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The Experimental Endeavor (F)

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A woman and her girlfriend have a stale sex life and the girlfriend clearly isn't satisfied with toys for penetration; the woman decides to get a new experimental injection to grow a penis. Not only does it work, it also has other unintended side effects like breast growth. The girlfriend loves it, but wants even more.

Chapter 9: Feral Claim

The cab ride was silent, vibrating with an energy more potent than words. The driver, a squat man with a graying mustache, had stared straight ahead after a single, sharp glance in his rearview mirror. Evie had hunched into the corner, her cheek pressed against the cool, grimy glass, watching the neon smear past. Clare sat perfectly upright, one hand clamped around Evie’s thigh. Her thumb traced slow, possessive circles on the fine wool. A faint, sharp scent of come and whiskey lingered between them, a permanent now. Evie could smell Clare on her skin, a perfume of salt and submission. Her cock, spent and softening in the sticky confines of her slacks, still throbbed a low, humiliated ache.

Clare tossed a crumpled fifty through the partition, cutting off his mumbled thanks with the slam of her door. She pulled Evie across the sidewalk, past the rusted gate of their brownstone, up the three flights of cracked linoleum stairs. The keys jangled in her shaking hand, but her jaw was set, her eyes fixated on the lock. Then they were inside.

The familiar clutter of their apartment—the sagging shelves of design books, the curling concert posters, the smell of coffee grounds and old laundry—felt like a museum. A diorama of a life that had ended hours ago. The silence of the rooms swallowed the echoes of the bar’s music, the murmuring crowd, the security guard’s flat dismissal.

Clare let go of Evie’s hand.

The sudden absence of contact was a shock, like being shoved. Evie stood just inside the door, her body vibrating, waiting.

Clare didn’t look at her. She walked to the center of the living room, dropped her handbag on the floor with a heavy thud, and turned. Her eyes were furnace-hot in the dim light. She began to unzip her crimson dress. The sound was a hiss, a knife being drawn.

“Fuck these fucking pants,” she said, her voice low and guttural. She wasn’t talking about her own clothes.

Evie flinched. Before she could process the command, Clare was on her. She crossed the room in two long strides, her hands shooting out. One tangled in Evie’s pink hair, yanking her head back. The other went to her waist, fumbling with the button, the zipper Clare herself had undone at the bar.

“Clare—”

“Shut up.” Clare’s voice was pure, feral demand. The slacks were undone. Clare shoved them down, boxers and all, past Evie’s hips. The heavy fabric pooled at her ankles, trapping her. Clare’s hand clamped around her cock, already swelling again under the savage, kneading touch. It wasn’t tender. It was an inspection, a reassertion of ownership.

Then Clare pushed her. Not hard, but with a shocking, deliberate force. Evie stumbled backward, her legs tangled in the trousers, and fell onto the edge of their bed. The old frame groaned in protest. Clare was on her in an instant, one knee sinking into the mattress beside her hip. She grabbed the collar of the silk blouse and pulled, hard. Buttons pinged across the wooden floor, skittering into dark corners. Cool air hit Evie’s chest, her hardening nipples. Clare’s gaze raked over her—the soft swell of her breasts, the flat stomach, the flushed, thick length of her cock lying against her thigh.

Clare’s own dress hung open, revealing the pale, graceful curve of her back, the dark lace of her bra. She didn’t remove it. She simply hooked her thumbs into the sides of her black lace panties and ripped them down her thighs. They shredded with a dry tear. She was wet. Evie could see the slick shine between her legs, smell the sharp, musky scent of her arousal. It wasn't just from the bar. It was here.Now. For this.

“Do you have any fucking idea what you did to me back there?” Clare breathed, straddling Evie’s hips. Her cunt hovered, hot and damp, just above the head of Evie’s cock. “Any idea what you look like?”

Evie couldn’t speak. She could only stare up at the blonde woman etched in gold by the weak streetlight bleeding through the sheer curtains. Clare’s face was a mask of terrifying beauty, her lips swollen, her eyes black pools of absolute need.

“You looked like a god,” Clare whispered. Then she slammed herself down.

There was no gentle descent, no tentative rocking. It was a violent, perfect impalement. She took Evie in one brutal, sheathing motion. Her body opened, a slick, hot, incredible tightness that swallowed Evie to the root.

“FUCK!” Clare screamed, the sound ripping from her throat. Her head snapped back, tendons cording in her neck. Her inner muscles fluttered, then clenched in a vise-like spasm around the invading thickness.

Evie saw stars. The sensation was catastrophic—a white-hot wire of pleasure searing up her spine. Clare was impossibly tight, a wet, clenching fist. “Clare… Christ…”

Clare began to move. She didn’t ride. She fucked. She used her powerful thighs to lift herself almost entirely off, then drove back down, a piston of frantic need. The slap of skin on skin filled the small room, a rhythmic, wet percussion beneath her ragged cries. The torn dress hung from her shoulders, her large breasts spilling from the bra cups, bouncing with each punishing thrust.

“God, your cock…” she gasped, her voice breaking. “It feels… even bigger now.”

She was. Evie could feel it. Every ridge, every vein was catalogued by Clare’s desperate, gripping flesh. Pre-cum and Clare’s own slickness mixed, creating a lewd, squelching soundtrack. Evie’s hands found Clare’s hips, her fingers digging into the hard muscle, trying to guide her, to match her pace, but Clare was a force beyond control. She set a brutal, frantic rhythm, her sweat-slicked body glistening in the dim light.

“Look at me,” Clare commanded, her breaths coming in sharp, sobbing gasps. “Don’t you dare close your eyes. Look at what you’re doing to me.”

Evie looked. Clare’s face was transformed, her perfect composure shattered into raw, animal ecstasy. Her mouth was slack, her eyes wide and unfocused. A line of drool trailed from the corner of her lip. She was coming apart on Evie’s cock, and it was the most beautiful, terrifying thing Evie had ever seen.

“I’m gonna come,” Clare wailed, her movements becoming erratic, juddering. “I’m gonna come on this fucking… beautiful cock. Make me. Make me come. Give it to me. Fucking ruin me.”

Her cunt clenched, a series of rapid, milking contractions that pulled at Evie’s core. The orgasm took Clare violently. Her body stiffened, her back arching into a taut bow. A raw, guttural shriek tore from her throat, wordless and primal. She ground down, her hips making small, frantic circles as the waves crashed through her. Evie felt the hot gush of Clare’s release, adding to the slick mess between them.

Clare collapsed forward, her sweat-slicked torso pressing against Evie’s bare chest. She was shaking, her breath hot and ragged in Evie’s ear. But her hips kept up a weak, insistent rocking. She wasn’t done.

“Now you,” she panted, biting Evie’s earlobe. “Come inside me. Fill me up. I want to feel it. I want to fucking drown in it.”

The permission, the demand, broke the last of Evie’s restraint. The coil in her gut, wound impossibly tight since the bar, since the injection, since a lifetime of feeling like not enough, snapped.

She rolled them over.

She was stronger now. The movement was swift, decisive. Clare grunted in surprise as she found herself on her back, Evie looming over her, still buried deep inside. Evie’s hands pinned Clare’s wrists above her head. She looked down at the wrecked, glorious woman beneath her—mascara smeared, hair plastered to her forehead, cunt stretched wide around her.

She began to thrust. Not with Clare’s frantic abandon, but with a deep, punishing rhythm that came from a new, dark place. Each drive of her hips slapped Clare’s ass against the mattress, each withdrawal was a slow, dragging torture. She fucked her with a focused, possessive intensity she didn’t know she possessed.

“Yes,” Clare sobbed, her heels digging into the small of Evie’s back. “Just like that. Oh fuck, just like that. You own this. You own me.”

The words, the surrender, ignited something final. Evie’s pace became frantic, desperate. The pressure exploded. With a choked cry that was part sob, part roar, she came. It was a volcanic eruption, a surge of hot release that pulsed from her in thick, relentless waves. She buried herself to the hilt, grinding into Clare as she emptied herself, each spurt a claim, an answer.

For a long moment, there was only the sound of their ragged, synced breathing. The smell of sex was overwhelming, a fog of salt and musk and spent passion. Evie’s weight settled onto Clare, who wound her arms and legs around her, holding her in place, keeping her inside.

Slowly, the world leaked back in. The sigh of a radiator. A distant siren. The rough texture of their quilt against Evie’s sweaty side.

Clare’s fingers traced gentle, dizzying circles on Evie’s back. Her voice, when it came, was hoarse, shattered, and impossibly soft.

“See?” she whispered into the sweaty pink hair. “You had it in you all along.”

Evie closed her eyes. She felt the warm trickle of her own release seep out around their still-joined flesh. She felt the profound, terrifying rightness of her body fitted into Clare’s. But beneath the satiation, a cold, sharp sliver of something else took root. A question.

The words echoed in the warm, heavy silence, but they didn't settle. You had it in you all along. Clare's breath evened into sleep, her limbs still a possessive cage around Evie. Evie lay pinned, her softening cock slipping free from the wet clutch of Clare's body with a soft, wet sound. A cold slickness spread on the sheets beneath them. The physical evidence was absolute, but the emotional landscape felt fractured. Clare’s enthusiasm wasn't just acceptance; it was a hungry, voracious consumption. It was the way she’d looked at the bulge in the slacks, not with surprise, but with recognition. It was the public spectacle, a branding.

It was the whispered command: Let them see what you are now.

Evie carefully extracted herself from Clare's embrace. The air was cool on her damp skin. She stood on shaky legs beside the bed, looking down at Clare’s sleeping form in the striped light from the window. She looked sated. Conquered. A tiny, satisfied smile touched her swollen lips.

In the bathroom, the fluorescent light buzzed to life, harsh and unforgiving. Evie avoided the mirror at first, splashing cold water on her face. The scent of Clare was on her hands, her chest, her thighs. She finally looked up. Her own reflection was a stranger. The pink hair was matted with sweat. Her lips were bitten raw. There was a faint, purpling mark on her throat from Clare's teeth at the bar. But her gaze dropped lower, to the soft curve of her breasts, unchanged, and then to the new, heavy weight between her legs. It hung slack, spent, unfamiliar. It felt alien, grafted on, and yet... Clare had worshipped it.

A thick droplet of pearly white, mixed with Clare's slickness, dripped from the tip onto the bathroom tile. The sight sent a confusing jolt through her. Shame, and a deep, unsettling pulse of pride.

---

Four days passed in a blur of stunned silence and frantic, wordless sex.

It became a new, relentless rhythm. Clare would return from work, her power suit a crisp armor, and her eyes would immediately find Evie on the couch, buried in a sweater despite the apartment's heat. A look would pass between them—no greeting, just a spark of dark ignition. The briefcase would hit the floor. Clare would cross the room, her heels clicking a final, warning punctuation, and yank the sweater up over Evie’s head. The glasses would be removed, set aside with a soft click. She would drop to her knees right there, burying her face between Evie’s legs, sucking her cock into a warm, demanding mouth until Evie came with a choked cry, fingers tangled in blonde hair.

Other times, it was slower, more torturous. Clare would corner her in the kitchen, while pasta boiled over on the stove. She would unzip her own trousers, guide Evie’s hand inside, and make her finger her rough and fast until she shuddered, her forehead pressed against a cabinet, whispering ”That’s it, fuck me with your pretty fingers, but God, I want your cock.” Every touch was a claim. Every orgasm was a demand for the next.

Clare talked about it constantly now. Not as a medical anomaly, but as a prize.

“The way you fill me up,” she’d muse over takeout, her foot tracing Evie’s calf under the table. “It’s like you were built for me.”

Or, as Evie tried to focus on a freelance design job, Clare would nuzzle her neck from behind. “I can’t stop thinking about it.About you. Sliding into me in that bar. The sound you made.”

“We were thrown out, Clare,” Evie whispered once, her cursor blinking on the screen.

“Worth it,” Clare said simply, her hand slipping into Evie’s sweatpants. “Every second.”

---

The fifth night began differently. Tense. Clare was late, and a cold rain sheeted against the windows. When her key finally turned in the lock, her energy was different. Not amorous, but electric with a different intent. She carried a small, matte black shopping bag.

“You haven’t left this apartment since,” she stated, shedding her wet coat. It wasn’t a question.

“I… haven’t felt like it,” Evie said, curling tighter into the armchair.

“You need new clothes,” Clare said, placing the bag on the coffee table. “Things that fit. The you that fits me.”

Evie’s stomach tightened. She watched, numb, as Clare drew out the items. Not silks this time. Durable, dark fabrics. A pair of expensive, tailored jeans, clearly men’s cut. A simple grey henley. A pack of black boxer-briefs.

“Put these on,” Clare said, her voice quiet but leaving no room for discussion.

It felt like a ritual. Evie undressed under Clare’s intense, silent gaze. She stepped into the boxer-briefs, the soft cotton cradling her new shape, presenting it. The jeans were next. They buttoned low on her hips. The denim was stiff, and the front panel made a definitive, structured space for her cock and balls. There was no hiding. The outline was clear, even soft. She pulled the henley on. It clung to her shoulders, slim across her chest, ending at her waist. She stood there, transformed again.

Clare’s lips parted. A slow breath left her. “Look at you,” she murmured, rising. She walked a circle around Evie, her eyes missing nothing. “You look… powerful.” She stopped in front of her, her hand pressing flat against the denim, feeling the shape beneath. “Does it feel strange?”

“Yes,” Evie breathed.

“Good.” Clare’s hand moved, palming her through the heavy fabric, coaxing her to life. Evie hardened swiftly, trapped in the new confinement. The sensation was acute, a pressurized, aching swell. Clare’s fingers found the button, the fly. She didn’t hurry. She worked her cock free through the opening, the cool air hitting the exposed, engorged head. She didn’t go to her knees. She stepped closer, her body aligning with Evie’s. She was still in her work blouse and skirt.

“Fuck me like this,” Clare said, her voice a raw scrape. “Right here. In these new clothes. I want to feel the jeans against my thighs. I want you to ruin this skirt.”

She turned, bending over the back of the worn leather armchair, pushing her skirt up to her waist. She wasn’t wearing panties. The pale, perfect curves of her ass were exposed, and between them, Evie saw the glistening, pink furl of her cunt, already wet and ready for her. Clare looked back over her shoulder, her blue eyes blazing. “Now, Evie. Don’t make me ask twice.”

A surge of something dark and possessive rose in Evie’s throat. It wasn't just lust. It was a response to the command, to the deliberate crafting of this moment, of her. She stepped forward, her own movement feeling more assured. She guided the head of her cock through the slickness, notching it at Clare’s entrance. She held it there, feeling the frantic clench of Clare’s muscles, the desperate tremor in her thighs.

“Please,” Clare begged, pushing back, trying to impale herself.

Evie thrust. It was a single, deep, carving stroke that buried her to the root in the clutching, silken heat. Clare screamed, a sound of pure satisfaction. The denim of Evie’s jeans rasped against Clare’s stockings. Clare’s fingernails dug into the leather.

“Yes!” she sobbed. “God, yes. Fuck me. Fuck me in your new skin.”

Evie set a ruthless pace. Each drive was a claiming, each withdrawal a theft of warmth. The sounds were lewd and profound: the wet slap of flesh, the creak of the old chair, Clare’s gasped obscenities. Evie watched herself, clothed, fucking into Clare’s nakedness. The visual was a shock. It was primal. It was everything she’d never been before.

“It’s more than the cock,” Clare panted, her words punched out with each impact. “It’s your… your weight. Your strength. The way you fucking take me. I want more of it. More of this… this you.”

The words sliced through Evie’s building climax. More. Not just acceptance.Not just enthusiasm. A hunger for something still unfolding. What more was there? What else did Clare see waiting in the chemical shadows?

The question crystallized the pleasure into something sharper, more dangerous. Evie’s orgasm crashed over her with the force of a landslide. She snarled, driving in one last, brutal time, her body bowing as she emptied herself in hot, pulsing streaks deep inside Clare’s grasping cunt. Clare shuddered violently beneath her, her own climax a silent, clenched convulsion that milked Evie dry.

They slumped together over the chair, the only sound their ragged breath and the drumming rain. Slowly, Evie softened, slipped free. Clare straightened, her skirt falling back into place, already stained. She turned and looked at Evie, her eyes soft, satiated, but deep within them was a flicker of something unsated. A curious, eager greed.

She reached out and traced the line of Evie’s jaw with a tender finger. She smiled. It was a smile of absolute, terrifying love.

“Perfect,” she whispered, her gaze drifting down Evie’s clothed body, pausing at the wet spot on the jeans. “Just perfect.”

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