Cover of The Experimental Endeavor (F)

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 21: Unexpected Visitor

The silence after Clare left was a physical thing. It filled the apartment, pressing against Evie’s eardrums, broken only by the distant growl of city traffic seven floors down. She stood in the middle of the living room, dressed in the oldest, softest pair of grey sweatpants she owned, the only thing that didn’t constrict the unfamiliar weight between her legs. The air still smelled vaguely of sex and panic.She should work. She had a batch of logo mockups for a vegan food truck, due yesterday. Her laptop sat cold and accusing on the cluttered coffee table. Instead, she found herself tracing the shape of her cock through the worn fabric, a morbid, compulsive fascination. It was semi-hard, a heavy, living presence. A question she had no answer for.

The knock at the door was sharp, decisive. Not Clare’s key in the lock. Not the building super.

Evie froze. Her heart hammered against her ribs. She wasn’t expecting anyone.

The knock came again, impatient.

She padded to the door, peering through the peephole. The fisheye lens distorted the figure, but the impression was unmistakable: Sophie.

A wave of cold dread washed through her, followed instantly by a hot, treacherous curl of arousal. This was a bad idea. A monumentally, catastrophically bad idea. She opened the door.

“Hey, stranger,” Sophie said, her lips curving in a smile that didn’t reach her calculating eyes. She didn’t wait for an invitation. She simply stepped inside, her gaze sweeping over Evie, pausing at the loose drape of the sweatpants. “Clare left for work?”

“Yeah,” Evie managed, her voice a croak. She closed the door, the click of the latch sounding absurdly final.

“Good.” Sophie turned, her presence somehow shrinking the space. The air from the hallway, smelling of her clean, citrus perfume, cut through the apartment’s stale anxiety. She moved closer, invading Evie’s space without hesitation. “I’ve been thinking about you.”

“Sophie, I don’t…”

“Shhh.” Sophie’s hand came up, not to Evie’s face, but to her chest, splaying flat over her sternum. She could feel the frantic beat of Evie’s heart through the thin t-shirt. Then, slowly, deliberately, Sophie’s hand slid down.Over her stomach. Lower.

Evie’s breath hitched. Her protest died in her throat. Her traitorous body responded before her mind could form a coherent objection, blood rushing south, thickening, hardening under the soft cotton.

Sophie’s eyes widened a fraction. Her fingers found the pronounced bulge, already swelling, thickening. She cupped it, weighing it in her palm through the fabric. A low, appreciative hum vibrated in her throat.

“Fuck me,” Sophie whispered, more to herself than to Evie. She looked up, her gaze sharp. “Is it… is it bigger than yesterday?”

Evie could only nod, humiliation and a sick pride warring within her.

“Let me see.”

“I can’t, Sophie. Clare—”

“Clare isn’t here,” Sophie stated, her voice flat. Her other hand joined the first, both now kneading the growing mass. “And Clare can’t take it, can she? Frustrating.” She leaned in, her breath hot against Evie’s ear. “I don’t get frustrated. I know what I want. And I want this. All of it.”

Her hands hooked into the waistband of Evie’s sweatpants. Evie didn’t stop her. She stood, paralyzed by need, by curiosity, by a deep-seated desire to be wanted for this monstrous thing, not in spite of it.

Sophie shoved the sweats and boxer briefs down in one rough motion. Evie’s cock sprang free, slapping against her own stomach with a soft, heavy thud. It was fully erect now, a thick, veined column of flesh, flushed dark red, the head glistening with a bead of moisture. The sheer, intimidating size of it seemed to vibrate in the quiet room.

Sophie stared. Her cool composure cracked, replaced by naked, avaricious hunger. She let out a shaky exhale. “Holy shit.” She reached out, her fingers trembling slightly as they encircled the base. They didn’t meet. She needed both hands to fully grasp it. She stroked slowly, from root to tip, her touch firm, exploratory. “Jesus Christ, Evie. It’s… it’s perfect.”

The word, so wrong, so right, broke something loose in Evie. Her hands, which had been hanging limply at her sides, came up to clutch at Sophie’s shoulders. “You can’t…”

“I can,” Sophie insisted, her voice ragged. She dropped to her knees without ceremony. Up close, the reality of it was even more obscene. The musky, animal scent of Evie’s skin, the heat radiating from the engorged flesh. Sophie didn’t tease. She opened her mouth, her lips stretching obscenely wide, and took the head inside.

It was too much. Evie cried out, a short, sharp sound. The wet, tight heat was overwhelming. Sophie’s mouth was a furnace, her tongue probing the slit, lapping at the pre-come that was already flowing freely. She bobbed her head, taking as much as she could, which was barely a third of the length. She gagged, pulled back with a wet pop, saliva stringing from her lips.

“Fuck, it’s huge,” she rasped, but her eyes were alight with challenge. She went back down, using her hands on the lower shaft, working what she couldn’t fit into her mouth. It was a sloppy, inelegant blowjob, all desperate hunger and no finesse. The sounds were filthy—gagging, sucking, wet slaps of skin. Evie’s hips began to move of their own accord, a shallow, involuntary thrusting. Her fingers tangled in Sophie’s dark hair, not guiding, just holding on.

“I need it inside me,” Sophie gasped, pulling away, her mouth reddened and slick. She scrambled to her feet, pulling at her own clothes—a simple silk blouse and tailored trousers. They landed in a heap on Clare’s rug. She was naked underneath, her body lean and tightly muscled, small breasts tipped with hard, dark nipples. She pushed Evie backwards towards the couch.

Evie stumbled, her knees hitting the cushions. Sophie was on her immediately, straddling her lap, facing her. The blunt, slick head of Evie’s cock pressed against Sophie’s cunt. Evie could feel how wet she was, hot and ready.

“Wait,” Evie breathed, panic slicing through the haze of lust. “It won’t fit. Clare couldn’t…”

Sophie’s expression was fierce. “I’m not Clare.” She positioned herself, one hand guiding the immense head, the other braced on Evie’s shoulder. “Give it to me.”

Sophie’s eyes locked onto hers, a dare and a demand fused into one. She didn't wait for Evie to move. With a sharp, controlled exhale, she sank down.

The head, broad and slick, pushed past her entrance. Evie braced for the resistance, the pained gasp, the inevitable stop. It didn't come. Sophie’s cunt yielded, a hot, silken grip that stretched to accommodate the invading girth. There was a low, guttural moan from Sophie, but it was pure pleasure, not pain. She kept going, her body swallowing Evie inch by impossible inch.

Evie watched, mesmerized and horrified, as her own monstrous cock disappeared into Sophie’s tight, willing body. The stretch was visible, a profound distension of Sophie’s lower belly, but she took it all. Her ass met Evie’s thighs with a soft, final slap. She was fully impaled, hilted, every last fraction of Evie inside her. A shuddering sigh of pure satisfaction escaped Sophie’s lips.

“Fuck,” Evie breathed, the word torn from her. The sensation was obliterating. It was nothing like the frantic, external friction of the shower with Clare. This was total enclosure, a deep, muscular clutch that seemed to pulse around her very core. It was hotter and tighter than her own fingers had been, a living, demanding sheath. The comparison to Clare’s struggle was a silent, screaming truth in the room.

“See?” Sophie panted, her voice thick with triumph. She rolled her hips in a slow, experimental circle, making Evie groan. “I can take it. I can take all of you.” She leaned forward, her small breasts pressing against Evie’s chest, her mouth at Evie’s ear. “Now give it to me. Fucking ruin me.”

She began to move, rising up until only the head remained inside, then slamming back down with a wet, meaty sound. The pace was brutal from the start. Each downward stroke forced a choked gasp from Evie, her hands flying to Sophie’s hips, fingers digging into the bone. The couch creaked in protest beneath them. Sophie’s nails scraped down Evie’s back through the thin t-shirt.

“You feel that?” Sophie grunted, her rhythm becoming frantic, animalistic. “You feel how deep you are? God, you’re so fucking big. I can feel you in my guts.” Her words were filthy, a raw soundtrack to the act. “Cum for me. I want to feel you fucking explode inside me. Do it.”

The command, the impossible tightness, the sheer illicit wrongness of it all, shattered Evie’s control. A tidal wave of pressure gathered at the base of her spine, undeniable and seismic. Her vision whited out at the edges. Her hips jerked upwards, fucking up into Sophie’s violent descent.

“I’m—Sophie, I’m gonna—”

“Yes!” Sophie screamed, clenching around her.

Evie came. It was a convulsion, a raw expulsion of everything—the fear, the confusion, the weeks of frustrated desire. Her cock pulsed violently inside Sophie’s clutching heat, jet after hot jet flooding deep into her. She cried out, a sound she didn’t recognize, her body bowing off the couch.

Sophie rode her through it, milking her with fierce, internal spasms, her own climax hitting with a sharp, shuddering cry. She collapsed forward, her sweaty forehead against Evie’s shoulder, both of them breathing in ragged, shattered unison.

Evie felt spent, hollowed out. The orgasm had been catastrophic. She expected the familiar softening, the retreat. It didn’t happen. The intense, throbbing fullness remained. She was still rock-hard, buried to the hilt in Sophie’s slick, used cunt.

Sophie felt it too. She lifted her head, a slow, wicked smile spreading across her face. She shifted, and Evie felt herself, impossibly, thicken further inside the hot, clenching channel.

“Oh, good,” Sophie purred, her voice husky. She began to move again, a slow, grinding roll of her hips. “You’re not done. You’re nowhere near done.” She kissed Evie, a deep, possessive kiss tasting of salt and sex.

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