Brother's Cum Dumps
by Thomas Spencer
Copyright© 2025 by Thomas Spencer
Incest Sex Story: Liam's return home triggers a passion explosion between him, his beautiful sisters Sarah and Emily. As he strokes his thick cock, they catch him in the act, leading to a wild, incestuous threesome filled with spanking, deep anal and pussy pounding. The siblings discover a new level of love as they explore each other's bodies, eagerly indulging their deepest desires.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa mt/ft Ma/ft Ma Fa mt ft Mult Teenagers Consensual Reluctant Romantic Lesbian BiSexual Heterosexual Fiction Incest Brother Sister Humiliation Rough Spanking Group Sex Orgy Polygamy/Polyamory Cream Pie Facial Masturbation Oral Sex Voyeurism .
The warm glow of the setting sun bathed the household in a tranquil amber hue as Liam stepped through the front door, his duffel bag slung over one shoulder. The sweet aroma of freshly baked apple pie wafted from the kitchen, carrying him back to childhood memories in an instant. It had been three long years since he’d last set foot in this house, having spent that time away at boarding school. But now, at last, he was home.
“Liam? Is that you?” his sister Sarah called out from the living room, a tinge of disbelief coloring her voice. She emerged a moment later, her auburn hair falling in loose waves around her face. At 24, she’d blossomed into a true beauty, with full lips and emerald eyes that seemed to sparkle with mischief.
“Yes, it’s me,” Liam replied, flashing her a grin. “It’s good to be back.” He pulled her into a tight embrace, relishing the warmth of her slender body against his. Sarah melted into his arms, her head coming to rest on his shoulder.
As if on cue, their other sister, Emily, came bounding down the stairs, her lithe figure barely contained by a pair of tight shorts and a thin tank top. At 20, she was the epitome of youthful vitality, her skin glowing and her eyes bright with excitement.
“Liam!” she squealed, leaping into his arms. He caught her easily, spinning her around as they laughed together. For a moment, it was as if no time had passed at all.
The trio settled into the living room, chatting and catching up on lost time. As the evening wore on, Liam found his gaze wandering over his sisters’ bodies, taking in their newfound curves and the tantalizing glimpses of smooth skin. He tried to shake off the thoughts, but they persisted, fueled by the Headmaster’s Naughty List he’d snuck in during the summer that kept on playing in his mind. He wondered if his sisters had discovered it.
After dinner, Liam retreated to his old bedroom, exhausted from the long journey. As he lay on his bed, his mind drifted back to Sarah and Emily, their laughter echoing in his ears. He couldn’t help but imagine them in more intimate scenarios, their bodies entwined in ways that made his pulse race.
Unable to resist the urge any longer, Liam reached down and began to stroke himself through his jeans, picturing Sarah’s lips wrapped around his cock as Emily watched, her fingers buried deep inside her own dripping pussy. The mental images grew more vivid with each passing second, until Liam could no longer contain himself.
With a low groan, he fished his aching cock out of his pants and began to pump it furiously, his hips bucking off the bed. He was so lost in his fantasies that he didn’t hear the soft creak of the door as it opened, nor the gasps of surprise from his sisters as they witnessed his private moment.
Sarah and Emily had been sitting in the kitchen, sipping glasses of wine and chatting about Liam’s homecoming. They were thrilled to have him back, but also a bit nervous about how things would be after so much time apart. They were still trying to figure out what kind of boy he had become.
As if on cue, a low moan drifted down the hallway from Liam’s old bedroom. The sisters exchanged startled glances, their hearts pounding in unison.
“Did you hear that?” Emily whispered, her cheeks flushing pink.
Sarah nodded, setting her glass down with a shaky hand. “It sounded like ... like...” She couldn’t bring herself to finish the sentence.
On trembling legs, they crept towards Liam’s room, their curiosity getting the better of them. The door was slightly ajar, and another groan emanated from within, followed by the rhythmic thumping of a bedsprings.
Biting their lips, the sisters pushed the door open just enough to peek inside. What they saw made their jaws drop in unison.
There, illuminated by the soft glow of a bedside lamp, was Liam. He was sprawled out on the bed, his jeans pushed down to his knees and his hand wrapped around his rock-hard cock. His head was thrown back in ecstasy, his chest rising and falling rapidly with each labored breath.
Sarah and Emily stood frozen, their eyes glued to the scene before them. They had never seen anything so intimate, so raw and primal. Liam’s cock was thicker and longer than they had ever imagined, the tip glistening with precum as he stroked it with increasing urgency.
Emily let out a small whimper, her own body responding to the sight with a surge of heat between her thighs. She pressed her hand against her crotch, feeling the dampness seeping through her shorts.
Sarah felt a similar rush of arousal, but also a twinge of guilt. This was their little brother, after all. But as she watched him lost in the throes of pleasure, she couldn’t help but feel a deep longing, an ache for his touch that shook her to her core.
Unable to tear their eyes away, the sisters continued to watch as Liam neared his climax. His strokes became faster and more forceful, his balls drawing up tight against his body. With a final strangled cry, he came hard, his hot seed spurting out over his fist and onto his stomach.
The sight was too much for Emily to bear. Without thinking, she shoved the door open and stormed into the room, her face flushed with desire.
“Liam,” she panted, “what the hell are you doing?”
Liam’s eyes flew open in shock, his hand still wrapped around his spent cock. He stared at his sister in disbelief, his heart hammering against his ribcage.
“I ... I thought...” he stammered, unable to find the words.
Sarah followed Emily into the room, her own desire warring with her sense of propriety. “Em, we shouldn’t be here,” she said weakly, even as her eyes roamed over Liam’s naked body.
But Emily was having none of it. She strode over to the bed and climbed on top of Liam, straddling his hips with a wicked grin. “I want this,” she declared, grinding her crotch against his softening cock. “I want you.”
Liam’s eyes widened in shock, but he made no move to push her away. Instead, he reached up and cupped her breasts in his hands, kneading the soft flesh and tweaking her nipples through the thin fabric of her tank top.
Sarah watched in awe as Emily began to writhe against Liam, her hips undulating in a slow, sensual dance. The sight was intoxicating, and she found herself moving closer to the bed, drawn in by the magnetic pull of her siblings’ passion.
Sarah watched in awe as Emily ground herself against Liam’s crotch, her thin shorts offering little barrier between them. She could see the outline of his hardening cock through the fabric, and it made her mouth water with desire. Without thinking, she climbed onto the bed and began to kiss along Emily’s neck and shoulders, nipping at her sensitive skin.
Emily gasped at the sensation, her head falling back to give Sarah better access. Her hips continued their rhythm, rubbing herself against Liam with increasing urgency.
“Fuck, that feels good,” Liam groaned, his hands roaming over Emily’s body. He squeezed her ass through her shorts, pulling her harder against him.
Sarah couldn’t stand it any longer. She needed to feel Liam’s cock inside her, needed to know what it was like to be filled by her own brother. Reaching down, she fumbled with his jeans, tugging them down just enough to free his stiff member.
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