Jason pushed the lid open slowly, releasing a plume of wispy cool air. He could feel the chill on his fingers as he reached inside. His eyes never quite left Laura’s face. She looked nervous, and perhaps a bit curious. Jason grasped the rounded end of a vial and slid it into his palm, before giving the chilly tube a cursory glance: *201U9H.* He slid it back into place. *Not what he was looking for.*
Laura swept her fingers through her hair every few seconds as she waited. Her lips parted, she sighed and hummed but said nothing.
“Just looking for something—” Jason said reassuringly. He glanced at another vial before returning it to the case.
“—GOOD,” he exclaimed as he finally pulled the vial labeled “A1V18L” into his palm.
He placed the vial on the table, taking special care not to damage the delicate mechanized injection-ready cap.
“Did you plan on participating in one trial?” Jason asked, “More?”
The tip of Laura’s ruby-painted thumbnail found its way into her mouth. She nibbled it nervously while staring down at the lengthy tube of yellowish liquid sitting on the table.
“You think I should try more than one?” She said, answering his question with a question.
Jason shrugged, “like I said, they’re all safe.”
Her mouth went small and tight as she thought about it. Her eyes focused on the top thermal case, “Just this one, for now,” she answered.
Jason let the lid of the thermal case fall closed and snapped it shut as he pushed himself away from the table.
“Alright,” he replied as he snatched up the A1V18L vial, “I’ll lead you to our lab technician. They’ll administer the injection and you’ll be on your way.”
Laura gave him a sheepish grin.
“This way, please.” Jason motioned her forward with a wave of his hand and walked towards the set of large white doors behind them. It took a moment but he could hear her stepping behind him
She was quiet the whole walk over. His head was buzzing with questions. He wondered why it didn’t matter what vial she was getting. He wondered why she let him choose. He wanted to ask. He also wanted to ask for her number. He tried to casually glance back at her and spark a bit of conversation, but by the look of her, Laura wasn’t in the mood for chatting.
Once he handed over the vial and introduced her to the technician, she had basically vanished. He didn’t even see her leave the facility. He thought about what had happened to her for weeks. No other volunteers showed up in the clinical trials.
He wondered what would happen if no one else volunteered for the trails as he was leaving his station at the atrium for lunch when he noticed a blonde girl with a preppy fashion sense pacing in front of the building.
Her choppy short hair was billowing in the wind, the darker browns and twisting sunlit tones veiled her face as the wind picked up. She wearing a navy blue button-up sweater vest over a white collared shirt and checkered skirt that was a bit too skimpy for such a windy day. The wind gave him a quick glimpse of perky round ass flesh, and he quickly looked away. He thought he should probably just leave her be, but she looked as if she wanted to come inside.
“Miss?!” Jason called out.
The woman swept her hair back behind her ears shielding her face from another gust of wind. She flashed him a broad grin of pearly white teeth. It was Laura he realized. It had been nearly two weeks to the day since he had last seen her.
“You’re the guy that works upfront?!” Laura cheered.
“Jason,” he replied helpfully as he stepped in closer.
“Yes, Jason!” she repeated with some excitement, “Oh gosh, Jason… it’s so good to see you!”
“It’s good to see you too Ms. Parker,” Jason answered.
Laura smiled cheerily, combing back her dirty blonde hair as the wind kicked up again, “You remember my name,” she gushed, “but please call me Laura.”
The wind was making Jason shiver, that or it was his nerves. He couldn’t believe Laura was standing in front of him. Laura had occupied so much space in his head over the last few weeks he could barely think of much else, only he hadn’t thought of what he would say he if actually ran into her.
“Oh my gosh, that shot they gave me…” Laura began to explain, “it was really something. I feel more confident, more self-assured…”
“That’s great news, Laura!” Jason shouted as the wind began to howl, “Do you wanna head inside, this could be a tornado or something.”
Laura nodded and walked ahead of him carefully holding down the end of her skirt as she stepped.
The atrium was eerily quiet, compared to outside but Laura was grinning cheerfully.
“I forgot how beautiful this building was…” Laura began as she glanced around the cavernous room.
She looked like an absolute ray of sunshine. *This was it. This was his chance,* Jason realized. He felt his pulse quicken. He needed to ask her out.
She was the girl of his fantasies. She had a sweet smile, big brown doe-eyes, and a sparse brush of freckles on her nose and cheeks. She was cute. Her ass was cute too, not too thick, but round and perky. Her ass was designed for taking cock, especially now, if injection worked like he was told it would. The thought made him grin, *his very own, personal anal pornstar.*
It was only then he realized he hadn’t been paying attention to what Laura was saying. Not a single word.
His face contorted with shame, “Sorry, Laura, you were saying something?”
“Are you okay Jason?” Laura asked with some concern.
“I’m fine,” Jason replied, “Please go on…”
“Okay…” She began again, “…I was saying… there may have been some side effects… I feel great honestly… but —Jason, the truth is I was terrified of sex…” She took a deep contemplation breath, “…I hardly ever even masturbated…”
“Oh,” Jason answered unsure how to respond.
“This is probably way too much information… but two days ago I had an orgasm …on the toilet, like while I was using the toilet…” she clarified.
“Oh?” Jason repeated.
“I’ve never had an orgasm…” Laura confessed, “my head is all warped, something feels different like in my…” her voice went all quiet and a flush crept up her face.
“What feels different?” Jason asked matching her hushed tone. He felt his cock twitch awake. He knew the answer. He knew the answer before Laura knew. He did give her the vial after all, and now it was obvious she hadn’t asked the lab technician for any details either.
“—Like something is going on with my butt…” she answered.
“Interesting…” Jason replied, focusing all his mental energy on willing away his growing erection.
“Things are so different now… you know, I don’t even own a vibrator…” She said a matter-of-factually, “Yesterday, I order one of those …sex machines… it was like $800,” she took a short audible breath and sighed, “$800… for a dildo thrusting machine. It’s capable of something like 300 strokes per minute, I’m not even sure if that’s a good thing, but I’m actually pretty excited about it.”
Laura gave him a coy grin, “That’s embarrassing, right? A machine? I bought a MACHINE to fuck me, because… I don’t know, because the urges I’ve been getting… have been weird?”
Jason swallowed hard, “Not embarrassing, at all…” He tried to canter his legs to hide his stiffening cock, but now he could feel it pressing against the front of his slacks. He only hoped she didn’t notice.
“Do you ever get those urges, Jason?” Laura asked in a sweet, innocent tone, “like there urge to do something a little naughty?”
Jason could feel his cock swell against the zipper of his slacks, begging for release. “Sometimes,” he answered.
Laura glanced down at his crotch, there was no hiding it anymore, “Is now one of those times?”
Jason felt his face go hot, “Yes…”
Laura took another look around the atrium, “Is there somewhere we can go?”
Jason stepped around her, tucking his erection away behind the waist of his slacks, as nonchalantly as he could. He knew a place. There was a lab near the front office that was so often empty it was difficult to keep the dust from settling in. Laura followed him closely as he walked through the double doors and he badged into the lab.
Jason flipped on the lights, and allowed Laura to step inside before he shut and locked the door, “this place is usually quiet,” he said hoarsely.
Every corner of the room was painted white, and florescent lights were harsh and bright. The lab was some kind of examination room, complete with an examination table and a single row of cabinets along the furthest wall, the tops of which were covered in stacks of printer paper and various other office supplies.
Laura stared up at him, studying his expression. He gave her an awkward but approving smile, satisfied with what she saw her hands went right for the waist of his slacks. She didn’t bother to undo his belt. She pulled out the tucked-in end of his shirt, and her hand plunged into his trousers, her dainty fingers wrapped around the middle of his cock.
Jason moaned, as her hand went to work, her fingers sliding up and down with the limited range of motion the confined space allowed.
She nuzzled her head against his neck and pushed her chest against him, her breathing went shallow.
“This is so crazy…” she mumbled into his collar.
The moment his hands fell around her waist, she began to mew a little, her hips swaying along with the tempo of her anxious little fingers.
Jason’s head was swimming, *why’d she pick him,* he wondered. His cock was beginning to throb in her hand. She leaned into him, balancing herself on the tips of her toes, and then her lips were on his. Everything fell out of focus. It was a short and tender little kiss, ending as suddenly as it began. His tongue briefly caught between her lips as she pulled away. The cute little mewing sound she was making, devolved into hot desperate breath, as she loosened his belt.
She had barely gotten his pants down when her sweater vest was gone, buttons snapped away pinging off the walls. Her shirt followed, and she practically torn it off, then came his, then her skirt.
She was pulling him, two fingers caught in her grasp as she stepped backwards towards the examination table in the center of the room. She had stripped down to a pink cotton thong, clinging high on her deliciously trim hips, and a pair of kitten heels and bobby socks.
He grabbed a handful of perky tit flesh, kicking his slacks off his toes as she led him along.
Laura hopped backward, her ass landing on the edge of the grey vinyl padding that adorned the top of the table. Their lips colliding sweetly between her breaths. “This is so crazy…” she mumbled again, between kisses. “I want… I want…” she stammered, her legs were trembling, as she hooked her heels behind his knees.
“Tell me?” Jason pleaded, his fingers still idly tweaking her stubby pink nibble.
“I want…” She swallowed hard, her big brown eyes lingered on his, some seemingly mischievous proposition waiting behind them, “I want you to put it in my butt,” she answered, grinning bashfully and anxious, her cheeks glowing red.
“Yeah?” Jason smiled.
Laura only nodded falling away from him, her feet sliding up his thighs as she settled into the pliable cushioned table. She spread her knees, and she arched her chest with a satisfying stretch, her pink nipple capped tits jutting upwards, begging for attention.
Her knees spreading open a little wider.
His cock was so hard it was standing straight up, nearly flush against his pelvis, swollen and throbbing. He grabbed the base of it angling it straight ahead, pressing the head against the mound pussy beneath the cover of pink fabric.
Laura let out an appreciative hum, wriggling her hips as he sawed the bulbous end of dick into her pussy mound.
Laura was blissfully unaware of what an erotic picture she painted. Her legs spreadeagle, lithe thighs pushed back, her body squirming against his touch. The corners of her open mouth curved into a grin, he nudged his cock deeper, straining the fabric. He swung his cock back and tapped it against the top of her pussy.
Laura began to thrust against him, swaying her hips and pushing the tip of her heels against his chest. Her breath hitched on every motion. Jason felt a stirring pressure, edging towards the tip of his cock. If wasn’t careful he’d cum before he even stuck it inside her.
Laura whimpered, her eyes popped open, brimming with frustrating need, she grabbed at the edge table and scooted down until her ass was nearly dangling off the edge. She reached down pulling the pink thong aside.
“Jason,” she moaned, “please… I can’t take any more teasing…”
As he stepped back he saw her fingers firmly squeezed into her round little ass, holding herself open and waiting for him to press himself inside.
A glossy bubble of pussy-juice filled the bottom edge of her slit. Her clit was still shielded away behind the soaked pink fabric of her thong. Her pink puckered ring already looked slick to the touch. It was twitching with excitement as if bidding him inside.
“In your ass?” Jason reasserted. It felt like a dream. He was still waiting for himself to wake up.
“—Uh-huh,” Laura answered in a breath.
He swallowed hard, his cock was buzzing, he gripped the root of it. He could feel it pulse, he knew he was perhaps average in size, but his cock looked monstrously large compared to the hole he was aiming for.
Jason lean forward, with one hand pressed on her thigh. He pressed the tip of his cock against her asshole, and Laura gasped and squirmed a little. He gave the puckered ring a little nudge and then another, and Laura responded in kind with coos and sighs.
The heat coming off her was sweltering, he spat on the tip of his cock and sunk it back in, steadily pressing inward. The tiny opening slowly started to give way, it was exquisite and smooth, like lips opening up for a kiss. Laura was taking quick near panicked breaths. Her chest rising and falling so sharply her tits were starting to tremble.
He pressed deeper and hit another pocket of resistance that caused Laura’s whole body to stiffen up and her chest seemed to jolt forward.
“Oh my gosh, Jason what’s happening?” Her fingers twitched and her knees began to tremble all over again, and she adjusted her grip on her ass. “Fuck me… this feels incredible…” Her voice was sputtering, wet, and breathy.
Jason had never experienced this kind of reaction from a girl, it made him smile. He sunk his cock deeper, he could feel another ring of muscle creeping over the flared ridge of the blunt end of his dick. The feeling was unbelievably intense, so intense he clenched his eyes shut, tightening his grip on her thigh, a lusty growl practically rattled his teeth. He wondered if he could find anything that felt this good again.
The snug warmth of her greasy rectum started clenching against his pulsing cock, he had barely contained the need to explode and the added pressure proved to be too much for him. He tried to clench and that only made things worse. He felt his cock twitch and spasm, his hips jerked forward and back, and Laura’s velvety ass muscles gripped even tighter. He bit his lower lip and grunted as his cock spewed out a thick sticky wad of ill-fated babies halfway in the girl’s cum hungry rectum.
Laura’s breathing was shallow again, each little twitch caused her to gasp. Jason tried to stop it, but his cock was all too eager to fill her up. Every spurt made his knees tremble, he plunged deeper. The tip of his cumming cock pressed against another barrier, fluttering and eager to accept him. As he pressed forward and Laura’s hips sunk down, her ass was sucking up his pulsing shaft as he came, each needy ring of muscle milking his cock as he plunged. After three or four heavy spurts his cock began twitching weakly as his orgasm finally began to subside.
Laura’s eyes were wide open, her lips fixed in a little O shape as gasped. She was mumbling, incapable of articulating any thoughts, her whole body twitched, as if struck with a sudden jolt of electricity.
“I’m CUMMMMMING,” she squealed huskily.
Jason’s dick was starting to deflate, but Laura scarcely seemed to notice he had emptied his balls in her ass before he even bottomed out. Her chin pointed up, and her mouth hung open in pure ecstasy. Her thighs were trembling so fiercely that the table was starting to shake despite being bolted to the floor.
There were pulsing swells of pressure clinging inch to inch around his cock, despite the tightness the walls of her ass felt so soft, it may have been the softest thing he had ever felt.
He let himself soak in the moment, clenching and releasing, and to his own amazement, he felt his cock stirring back to full strength as Laura writhed on his dick.
Her eyes were squinted shut, her cheeks were flush and tears were welling up in the corners of her eyelids and leaking down the sides of her face. It was the most intense orgasm he had ever witnessed.
“Are you okay?” Jason asked his voice was hoarse and raspy, still recovering from his own orgasm.
She released her grip on her ass. Her arms raised in a little cheering motion. She caught her breath, “SO-GOOD,” she roared in a single breath between sighs.
He leaned forward her deliciously round ass only just now pressed against his thighs. His cock was finally fully sheathed in her ass. He could feel his dick twitching happy and overstimulated, it was then he felt something bump against the tip of his dick. Laura ground her hips and sucked in a sharp breath the moment it happened.
He edged back, ready to thrust again, but her gaze frozen him in place. She was still panting, with a lusty lop-sided grin on her face. All other forms of sex were utterly ruined, and every girl after her would pale in comparison. This was the deepest, hottest, and most impossibly good thing that had ever happened to him, and he hoped Laura felt the same way.
She strained her neck upwards, her eyes wide and pouring out a desperate abundance of affection. He fell forward to reach her face, his cock pushing ever-so-slightly deeper into her ass. Laura shifted, squirming until their mouths managed to touch. This kiss was deep, and silent, the tongues rolling and swaying against each other, urging their hips to do the same.
As he straightened back up, Jason began to grind slowly against her ass, their eyes still locked. Laura lifted her knees a little higher, her ass arching up to meet his thrusts. He felt his cock tap against the fleshy protrusion again. This time Laura’s eyes bulged, he swung into her ass again, the *something,* felt distinct but soft, and there was a grittiness building there the more he pressed himself inward.
Laura’s chest heaved, and the motion seemed to flow downward from there causing her stomach muscles to ripple, and her hips to roll until finally, her pelvis came crashing hard against his lower abdomen.
“Jason… Your cock is so deep…” she whimpered.
“Too deep?” Jason asked breathlessly.
Laura shook her head, “It feels, so good,” she moaned hotly, her hips lurching upwards as she fucked herself with his dick, “I like it… so deep in me… I’m so full of your cock…”
“You like that?” Her voice sounded delirious with pleasure, “hmmm? —you like that?” She repeated.
“Yeah…” Jason confessed.
Laura’s ass muscles were squeezing eagerly around his cock, and the tip kept colliding with the fleshy spot in her depths, the ridges of his cock sinking passed it on more than occasion. The sensation made Laura all twitchy. Then he realized what it was, *A1V18L* had given her an ultra-sensitive physical balls-deep-butt-fucking ‘reward button’ and Laura had finally found it.
He could feel her climax building with each wriggling roll of her hips, every internal collision made her face glow a deeper shade of red and rectum squeeze him harder. Jason leaned forward planting his palm near her face for leverage as he perched himself on the edge of the table. He sunk balls deep in her ass and held himself there until he found his footing.
Laura squealed, “Oh my gosh, JASON, YES…” her forehead was covered in sweat. She was salivating, her voice was hungry and wet. Her asshole pulsed and the sensation traveled up and down his shaft. Jason slowly inched his cock back, causing Laura to quiver. Her expression was indescribable, full of want and lust, and excitement.
All his fantasies were erased and replaced by the magic of this moment. Laura braced herself, lift her hips just slightly to meet his dick while her head and shoulders sunk deeper into the vinyl. Jason let gravity take him, sinking his cock to the root in a single thrust. Laura screamed in pleasure. The force rolled through her until she was clawing at the vinyl table, her tits bouncing, her belly and hips moving in an undulating wave. He gave her ass another thrust her bowels pulled and clenched against his cock as he pulled away, and then another, slowly picking up his pace.
Laura was whimpered through every thrust, her ass bouncing against his hips. Her hands frantically grabbing at the edges of the table. The sensation around his cock was incredible, so incredible, he had to will himself not to cum. Laura, on the other hand, began to pant and moan, until she choked out, “I’m gonna—”
Her warning was cut short as she began gasping through her gritted teeth, her bowels clenching and then fluttering along the length of his dick as he fucked her through the orgasm. Each new thrust felt grippier and more sticky than the last, and he could feel pre-cum leaking out of his cock. As much as he wanted to, he couldn’t keep up the pace for long, and Laura was a quivering mess. She looked as if she had just run a marathon. Her hair was fizzy, her face was flush, and she was all teary-eyed.
Jason paused a moment, his cock half-buried in Laura’s ass, twitching and ready to bath her sticky bowels with another batch cum. He had to catch his breath, the over-stimulation made him feel high and his muscles ached.
They were both panting and moaning, smiling at each other. Laura tried to speak, but her words were too short and breathy to understand. He steadied himself and plunging his length back in inside the inviting warmth.
She screamed out in ecstasy, she must’ve felt the need to bite down something because she latched on to a bit of his forearm. She took a bit of his flesh between her teeth and pulled away just enough to stretch the skin. The pain was sharp, he was about to pry her off, when she let go and let out another keening cry, the sound was breathy and wet. Her eyes crossed, before rolling towards the back of her head. Her eyelids were fluttering as fireworks were going off between her ears. The ribbons of muscle in her ass began to spasm wildly around his cock again.
She was cumming again, this time Jason felt all his blood rushed to his dick. Her rectum muscles were sucking and slurping along the length of his dick like several eager little mouths. His grip tightened on her hip.
She was breathing deeply and rapidly when she reached out and cupped his chin as the pending orgasm finally took him.
“Are… YOU… cumming?” she asked, her voice shallow and short of breath still in the midst of an ebbing orgasm.
Jason could only nod, his brows furrowed, his lower lip quivering. He was pumping into her on instinct alone. A wave of pressure traveled from the base of his spine to the tip of his cock, and exploded outwards, sending a stream of sticky cum into her ass mid-thrust.
Jason plunged his cock as deeply as he could, his cock ballooned, twitching as Laura’s ass muscles clenched around his length.
Laura strained to meet his face, her big brown eyes looking up at him as came inside her for the second time. “That’s it, baby… fill me up,” she teased.
Jason snarled, his cock releasing spurt after spurt of cum deep into her deliciously round ass. His skin was tingling. Laura, teased him some more interspersed with happy little moans, “that’s it, Jason… yes… cum for me…”
His orgasm was weaker this time but it felt like it took ages for his cock to stop twitching. His cock was still tingling when he slumped over into Laura’s arms. She caressed his head, gently scratching his nape, cooing happily.
Source: reddit.com/r/eroticliterature/comments/pnmz7w/gene_therapy_part_ii_scifimfanal