In our cramped gaming room, my stepsis and I indulge in our forbidden fantasy. She's dressed in fishnets, her tiny tits heaving as she climbs onto me, riding me cowgirl-style. Her fishnet-clad ass grinds against me, her wet pussy sliding up and down my cock. I grip her hips, slamming into her, our bodies slapping together in a rough rhythm. She leans back, her head lolling as she moans loudly, her hair cascading down her back. I can't hold back, pulling out and coating her tits in my hot cum.