Cover of The Libido Protocol

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4 men are part of a clinical trial that wants to enhance libido and sexual pleasure for men. It starts in separate rooms where a nurse sex robot (the drug is in the line it’s using) will get all four men aroused and close to cumming before putting all of them in the same room. Henry is a middle aged obese man, gay. Harold is an obese elderly man, also gay. Rodger is the youngest—he’s a college student, obese, and has never had sexual experiences like this. John is a really tall and muscular black man, he’s intimidating and has a lengthy cock and is quiet most of the time. The rest of the men enjoy watching Joe cum.

Chapter 1: Alone with the Machine

The light wasn’t light, it was an interrogation. Rodger felt it bleaching the color from his cheeks, his shaking hands, the sterile metal floor. His breath hitched, a tiny, panicked sound lost in the hum of hidden machinery.The air smelled like a hospital, clean and cruel.

Across the room, Henry cleared his throat. “Well,” he said, his voice a warm rumble that seemed to push back against the coldness. “This is… unconventional.”

A soft chuckle came from Harold, who was seated with his hands folded calmly in his lap. His gentle eyes scanned the blank walls.“It’s certainly quieter than bingo,” he murmured.

Rodger couldn’t speak. His gaze flicked to the fourth man, John, who stood like a statue carved from obsidian, his massive arms crossed over his chest. He hadn’t moved or spoken since they’d been led in.A panel in the wall hissed open.There was no fanfare. Four identical figures slid forward on silent tracks. They were humanoid, but only in the vaguest sense—smooth, matte-gray shells with jointed limbs and featureless heads. The only details were the articulated hands, five slender metal fingers on each.

Rodger flinched as one stopped directly before him. Up close, he could see his own wide, bespectacled reflection in its blank face.“Oh my god,” he whispered.

He heard a low whistle from Henry’s side of the room. “Talk about hands-on research.”

The machine in front of Rodger reached out.The metal fingers were cool, almost shockingly so, as they brushed the fabric of his trousers. They traced a line from his knee, upward.Rodger’s entire body went rigid. He stopped breathing.The touch was clinical, explorative, as if mapping his topography. It found the soft swell of his inner thigh and pressed.A jolt went through him, shameful and electric. He squeezed his eyes shut behind his glasses.

Don’t get hard, don’t get hard, don’t—

But his body, terrified and profoundly alone, betrayed him. He felt the slow, aching rise of an erection, the fabric of his jeans tightening. A choked sob caught in his throat.This was humiliating. This was…

The fingers stopped pressing and began to stroke, a slow, rhythmic cadence through the denim. The coolness became a strange contrast to the heat blooming underneath. Rodger’s head fell back against the cold wall with a soft thud.He heard a wet, sucking sound from Henry’s corner.A peek. Henry had his head lolled back, a blissed-out smile on his face. His own machine was kneeling, its featureless head buried between his thick thighs, mimicking the motions of a mouth on the sensitive skin there. Henry’s own hand was working furiously over his cock, his breath coming in loud, happy grunts. “Fuck, that’s weird… okay, yeah, do that…”

Harold watched, his soft eyes curious rather than aroused. His machine simply cupped him through his trousers, a steady, gentle pressure. He seemed to be studying the process, as one might watch an interesting bird at a feeder.John’s machine was more assertive. It had one large hand firmly palming his crotch, and with the other, it had slipped beneath the waistband of his sweatpants. John’s expression hadn’t changed, but a single tendon stood out in his neck.His breathing was deep and controlled.Then Rodger’s machine moved.

It leaned in, that smooth, head-like surface descending towards his lap. He felt the cool, unyielding material press against the tip of his cock, now straining against his zipper. It moved, a subtle side-to-side nudge. Then a seam he hadn’t noticed before opened in the smooth gray surface, revealing a warm, wet, pink interior.It descended over him.

The sensation was so sudden, so shocking, it tore a ragged gasp from Rodger’s lungs. It wasn’t a mouth, but it was hot and slick and tight.It sucked.

“Oh… fuck…” he moaned, the words foreign on his tongue.

All thought, all shame, evaporated.His hips bucked involuntarily, driving himself deeper into that impossible heat. The machine took it, adjusting, its hands coming up to grip his flabby hips, steadying him. It began to move on him, a perfect, rhythmic up and down.

He was no longer a virgin in a lab.He was just a body, consuming sensation. He watched, mesmerized, as his pale stomach slapped against the gray shell.His glasses fogged.He was fucking it. He was fucking this thing, and it was good, it was so fucking good he couldn’t think.

His pace quickened from tentative thrusts to a desperate, frantic hammering. He was humping like an animal, chasing a peak he’d only ever imagined. The slick, wet sounds filled his ears, mingling with Henry’s enthusiastic groans and the soft, humid air of the room.

He wasn’t watching his own climax approach; he was staring past his own shuddering form, past Henry, to where John stood.John’s sweatpants were around his ankles now. The machine before him was servicing him with two hands and that same wet, sucking orifice. And John… John was enormous. His cock was thick, dark, and impressively long, vanishing into the machine.But his face was still a mask of intense, focused control.

Harold had shifted, his own forgotten machine forgotten, watching John with pure, rapt fascination. Henry too had slowed his own hand, looking over, his mouth slightly agape.

Rodger’s climax slammed into him then, short-circuiting his voyeurism. It tore through his gut and up his spine, a white-hot wire of pleasure. He cried out, a wordless, cracked sound, as he spurted into the machine’s depths, his whole body convulsing with the violence of it. He slumped back, spent and trembling, a slick of cool sweat covering his skin.

The machine detached from him with a soft, wet pop and retracted, sliding back into its wall panel. He was left exposed, soft, and heaving for air.But the room wasn’t done.

John was still going.A low grunt finally escaped John’s lips. It was a sound of deep, almost effortful strain. His hands, which had been clenched at his sides, now came up and settled on the machine’s head, not pushing it away, but guiding it, controlling the pace. His hips began to piston forward, meeting the machine’s movements with powerful, driving thrusts. The slapping sound of skin on fake skin was meatier, louder than Rodger’s had been.Harold made a small, appreciative sound. Henry just watched, slack-jawed, his own orgasm seemingly forgotten.

John’s performance was not a loss of control; it was a demonstration of it.Each movement was deliberate, powerful, stretching out the act. His biceps bulged, his back muscles corded. He was fucking the machine with a silent, fierce intensity that held the entire room captive.Finally, his body locked. A deep, shuddering groan rolled out of him, filling the sterile space. He thrust hard, once, twice, three final times, holding himself deep. They could all see the powerful clench of his ass, the tremor in his mighty thighs. He held there for a long moment, chest heaving, before slowly, deliberately, pulling out.The machine, glistening wet, retreated instantly.

Silence fell, broken only by the thrum of the machinery and the ragged sound of four men breathing.

John calmly pulled his sweatpants up, his face settling back into its impassive mask. He glanced around the room, his dark eyes meeting each of theirs for a fleeting second—Rodger’s terrified awe, Harold’s gentle appreciation, Henry’s stunned admiration—before looking straight ahead at the empty space where his machine had been.Rodger, his heart still pounding against his ribs, followed his gaze. The sterile wall gave nothing back.But everything had changed. He slowly, awkwardly, tucked himself back into his pants, the fabric cold and uncomfortable against his oversensitive skin.He felt empty. And, for the first time, he felt seen.

The door to the observation room clicked, then swung open with a sigh of compressed air. A technician in a white coat stood there, clipboard in hand, her expression professionally neutral.

“The first trial phase is complete,” she said, her voice echoing flatly in the quiet cube. “You may proceed to the recovery lounge for your vitals check.”

No one moved for a second.Then Henry let out a long, shaky breath that was almost a laugh. “Recovery.Right.” He heaved himself up, giving his still-damp shirt a little tug.

Harold stood with a soft groan, offering John a small, respectful nod that John acknowledged with the barest tilt of his chin.Rodger scrambled to his feet, his legs feeling like jelly. He couldn’t look at any of them, especially not John. He focused on the technician, on the open door, on the promise of a hallway that wasn’t this room.

But as he shuffled out last, the hum of the machinery fading behind him, he knew one thing with absolute, terrifying clarity.He would be back.And next time, he wouldn’t be watching his own reflection. He’d be watching John.

He’d be watching John. The thought was a dark, warm coil in his gut as he followed the others down a brighter, quieter hallway. The recovery lounge was a soft parody of a waiting room: beige upholstered benches, a muted screen displaying gentle, abstract shapes, and the same antiseptic smell, now undercut with the faint, salty scent of their own sweat.

The technician with the clipboard gestured to a series of medical examination tables, their paper-covered cushions crinkling under the harsh ceiling lights.“Please, take a seat. The monitors need a baseline while you’re at rest, and then… during climax. The compound you were introduced to is designed to enhance synaptic response during orgasm.We need to measure the peak.”

Henry chuckled, low and nervous. “You need us to get hard again and pop off?Here?Now?”

“The compound facilitates arousal. It should be… readily achievable,” the technician said, her eyes on her clipboard. She attached wireless pads to each of their chests, her fingers cool and impersonal.“Simply do what feels natural. We will observe from the monitoring station.” She left, a door clicking shut behind her, leaving them in a room that felt suddenly, terribly intimate.The silence was heavy. Rodger’s heart thumped against the pad on his chest. He could feel it, a low buzz in his blood, a familiar heat beginning to pool in his groin despite the sick embarrassment.The drug. It was the drug.He told himself that as he felt his soft cock twitch against his thigh.

His eyes swept the room.Harold sat composed, but his breathing was a bit deeper. Henry shifted on his table, a sheen of new sweat on his forehead. And John… John just stared at the far wall, his massive frame relaxed, but Rodger saw the distinct, thick line of an erection straining against his gray sweatpants. Seeing it, that undeniable proof, sent a jolt through Rodger that was sharper than any chemical.He was the first to break.

A small, helpless buck of his hips pushed his growing hardness against the rough fabric of his jeans. It felt so full, so urgent already.“Oh, god,” he mumbled, not meaning to speak.

“Getting started, kid?” Henry asked, his voice strained with a false joviality. He was palming himself through his trousers, his own need obvious.Rodger didn’t answer. He slid off the table, the paper tearing loudly, and lay back on the crinkling surface. The ceiling tiles were blank.He let his head loll to the side.They were all looking at him. Harold with gentle curiosity.Henry with a grin that was tightening into something needier. John with that same impenetrable, focused gaze.Their attention was a fuel. His hand went to the bulge in his pants, a desperate, claiming touch. He moaned, the sound shockingly loud in the quiet room. “It… it feels so good already,” he stammered, rubbing the heel of his hand over the head of his cock, feeling it pulse. He cupped his balls through the fabric, rolling them, and a sharper gasp escaped him.He couldn’t stand the barrier. In one clumsy, frantic motion, he stood, fumbled with his button and zipper, and shoved his jeans and briefs down to his ankles. The cold air hit his heated skin, but it didn’t matter.His cock, thick and flushed, stood straight out from his belly.

He didn’t look at them. He just turned and sat back on the torn paper, spreading his legs wide on the vinyl padding.He took himself in hand, the touch direct and electric. “Fuck,” he breathed, starting to stroke.It was different from before. This wasn’t about the machine, or a hidden room.This was him, exposed, performing.And they were watching. He saw Harold’s lips part slightly.Saw Henry lick his own. Saw John’s eyes, dark and unblinking, fixed on his moving fist.

“I wanna cum,” Rodger groaned, his rhythm quickening. “I wanna… I wanna stain you.” The words were filthy, absurd, and they poured out of him. He bucked his hips forward, a jerky little thrust towards the three seated men, proudly offering the obscene sight of his jerking cock. The pleasure was a scalding wave, cresting too fast, too high. He was too sensitive, every stroke a near-painful delight.Pre-cum beaded at his slit, shiny and stringy. He smeared it over the head with his thumb, the slickness making his glide easier, hotter. “Look at it,” he panted, spreading his legs wider, his body arching as he lay back, arm pumping faster. “Look at me…”

Suddenly, Henry cursed, a sharp, startled “Shit!” His body stiffened, his back arching off the table as a series of violent shudders wracked him. A dark, wet patch instantly bloomed and spread across the front of his trousers. He groaned, a long, guttural sound of pure, unwilling release, and then collapsed back, panting. “The goddamn drug… it just… fuck.”

The sight, the raw suddenness of Henry’s climax, pushed Rodger closer. He jerked himself faster, his fist a blur.

“I’m… I believe I’m nearing my peak as well,” Harold announced, his voice remarkably calm, though his hands were clenched on the paper beside him.Henry, still breathing heavily from his own spent wave, rolled off his table. There was a determined, almost wild look in his eyes.He shuffled to Harold’s table. Without a word, he placed a broad hand over the obvious bulge in Harold’s tailored trousers, palming it firmly.

“Henry—” Harold began, but his protest died as Henry buried his face in his crotch, rubbing his beard and cheek over the fabric. Then Henry’s tongue came out, a broad, wet stroke along the hard line of Harold’s shaft through the briefs.

Harold’s gentle composure shattered.A sharp, high sound escaped him. He tangled his hands in Henry’s hair, not pushing him away, but pressing him down harder. “Yes, there, please—”

Henry redoubled his efforts, mouthing him hungrily through the cloth, his own spent body forgotten in this new task.Harold’s hips lifted off the table, trembling. His gentle face contorted into a mask of intense, surprised pleasure. He let out a choked cry, his body locking, and then a series of deep, pulsing shudders as he came in his pants, staining the fabric as Henry nuzzled and licked him through it.

Rodger watched, his own hand never stopping, the rhythm frantic and unsustainable.The room wasn’t sterile anymore. It smelled of sweat and salt and release. He was almost there, teetering on the edge, his entire world narrowed to the furious motion of his own arm and the wet, sucking sounds Henry was making against Harold’s soiled trousers.

His eyes, bleary with lust, found John’s again.John hadn’t moved.He hadn’t touched himself. But his erection was a monumental tent in his sweatpants, and his gaze, finally, was locked directly on Rodger’s feverish, jerking display.

But his erection was a monumental tent in his sweatpants, and his gaze, finally, was locked directly on Rodger’s feverish, jerking display.

That focus was a physical weight. It pressed the air from Rodger’s lungs and tightened his balls. He stroked harder, his foreskin gliding slick over the swollen head. Pre-cum dripped in steady strings onto his jiggling stomach.

“Fuck, John, just…” Henry panted, wiping his mouth, his eyes darting between Harold’s blissful, spent form and John’s imposing stillness. “Do something.”

John’s jaw tightened. A low, thick sound started deep in his chest. It wasn’t a moan yet. It was a precursor, a tectonic shift.

JOHN GROANED OUT, CATCHING THE ATTENTION OF EVERYONE. HIS GROAN WAS STRANGLED, TENSE WITH PLEASURE.

IT WAS FINALLY TIME FOR JOHN TO CUM. HE WAS A BIG MAN, HIS BREATH HITCHED IN HIS THROAT AS HE HALF-BUCKED FORWARD. "HMM… OOH… OH FUCK…" HE MOANED, ALARMED AND DISCOMFORTED. QUICKLY, HE PULLED DOWN HIS PANTS, NOT BOTHERING TO UNBUTTON OR UNZIP, TO REVEAL HIS AROUSAL TO THE GROUP.

The gray fabric pooled around his ankles. His cock sprang free, impossibly thick and dark, jutting upward, the veins standing out in stark relief. It looked heavy, burdened. He leaned back against his table, the paper crinkling in protest under his weight, and bucked his hips. It was an abortive, frustrated motion.

HE LEANED BACK AND BUCKED HIS HIPS, FEELING THE CUM MOVING, CLOGGED UP, WITHIN THE VEINS OF HIS MASSIVE AND AROUSED GENITALS. HE GRUNTED IN ANTICIPATION AND DISPLEASURE, MOANED LOUDLY AND BUCKED HIS HIPS FORWARD.

Rodger’s hand slowed, mesmerized. This wasn’t Henry’s quick spill or Harold’s gentle surrender. This was a siege. John’s huge testicles were drawn up tight, a dense sac of pressure. He grunted, the sound raw and animal.

THE CUM SURGED FORWARD, CLOGGED IN HIS TESTICLES, PLEASURE BUILT NEAR THE BASE—READY TO EXPLODE. JOHN HUFFED AND GRABBED THE TABLE, THE CUM SURGING FORWARD TO THE VEINS IN HIS PENIS AS IT SLOSHED BACK AND FORTH, CLOGGED, BUT THE PLEASURE KEPT BUILDING UNTIL JOHN LET OUT A GUTTURAL MOAN, "HMPH…! I’M GONNA…. CUM…! OAAGH… NGGGH… NGH~~"

His entire body coiled. The muscles in his thighs and abdomen stood out in carved ridges. His knuckles were white where he gripped the table’s edge.

HIS HIPS SNAPPED FORWARD WITH RESOLUTION AS HE GROANED LOUDLY AND HIS PENIS JOLTED, CUM SPILLING OUT LIKE A GEYSER.

The first jet was a violent, ropey streak that shot across the space between them. It didn’t arc; it lashed. It slapped wetly against Harold’s chest with a sound like a heavy drop of rain. Harold jumped, his eyes flying open, looking down at the thick, pearlescent streak now dripping down his sternum.

JOHN LET THE CUM HIT THE OTHER MEN, DOUSING THEM AS HE CAME IN LARGE AMOUNTS, HIS BALLS FILLED WITH THICK SPERM FINALLY RELEASED AS HE GRUNTED BESTIALLY WITH EACH SPURT AND SPASM.

The second spurt hit Henry’s shoulder. The third, a powerful, pulsing eruption, landed hot and direct across Rodger’s pumping fist and his leaking cock.

RODGER MOANED IN SURREAL PLEASURE AS HE STROKED HIMSELF FASTER WITH JOHN’S CUM.

The heat of it was shocking. The texture, thick and slick, was the perfect lubricant. The smell, musky and primal, filled his nose. He mixed John’s release with his own pre-cum, slicking his entire shaft, his movements becoming obscenely wet and loud. He was no longer just jerking off; he was masturbating with another man’s cum.

“Yeah… fuck… use it,” Henry breathed, watching, his own hand drifting back to his damp trousers.

RODGER BEGINS BUCKING HIS HIPS, FEELING HIMSELF CLOSE… EVERYONE NOTICES THAT RODGER IS COMPLETELY NAKED NOW, BELLY JIGGLING, COCK LEAKING, AND THEN… HIS COCK BEGINS TO SWELL..

In his frenzy, Rodger had kicked his jeans the rest of the way off. He was sprawled, fully exposed, his pale flesh trembling with each buck. His cock, shiny with combined fluids, darkened, the head becoming an almost painful-looking purple. It thickened further in his grip, the veins bulging. A high, desperate whine escaped his throat as the orgasm gathered, different this time, deeper, rooted in the spectacle of John’s climax and the feel of his seed.

John’s spasms subsided, his breath coming in huge gusts. He watched, chest heaving, as Rodger unraveled before him, using his cum as fuel. A final, weak pulse of white dripped from John’s own tip onto the floor.

Rodger’s eyes rolled back. “I’m… I’m gonna…”

His warning was a strangled gasp. His belly clenched. His back arched violently, lifting his ass completely off the table. His swollen cock jumped in his fist, and with a choked cry, he came. It wasn’t the geyser John produced, but a pulsing, frantic release that painted his own stomach and chest in hot, white stripes. It kept coming, wave after shuddering wave, each one wringing a broken sound from his lips, his body convulsing long after the last drop was spent.

Silence descended, heavier than before, saturated with the smell of sex and sweat and bleach.

Rodger went limp, a boneless heap on the ruined paper, his glasses askew, his body glistening with two separate loads. John slowly pulled his sweatpants up, the movement languid, spent. Harold looked down at the cooling stripe on his chest, then at Rodger, his expression unreadable. Henry just shook his head, a slow, disbelieving smile spreading across his face.

The click of the door was deafening.

The technician stood there, clipboard held a little tighter. Her clinical eyes swept the scene: the stained paper, the discarded clothes, the four men in various states of undress and exhaustion.

“The synaptic readings were… exceptionally pronounced,” she said, her voice carefully neutral. “Phase one is now complete. You may shower and collect your compensation. A car will return you to the university.”

She turned to leave, then paused, glancing back at them, her gaze lingering on Rodger’s shuddering, cum-smeared form and John’s imposing, silent presence.

“We will be in touch regarding the next trial. The pairing showed… interesting potential.”

The door hissed shut.

No one spoke for a full minute. The hum of the lights seemed louder.

Henry finally slid off his table. “Shower,” he grunted, as if the word was a lifeline.

Harold followed, patting his soiled trousers with a strange detachment.

John stood. He didn’t look at anyone. He just walked toward the door marked ‘Sanitation,’ his stride still powerful, but with a new, heavy exhaustion in his shoulders.

Rodger lay there. He felt hollowed out, scraped raw. He felt more alive than he ever had. He watched John’s broad back disappear through the door.

Pairing.

The word echoed in the sticky, charged air. He slowly, painfully, sat up. He looked at the mess on his hands, on his stomach. He brought his fingers to his nose and inhaled, his eyes fluttering closed for a second.

Then he reached for his glasses, his clothes, and got to his feet. His legs held.

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