Stepmom's Curvy Ass Tempts Her Hung Step-Son

Stepmom's Curvy Ass Tempts Her Hung Step-Son

I was nineteen, freshly home from my first year of college, and already losing my mind.

Vanessa, my stepmom, had always been a walking wet dream, but that summer she seemed determined to break me. At thirty-eight she had the kind of body that made men stupid: huge, heavy tits, a narrow waist, and an absolutely massive, heart-shaped ass that jiggled and swayed with every step. She knew it too. Around the house she lived in the tightest yoga pants imaginable, the kind that disappeared between her thick cheeks and left the twin globes of her rear bouncing like they were trying to hypnotize anyone who looked. Tiny athletic shorts were even worse; the fabric barely covered half her ass, and the constant sight of her thong lines digging into all that soft, tanned flesh kept my cock in a permanent state of aching hardness.

My stepdad worked long hours at the firm, often gone before I woke up and home long after dark. My eighteen-year-old stepsister, Kayla, was rarely around either, always out with her friends or her new boyfriend. That left me and Vanessa alone for hours every day, and she made sure I suffered.

I tried to be good. I really did. But every time she bent over to load the dishwasher, or dropped into a deep squat while pretending to look for something on the bottom shelf, her enormous ass would stretch the thin material until I could see the outline of her pussy lips from behind. My dick would throb so hard it hurt, leaking into my boxers while I stared like a perverted idiot.

The breaking point came on a humid Tuesday afternoon.

I was sprawled on the couch pretending to scroll through my phone when Vanessa walked into the living room in black seamless yoga pants that looked painted on. She put on one of her workout playlists, gave me a sweet little smile, and started doing squats right in the middle of the room. Slow, deep, perfect squats. Every time she dropped down, her massive ass cheeks spread and the seam of her pants vanished completely between them. When she rose, those two fat globes clapped together with a soft, fleshy sound that made my balls tighten.

I couldn’t look away. My cock was rock-hard, tenting my gray sweatpants obscenely. I was so mesmerized by the way her ass rippled and bounced that I didn’t even notice she had turned her head and caught me.

Instead of getting mad, Vanessa’s full lips curled into a wicked smile.

“Baby… you’ve been staring at my ass all summer,” she purred, voice low and husky. She stayed in a low squat, back arched dramatically, and gave her hips a slow, deliberate roll. The motion made her cheeks bounce and jiggle hypnotically. “Think I didn’t notice?”

My mouth went dry. “I—I’m sorry—”

“Don’t be.” She rose, turned to face me, and then bent forward slightly, hands on her knees, pushing her ass out toward me like an offering. “I’ve been doing this on purpose. Every tight pair of pants, every time I ‘accidentally’ drop something and have to bend over… I knew exactly what I was doing to you.”

She reached back with both hands and slowly spread her cheeks through the thin fabric, the seam pulling tight over the pucker of her asshole and the swollen lips of her cunt. I could see a growing wet spot darkening the material.

“I saw you last month,” she confessed, eyes gleaming. “Door was cracked. You were in your room jerking that massive fucking cock. God, the size of it… your father hasn’t been able to make me cum properly in years. But you… that huge, thick dick of yours has been driving me insane.”

She started twerking. Slow, filthy bounces that made her enormous ass ripple and clap. The sound filled the living room. My cock jerked hard in my sweats, a wet spot blooming at the tip.

“I want it,” she whispered. “I want my step-son’s huge cock stretching me open. Tell me you want to fuck me, baby. Say it.”

The last of my resistance snapped.

“I want to fuck you,” I growled, voice rough. “I want to bury my dick in that fat ass every single day you tease me with it.”

Vanessa moaned like I’d already touched her. She dropped to her knees between my spread thighs, yanking my sweats down in one hungry motion. My cock sprang free, thick, veiny, and almost ten inches long, the head already shiny with pre-cum. Her eyes widened with pure lust.

“Fuck, it’s even bigger up close,” she breathed, then opened her mouth and took me straight down her throat.

The wet heat of her mouth was obscene. She gagged herself on my length, saliva pouring down my shaft as she forced more and more of me past her tight throat. I grabbed a fistful of her dark hair and started fucking her face, hips snapping upward while she slurped and moaned around me. Thick strings of spit connected her lips to my balls every time she pulled back for air. Her mascara ran. She looked like a complete slut and I had never been harder.

“Such a good little stepmom,” I groaned, slapping my heavy cock against her tongue. “Sucking your step-son’s dick like you were born for it.”

She pulled off with a wet pop, strings of saliva dripping from her chin onto her heaving tits. “I need it inside me. Now.”

I didn’t wait. I stood, spun her around, and bent her over the back of the couch. Those skin-tight yoga pants were shredded down the middle in seconds. Her huge ass spilled out, pale and perfect, the tiny black thong soaked and stretched between her cheeks. I ripped the thong aside and slammed my cock into her dripping pussy in one brutal thrust.

Vanessa screamed in pleasure, back arching hard. “Yes! Fuck your stepmom’s cunt!”

I pounded her mercilessly, hips slapping against her fat ass with loud, wet smacks. Every thrust made her cheeks ripple like jelly. I spanked her hard, watching my handprints bloom pink on all that soft flesh, then gripped both cheeks and spread them wide so I could watch my thick cock disappear into her tight, pink hole over and over again. Her pussy was molten, gripping me like a velvet fist, gushing down my balls with every stroke.

We didn’t even make it to the bedroom at first. I fucked her like that for long minutes, railing her over the couch until her legs shook. Only then did I pull out, drag her upstairs by the hair, and throw her onto my bed.

Vanessa immediately climbed on top of me in reverse cowgirl. She reached back, spread her own ass, and sank down onto my cock again, moaning like a whore as every inch stretched her. The view was insane. Her massive ass bounced and clapped as she rode me, the fat cheeks rippling hypnotically while my dick speared up into her soaked pussy again and again. I gripped her hips and thrust up to meet her, watching the way her asshole winked every time she bottomed out.

“God, your ass is perfect,” I groaned, slapping it hard. “I’m going to fuck it soon. You know that, right?”

“Yes,” she gasped, grinding down harder. “Whenever you want. My holes are yours now, baby.”

I couldn’t hold back anymore. I flipped her onto her stomach, pressed her down into the mattress in pronebone, and drove into her with savage force. The position let me pin her completely, my much larger body covering hers while I hammered that dripping cunt. Her huge ass cushioned every brutal thrust, cheeks spread around my pistoning shaft. Vanessa was screaming my name into the pillow, fingers clawing the sheets as her pussy spasmed and squirted around me.

“Cum in me,” she begged, voice hoarse. “Fill your stepmom up. Please—”

I buried myself to the hilt and exploded. Thick, heavy ropes of cum pumped deep into her womb, pulse after pulse until it was leaking out around my cock and soaking the sheets. Vanessa came with me, her whole body shaking, asshole fluttering visibly as her orgasm ripped through her.

For a long moment we just panted together, my cock still buried inside her, my chest pressed to her back. I kissed the side of her neck, tasting sweat.

Vanessa turned her head, found my mouth, and kissed me slow and deep, tongue sliding against mine like she was claiming me.

“This is our dirty little secret,” she whispered against my lips, voice husky and satisfied. “Every single time your father and Kayla are out of the house, this pussy and this fat ass belong to you. I’ll keep teasing you, baby. Even sluttier outfits. Shorter shorts. No panties. I’ll bend over in front of you every chance I get until you can’t take it anymore and bend me over wherever we are.”

She squeezed her pussy around my softening cock, milking the last drops of cum from me.

“Our taboo little step-family affair is only just beginning—”

The front door downstairs suddenly slammed shut.

“Mom? I’m home early! Whose car is in the driveway?”

Kayla’s voice rang up the stairs, bright and unsuspecting.

Vanessa’s eyes went wide. My cock was still buried balls-deep inside her cum-filled pussy, and we both froze as we heard my stepsister’s footsteps coming up the stairs.