them in their illicit dance.