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Obsidian Obsession

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While having a beer at the local brewery, you're confronted by a goth egirl futanari with a *monstrous* cock, easily 16 inches long and 14 inches in girth while soft. Your girlfriend notices the long, thick bulge snaking its way past the futa's knee and can't resist, sparking a conversation in which your girlfriend shamelessly flirts with the futa right in front of you. The futa loves humiliating you in front of your long-time girlfriend.

Chapter 4: Home Invasion

The five-block walk to the apartment was a silent, surreal procession. Rachel moved like a sleepwalker, every step sending a fresh trickle of Abbi’s release down the inside of her thigh, a cool, shocking reminder against the night air. She didn’t bother to clean up; the mess was part of the transaction. Abbi ambled beside her, the worn backpack slung over one shoulder, her presence an embodied disruption of the quiet residential street. She smoked a hand-rolled cigarette, the ember glowing like a Cyclops eye in the dark, her free hand occasionally adjusting the undeniable weight in her sweatpants. She didn’t speak, only observed the neat lawns and curtained windows with a detached, anthropological sneer.

Unlocking the door felt like breaking a seal. The familiar scent of their home—lemon cleaner, Ryan’s faint, comforting odor of coffee and wool, the ghost of last night’s pasta—washed over Rachel. For a moment, it was overwhelming, a sensory memory of a life now completely foreign. She stepped inside, Abbi following without invitation.

Abbi dumped her backpack by the door with a thud. She looked around the living room, her gaze taking in Ryan’s gaming chair, Rachel’s discarded knitting on the sofa, the framed photos on the bookshelf. Her lip curled. “Cozy,” she said, the word a synonym for pathetic. “Which way to the prize?”

“Here,” Rachel whispered, leading her down the short hall to the bedroom. She flipped the light switch. Her and Ryan’s bed, with its floral duvet and matching pillows, looked absurdly innocent.

Abbi grunted in approval. She peeled off her grimy sweatshirt and sweatpants, letting them pool on the floor. Naked again, she looked even more monumental in the sterile, overhead light. She flopped onto the bed, the springs groaning in protest under her weight. She lay back against the pillows Rachel had chosen with Ryan, making the space instantly, irrevocably hers. Her cock, semi-soft, lay across her thigh like a sleeping anaconda.

“Come here,” Abbi said, her voice a low command. “It went cold on the walk. Warm it up.”

Rachel obeyed, her movements automatic. She crawled onto the bed, the familiar fabric now a stranger under her knees. She lowered her head between Abbi’s spread legs. The musky, primal scent filled her nostrils. Up close, the sheer scale was dizzying. She took the flaccid head into her mouth. It was a futile gesture; even soft, it was too much to take past her lips. She licked and suckled at the tip, tasting her own slickness and Abbi’s distinct, salty tang.

“Use your hands, too. Get the blood moving,” Abbi instructed, her eyes closed, a look of deep concentration settling on her face.

Rachel worked, one hand stroking the thick base, the other massiving the heavy sac beneath, her mouth busy at the crown. She watched, hypnotized, as the flesh began to stir. It was like watching a bridge being raised. The soft tissue hardened, thickened, lengthened. Veins swelled and branched like tributaries on a map. Within minutes, it was fully erect, a true monolith straining upward from Abbi’s pelvis, the head brushing her own sternum. Its girth blotted out the light from the bedside lamp.

“Good girl,” Abbi breathed, her eyes opening, now dark with arousal. She grasped Rachel by her hair, not gently. “Now ride it. I want to watch that pretty, ruined face while you try to fit this inside you.”

Rachel straddled her, positioning herself over the obscene pillar. Even guiding it with her hand, the task seemed impossible. She lowered herself, the massive crown pushing insistently at her swollen, overused entrance. She bore down, a grunt tearing from her throat.

Abbi’s grip on her hair tightened. “Fuck, yes. That’s it. Take your medicine.”

The slow, excruciating impalement began anew. This position allowed a deeper, more controlled descent, and Rachel felt every millimeter of stretch, every internal fold being flattened. She sank down, a low, continuous moan escaping her as she was speared open in her own bed, above the floral duvet she and Ryan had picked out at a department store sale.

The key turned in the front door lock at 12:47 AM.

Ryan had cut the team dinner short, pleading a migraine. The truth was a hollow, sick feeling he couldn’t name. He’d stared at his phone all night, no messages from Rachel. The apartment’s silence when he’d left had felt like a judgment. He thought maybe if he came home, if he just saw her sleeping, some normalcy could be recaptured. A foolish, desperate hope.

The smell hit him first as he closed the door. Not just sex—that was a sharp, animal musk that was utterly alien. Under it was the faint, sour scent of unwashed clothes and body, of concrete and cigarettes. It was the smell of an intruder.

His heart began a slow, heavy thud against his ribs. The living room was empty. A strange, stained backpack lay by the door. A cold dread, precise and liquid, poured into his stomach.

A sound came from down the hall. From their bedroom. A rhythmic, wet slapping. A low, guttural groan that was not Rachel’s. And beneath it, a choked, sobbing keen that was.

He moved as if through thick mud. Each step amplified the sounds. The slap of flesh. The creak of their bedframe pushed to a frantic tempo. A woman’s voice, rough and triumphant: “Yeah, you fucking love it, don’t you? Tell me you love it, you spoiled little cunt.”

Ryan stopped in the doorway.

The scene imprinted itself on his mind with a flashbulb’s horrible clarity. The overhead light was blinding. A woman—a giantess with wild, matted hair and a feral look—lay sprawled across his bed, her hands gripping Rachel’s hips. And Rachel… Rachel was impaled upon her, bouncing up and down on a cock of such monstrous proportion it seemed a practical joke, a special effect. It stretched her open to a mouth-like oval, slick and glistening in the harsh light.

It stretched her open to a mouth-like oval, slick and glistening in the harsh light.

Ryan stood frozen, his glasses slightly askew, his mind refusing to assemble the data into a coherent reality. The physics were wrong. The anatomy was impossible. Rachel’s body, pale and shaking, was a sheath for a brutal, meaty obelisk that pistoned into her with a wet, rhythmic squelch. Her head was thrown back, blonde hair sticking to her sweaty neck, and her mouth was a perfect, soundless ‘O’ of overwhelmed sensation. Every drive upward from the woman beneath her drew a choked gasp, a soft hunh of air punched from her lungs.

Abbi saw him first. Her eyes, glazed with pleasure, flicked to the doorway and sharpened. A wide, crooked grin split her face. She didn’t stop moving, her hips continuing their relentless upward thrusts, slamming Rachel down onto her with a lewd, slapping impact.

“Well, fuck me,” Abbi said, her voice thick and husky. “Company.” She locked her arms tighter around Rachel’s waist, holding her deeply impaled. “Don’t stop, sweetheart. Daddy’s home.”

Rachel’s eyes fluttered open. They found Ryan’s. For a second, pure, unadulterated shame flashed in them—a ghost of the woman he knew. Then it was swallowed by a deeper, more physiological surrender. Her pussy clenched visibly around the invading girth, a betraying spasm of pleasure she couldn’t control.

Ryan’s feet moved without his permission. The door was already open. He took one step inside, then another, his sneakers whispering on the carpet. He couldn’t look at Rachel’s face anymore. His entire world telescoped down to the point where their bodies joined. The cock. It was the colour of raw clay, a network of throbbing purple veins weaving a topographic map across its surface. Droplets of Rachel’s arousal mixed with precum seeped from her stretched entrance, making a slick, shiny mess of the shaft with every punishing stroke.

Abbi watched his approach, amused. She gave a particularly hard upward buck, making Rachel cry out. “He’s a quiet one, ain’t he?” she said to Rachel, then looked back at Ryan. “You getting a good look? Never seen a real cock before, have you, buddy?”

Ryan stopped a few feet from the bed. His own breath felt shallow. He was staring, openly staring, his mind trying and failing to catalog the dimensions. It was thicker than Rachel’s thigh. Its length disappeared deep inside her, but what was visible was grotesquely impressive, a monstrous biological instrument.

“Cat got your tongue?” Abbi taunted. She slowed her movements to a slow, grinding roll, ensuring Rachel felt every ridge and vein. “Or you just like watching? Lots of guys do, I hear.”

Ryan found his voice, a dry croak. “Rachel…”

“She’s busy,” Abbi interrupted, her tone flat. Then her grin returned, wicked and knowing. “You’re measuring it with your eyes right now.I can tell. You’re trying to do the math in your head.” She laughed, a short, barking sound. “It’s fucking with you. The size.”

Ryan said nothing. He was.

Abbi’s hand left Rachel’s hip and she pointed a blunt finger at the chest of drawers against the wall. “Top drawer. There’s a measuring tape in there. Rachel’s sewing kit. Get it.”

“What?” Ryan’s voice was faint.

“You heard me. Get the tape. I want numbers.” Her eyes glinted with a cruel curiosity. “I wanna know what this thing is that’s wrecking your girlfriend’s pussy. And so do you.”

Ryan moved robotically. He opened the drawer, pushing aside spools of thread and packets of needles. His fingers closed on the cold, coiled metal of the tailor’s tape. He turned back to the bed.

Abbi was still grinding slowly up into Rachel, who had buried her face in the pillow beside Abbi’s head, her body trembling with the continuous, low-grade invasion. “Come here. Measure the girth first. While it’s in her.”

Ryan approached the side of the bed. The smell was overpowering up close: sweat, sex, a dank, earthy scent from Abbi. He fumbled with the tape.

“Wrap it around,” Abbi commanded, her voice dropping to a whisper, as if sharing a secret. “Right where she’s hugging it the tightest. Let’s see what she’s trying to swallow.”

Ryan’s hands were shaking. He leaned over, the tape catching the light. He had to press close, his arm brushing against Rachel’s trembling thigh. He looped the metal tape around the slick, veined shaft just at the point where it vanished into Rachel’s body. Her cunt lips were swollen, stretched taut into a shiny pink ring. The flesh was hot, pulsing. He tightened the tape, the numbers blurring for a second before he focused.

“Well?” Abbi demanded, her hips giving a slight, impatient thrust.

Ryan read the number. His mouth went drier. “Thirty-two,” he whispered.

“Thirty-two what?”

“Inches.”

Abbi’s laugh was a low rumble. “Around. Jesus.” She looked down at Rachel’s head. “You hear that, princess? Thirty-two inches of dick stretching that little hole wide open.” Rachel moaned into the pillow, a sound of abject submission. Abbi looked back at Ryan. “Now the length. Pull it out.”

Ryan hesitated. He just stared.

“Do it,” Abbi said, her voice hardening. “Grab it and pull it out of her. Then measure it.”

His hand moved as if disconnected. He wrapped his fingers around the shaft. The heat was shocking. The skin was like hot, corded velvet over steel. He felt the immense, solid weight of it. He gave a tentative tug. It didn’t move, buried too deep, held by suction and sheer tightness.

“Harder,” Abbi said, her own hand coming up to cover his, guiding him. “It’s not gonna break. Pull your girl off my dick.”

He pulled, leaning back. Rachel’s body came with it, a low, agonized whine escaping her as the massive head began to emerge from her swollen opening. It slid out with a wet, sucking pop, leaving her gaping, empty, and convulsing. Abbi’s cock, now fully free, stood obscenely upright, glistening with a thick coating of Rachel’s juices.

“Measure,” Abbi ordered, releasing his hand.

Ryan unspooled the tape. He placed the metal end at the base, where the shaft met her pelvis, and stretched it along the throbbing, slick upper side. He followed the curve to the broad, blunt tip. The numbers ticked past the twelve, the twenty-four, the thirty-six. His own heartbeat was loud in his ears.

He reached the end. “Forty-four,” he said, the words hollow. “Forty-four inches.”

Abbi looked at her own cock, then at Rachel’s ruined, quivering entrance, then back at Ryan’s stunned face. Her smile was one of pure, victorious obscenity.

“Forty-four,” she repeated, savoring the number. She reached down and grasped her shaft, guiding the fat, wet head back to Rachel’s waiting hole. “Now you know. And so does she.” She didn’t push in immediately, just tapped the head against Rachel’s slick, puffy lips.

“Your whole arm couldn’t fuck her this deep,” Abbi murmured to Ryan, her eyes locked on his. She pressed forward, the head beginning to disappear again, stretching Rachel open anew. “This is what she needs now. You get to watch.”

Abbi’s hips snapped upwards, driving the full, measured length back into Rachel’s depths in one brutal, reclaiming stroke. Rachel screamed, her back arching off the bed, her hands clawing at the floral duvet.

Ryan stood there, the cold metal tape still hanging from his fingers, the numbers branding his mind: thirty-two, forty-four. He didn’t move. He just watched it disappear.

He just watched it disappear.

The bed became a machine of brutal, rhythmic violence. Abbi fucked up into Rachel with a piston’s raw, mechanical force, each thrust a calculated assault that drove the wind from Rachel’s lungs in short, punched-out gasps. The wet, meaty smack of their joining filled the room, a obscene counterpoint to the creaking protests of the bedframe. Abbi’s gaze never left Ryan’s face, her eyes holding his with a predatory fixation.

“See that, buddy?” Abbi grunted, her breath coming in heavy rasps. She anchored Rachel’s hips, controlling the entire vicious tempo. “See how deep it goes? Your little dick never kissed her cervix like this. Never punched past it.”

Rachel’s body was a frantic arc of sensation. Every neural pathway was overloaded, burned out, rewired. Her cunt, stretched and burning, convulsed around the invading girth in a continuous, involuntary series of clenches. Pleasure wasn’t a wave; it was a sustained electrical current, jolting her spine, seizing her muscles, blurring her vision. A thin, high whine leaked from her clenched teeth.

“She’s coming again,” Abbi announced, matter-of-factly, as if commenting on the weather. She snapped her hips up sharply, grinding the broad crown against Rachel’s deepest front wall. “Feel that, you spoiled bitch? That’s the real thing.”

Rachel’s body locked. A silent, gaping scream stretched her mouth as an orgasm tore through her with vicious, unrelenting intensity. Her juices gushed, adding to the slippery mess between them, the sound a sodden squelch. She went limp for a half-second, only for Abbi to resume pounding, reigniting the sensation before the last had even faded.

“And again,” Abbi taunted, watching Rachel’s eyes roll back. “Fuck, you’re easy. One good dick and you’re a fucking fountain.” She looked at Ryan, who stood paralyzed, the measuring tape dangling from his slack fingers. “You ever make her do that? Just from fucking? Or did you have to eat her out for an hour, beg for it?”

Ryan’s mouth moved but no sound came out. The numbers echoed in his skull: thirty-two, forty-four. They were measurements of his irrelevance.

Abbi shifted her grip, rolling them both with shocking ease until Rachel was pinned beneath her, dwarfed by her bulk. She wrapped a powerful hand around Rachel’s throat, not squeezing, just holding. The domination was absolute. She pulled her hips back until only the tip remained inside, a taunting reminder of the girth, then slammed home.

The impact shook the entire bed. Rachel’s cry was strangled, ecstatic.

“Tell him,” Abbi growled, her face inches from Rachel’s, her breath hot. “Tell your boyfriend what my cock feels like.”

Rachel’s words were torn from her between gasps. “It’s… it’s so… full.”

“Full?” Abbi barked a laugh and pistoned into her, hard. “It’s destroying you. It’s rewriting your guts. Your little boyfriend’s dick is a memory. A fucking ghost.” She punctuated each sentence with a devastating thrust. “This… is… all… you… need.”

The orgasms became a cascade, one blurring into the next, a perpetual quaking in her core. Rational thought dissolved into pure, screaming sensation. The ownership in Abbi’s grip, the completeness of the invasion, the humiliating audience—it all fused into a dark, addictive fuel.

“I need…” Rachel sobbed, the words bursting forth without consent from her conscious mind, a raw truth pulled from her wrecked core. “I need you to move in and fuck me all the time, all day every day!”

The silence that followed was profound, broken only by the wet sounds of Abbi’s relentless thrusting and Rachel’s ragged weeping. Abbi’s triumphant grin was a gash across her face. She looked over Rachel’s heaving shoulder at Ryan.

“Hear that?” Abbi said, her voice a low, victorious rasp. She never slowed her pace. “That’s your eviction notice.”

Ryan felt the words like physical blows. They emptied him. He watched the monster he had measured pound into the woman he loved, claiming not just her body but her very will. Rachel’s plea hung in the air, a final, grotesque surrender.

Abbi fucked her harder, deeper, as if sealing a contract. Ryan saw the reality of his future in the violent, rhythmic collision of their bodies: he was a ghost already, standing in his own bedroom, holding a measuring tape that had quantified his own obsolescence.

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