My big ass stepsister seduces me while we watch movies

The room was dimly lit, the only glow coming from the flickering movie on the screen. My big-ass stepsister, sprawled out on the couch, shifted her weight, causing the cushions to sink beneath her generous curves. She wore a tiny pink nightie that struggled to contain her massive tits and thunderous ass. I could feel my cock stiffening as she casually rubbed her thick thighs together, her dark skin contrasting with the pale fabric. She glanced at me, her eyes lingering on the bulge in my pants. “You like what you see, little brother?” she purred, her voice a low rumble. She didn’t wait for an answer, just hoisted her massive body up and straddled me, her wet pussy pressing against my growing hardness. She ground against me, her massive ass bouncing with each movement, the nightie riding up to reveal her glistening cunt. I could feel her heat, her wetness seeping through my pants. She leaned down, her massive tits smothering me, her breath hot in my ear. “I knew you wanted this big, black ass,” she whispered, her voice dripping with lust. She reached down, unzipped my pants, and freed my cock, her thick fingers wrapping around my shaft. She lifted her hips, positioned herself, and slowly impaled herself on my cock, her massive ass enveloping me, her walls clenching around my shaft.

Her eyes rolled back, a low moan escaping her lips as she began to ride me, her massive body bouncing up and down, her tits jiggling with each movement. The couch creaked beneath her weight, the springs protesting as she fucked me, her thick thighs squeezing my hips, her massive ass slapping against my skin. She leaned down, her massive tits pressing against my chest, her lips finding mine in a fierce kiss. Her tongue invaded my mouth, her fingers digging into my skin. She broke the kiss, her eyes locking with mine, her voice a low growl. “Fuck me, little brother. Fuck this big, black ass.” She lifted her hips, giving me room to move. I thrust upwards, my cock sinking deeper into her wet cunt, her walls rippling around my shaft. She moaned, her body shaking with pleasure, her massive tits bouncing wildly. She rode me harder, faster, her body slamming against mine, her massive ass a blur of motion. I could feel my orgasm building, my cock throbbing inside her. She sensed it, her voice a command. “Cum for me, little brother. Cum inside this big, black ass.” I obedience, my cock pulsing, my cum filling her, her walls milking me dry. She collapsed on top of me, her massive body pressing me into the couch, her breath ragged, her skin glistening with sweat. She lifted her head, a satisfied smile on her face. “Good boy,” she purred, before rolling off me, her massive body shaking the couch. She lay next to me, her hand reaching out to stroke my cheek. “That was fun,” she said, her voice soft. “We should do it again sometime.”