Thick-legged older sister straddles the younger stepbrother on that same couch you’ve seen a thousand times. Pants pooled around his ankles, cock buried deep. She grinds slow at first—wrinkled pussy lips stretched wide—but then oh, she starts bouncing like she’s got springs in her hips. Tits jiggle loose, stretch marks glistening under the light as he grabs them, thumbs circling those dark nipples. Flips him onto his stomach mid-thrust: doggy style, ass up in those worn-out panties, legs spread wider than any twenty-year-old could manage. Then—fuck—she turns back around and takes it raw from behind while he screams into the cushions.