An experiment on penile research is currently underway. She was in a cowgirl position, twisting her hips, but was violently penetrated from below, experiencing an instant orgasm. They also violently twisted each other in a reverse cowgirl position. Even when she orgasmed from upward thrusting, she continued piston-like thrusting. In the missionary position, she deeply inserted her penis into her vagina, experiencing a simultaneous orgasm. She even rubbed the glans, causing it to ejaculate. (Minami Kojima) | missav.run