stepbrother grinding & cums on yoga pants stepsister with penetration

The young, nubile certain was lounging on the living room couch in her tight, glossy yoga pants, completely unaware her stepbrother was secretly eying her from behind a book he pretended to read. Her platinum blonde hair spilled over the couch cushions while she absently scrolled through her phone, legs crossed making the stretchy, shiny material tightly cling to her thick thighs and round, jutting ass. The stepbrother noisily turned another page, his large cock already straining against his jeans at the tempting sight of her.

He watched as she uncrossed her legs and swung them over the side of the couch, heels scuffling against the carpet. The yoga pants rode up, emphasizing the camel-toe bulge between her legs and the way the fabric creased between her firm ass cheeks. He stared shamelessly, eventually letting out a soft grunt.

The girl glanced up from her phone, sapphire eyes narrowing. “What are you looking at?”

“Nothing,” he said, cheeks heating. “Just…how tight those pants are on you.” His voice wavered.

She glanced down at herself, treatment arms spreading to examine the way the blue fabric was straining over her curves. “Yeah, I can’t wear them every day, they show everything, but they’re so comfy around the house…” Her words drifted off as she saw his obvious erection tenting his pants. Eyebrows lifted. “Oooh, someone is excited. It that for me?”

He swallowed hard, pulse racing. “I can’t help it, you look…fucking hot.”

She smiled sweetly. “Well, I better go change then,” she teased, standing up in one fluid motion. The artificial material clung to every strap of her body, from her shapely legs to her narrow waist to her large, heavy breasts. She took a few steps towards the hallway before stopping and bending over dramatically to pick up her phone. Her round ass was right in the stepbrother’s face, the pants so tight every puckered crevice was visible.

“Or maybe…” she said thoughtfully, straightening up slowly. “You just wanna see me work this big ass on your cock?” She turned around and boldly cupped her hands under her asscheeks, squeezing them for his viewing pleasure. “Mmm-hmm. I bet you’ve been stroking yourself to thoughts of fucking this prime booty, haven’t you?”

The stepbrother was practically drooling, his cock straining against his zipper. He nodded dumbly.

Her smile turned into a wicked grin. She briefly turned her back to him again then promptly hooked her thumb under the waistband of her yoga pants and panties and started tugging them down. The round globes of her ass came into view, perfectly smooth and pale. “Grind on my ass until you cum in your pants, little bro,” she purred, bending forward again with her fat ass completely bare and hanging out of her pants “I wanna feel you throb against these phat cheeks.”

He shuffled up behind her and buried his face against her rump, motorboating the silky cheeks. “Jesus Christ, I love your ass,” he grunted, smacking a palm against it. She trembled and let out a soft moan. Without further hesitation, he shoved his hips forward and buried his covered erection against the crevice of her rear, stiff shaft riding against the creased fabric.

“Ooohh, that’s it, work your dick between my cheeks,” she urged, reaching back to squeeze her ass around him. “Rub that boner all over me as hard as you want, make my ass jiggle.” He picked up the pace, humping against her quickly, his cockhead nudging her tight hole through the pants. Pleasure mounted between his legs, the pressure building. “You gonna cum in your pants for me, baby? Hhhmm? Pump your load in your shorts like a dirty little perv?”

“F-fuck yes!” he hissed. Her writhing ass was too much to handle. A few more deep thrusts against the tight valley of her buttocks and he bucked against her, dick throbbing violently. His cock flexed and pulsed, soaking his pants with spunk as he came handsfree right there between her fat cheeks.

“Ummm, yes,” the girl hummed, grinding back on him, feeling him throb under her. “Get it, work yourself through it!” His hips jerked as the aftershocks rocked through him, until finally he slumped against her back. She straightened up and turned around to face his pants, covered with two obvious wet stains.

“Congratulations. You came in your pants like a horny schoolboy,” she giggled, patting his shoulder. “Now go clean yourself up.”

He nodded flusteredly and shuffled off towards the bathroom, leaving her alone in the living room, still hidden in her yoga pants – a big, cum-stained grin on her face.