John Doe #24793, nanotech reprogramming, MC only (for now).

Lily Jancohu swayed into room 13, left hip lightly brushing the door frame. She'd had wide hips even before puberty hit, and it's effect was greatly increased by the nanotech everyone had inside them these days.

Modern employer regulations and building codes required doors to be at least half again the width of pre-nanotech doors, and most were twice as wide, but this facility was pre-nanotech construction.

And Lily wasn't really an employee, more a co-conspirator.

She and the rest of her team were nanotech engineers, programmers, medical doctors, nurses, physical therapists...etc.
Basically, every expert a modern hospital or medical research lab needed, although nanotech had cut the floor out of both the medical care and cosmetic surgery markets in 2023. Legally, everyone was allowed to seek modifications to their nanotech to try and improve things, because although everyone was now at least fit and fairly attractive as a result, underlying DNA still dictated what the nanotech allowed, and cosmetic surgery wasn't one of those things.

-------Some history, skip if you wish but it's fun------
Until 2040, a market for "cosmetic reprogramming" had started to grow, with a few spectacular results. But there were some disturbing mistakes as well, and laws regulating nanotech cosmetic reprogramming were put in place. Although "facial reprogramming" was now fairly common, it was within strict limits that only allowed "incremental changes". Adjust cheekbones a bit, reshape the nose, more symmetry, fuller or thinner lips, etc. Most of the changes were similar to those done by cosmetic surgeons before 2023, but without the trauma, possible scars, and recovery time.

The few spectacular results mostly had been former porn stars who sought bodies even more **** than the new norm, in hopes they could go back to their old jobs. They now had truly stupendous proportions, and although the nanotech might prevent tits the size of yoga balls from hurting someone's back, they were still quite difficult to maneuver around. Not to mention hips and asses so large they often got stuck in doors, at least until the new wider door standards became commonplace.
A smaller number of male porn stars had of course sought larger genitals, and a few had succeeded, with the current "Cock King" being "Long Dong" (born Doug Dong to a Chinese family who immigrated to the United States in 2025), who boasted a ridiculous 24-inch long cock, twice as thick as a soda can, with testicles literally larger than his head. Thanks to the reprogramming, Doug had to intake significantly more food and water when he was performing, but could unleash hilarious volumes of cum into and onto his costars. The rest of the "cock lords", as they had come to be known, ranged upwards from a relatively tame 15 inches in length to those approaching Doug's size, with similarly outsized testicles and the like. No other approached his shear volume, but many of the current popular porn involved things only 3d rendering artists could do before nanotech.
However, the so-called "pornocock" nanotech mod had an additional side-effect which rendered it's recipients completely sterile, and despite the insane cum volumes involved, they could only perform once a day at most. Careful NDA's for their costars, along with cuts and editing of the footage, managed to present the "Cock Lords" as if they had insane stamina - but everyone knew they were sterile.

Many women these days fantasized about spending a night with one or more of them, and they were effectively the top male celebrities on the planet. Some had even branched out into films other than porn, although still playing on their massive equipment in a world where even PG films had brief nudity now.

Many more women fantasized about a fertile "Cock Lord" wearing them out one night and impregnating them.

Outsized dildos based on their genitals with various special features were a popular purchase, and many a women brought her favorite to work in custom carrying cases, for use when "libido break" time came around.

Normal men were of course unable to match up, and although most women slept with one or more of them in attempts to become pregnant, there was a growing resentful minority who had taken to calling themselves "involuntarily inadequate". The "Inads" usually complained to each other about how nanotech had obviously been developed by an anti-male cabal whose eventual goal was to eliminate men from existence.
Oft-used as proof of this were the few fully-functional multiple-genital persons, especially the two existing dickgirl pornstars, both of whom had taken advantage of the "pornocock" mod before it was banned. Both possessed fully functional genitals from both "standard" sexes, with cocks that rivaled "Long Dong's" in girth, if not length. The had their own porn business "Mistresses of Cock", usually doing scenes where they dominated and double-teamed males, but occasionally doing a scene or two where they performed with one or more females. For some reason the "pornocock" mod applied to them differently, and their stamina was approximately twice that of their male counterparts. Their signature move was to blow a massive load inside whoever they were dominating at the time, then fuck each other until a simultaneous finish.
They had a decent following of women who fantasized about them, as well.
Not to mention a few men.

Other evidence the "Inads" pointed to were some of the mistakes that had occurred, everything from nigh-instant (and painfully horrific) **** for about 5% of the volunteer males to one poor male whose genitals entirely disappeared, leaving only holes to excrete waste through. He (later "they") became entirely asexual as a result, with no interest in sex, and committed suicide 5 years later in 2041 after the most recent effort to reverse the problem gave them back their libido without returning their genitals.

However, their main evidence was the last major mistake which resulted from attempts to "fix male fertility". A blackmarket fix called "equalizer" which seemed to work, giving men nearly equal libido and fertility to women, but was not yet approved as safe by the experts. Millions of men bought it, as it was fairly cheap for a blackmarket mod (yet more evidence for the vast conspiracy the Inads were fighting), and like other widely used mods, after 6 months with more than a billion users, it was automatically added to the default nantec programming. Even in 2043, no one yet fully understood or knew who wrote the original code, and the nanotech spread had "infected" the entire planet.
But "equalizer" wasn't a permanent fix. After 9 months in which more copulation took place than the past 4 years combined, the average male fertility dropped to the pre-equalizer level, and their sexual stamina and libido dropped as well. The average man now couldn't get it up more than once a day, although their libido might want to.

After that, public outcry drove the government to clamp down hard on blackmarket nantec mods, with significant funding put into enforcement agencies which ensured nothing entered wide-spread usage without being approved as safe. To the point of forcibly quarantining people who had unapproved mods until the full effects were known.

A few of the niche popular nanotech mods include cosmetic ones which temporarily turn the recipient into a customized "furry" version of themselves, or things like elf ears.
Temporary mods to the size of various sexual body parts, or even muscle/body mass, were allowed under the regulations, but as yet not even the more dangerous (and permanent) black market mods could improve fertility by more than a infinitesimal amount.
A few of the more dangerous black market mod side effects include incredible weight gain and inability to lose it, which scared most people away from trying any, although those with a fetish for large overweight women were quite happy with the results.

In late 2042, nanotech reprogramming researchers started getting assassinated, and an organization calling itself "Voluntarily Violent" claimed responsibility for 99% of the deaths, stating that they're "stopping the male extermination".

Although governments and even some private security entities have tried to find and stop them, thus far they've had no success, as apparently the assassins/terrorists have access (somewhat ironically) to black market nanotech mods that cause any DNA they leave behind to destroy itself after a few seconds, and apparently erase their fingerprints for good measure.

Authorities (and for that matter, most of the public, or at least those who don't sympathize with them) suspect that they're affiliated with the "involuntarily inadequate" crowd because of the naming convention similarity, but as yet no proof is known.

Many people working in the field ostentatiously switched fields, publicly announcing it in an attempt to avoid ****. Most government-funded researchers, as well as those working for big corporations, were provided with top-end security, but in the majority of cases it failed, with both the researchers and the research apparently destroyed.

As of early 2043, no research on nanotech reprogramming is public, although rumors of secret attempts abound.
Occasionally, "Voluntarily Violent" will claim responsibility for "protecting the men" and point to an event which wasn't really noticed until they did, although investigative reporting after the claims usually shows it to be a probable additional strike on some government or big business attempt at further research.

------End history segment------

Lily glanced at the tablet she held, checking the details on room 13's occupant.

Name: Not provided/unknown, designation John Doe #24793.
Height: 5'7"
Weight: 175 lbs
Fitness level: slightly overweight, little muscle tone, forearms more toned than rest of body.
Cock size flaccid: Length 3.58 inches, width 1.17 inches
Cock size erect: Length 5.97 inches, width 1.76 inches.
Average ejaculation volume: 2.41 ml.
Maximum ejaculation volume recorded: 7.59 ml. (after a week of enforced abstinence combined with carefully selected meal ingredients).
Average time to ejaculation per VR session: 8 minutes

Fertility level: Estimated 0.001% chance per attempt, well above the average of 0.0005% but not outstanding.

Current nanotech reprogramming: A15C-9435ML-F750P, version 0.07.893. To explain the code: It is attempting to give the subject an "alpha" personality, a 15 inch long cock, cum output thousands of times the current average, and fertility 750% of pre-nanotech levels. As the version code indicated, it had yet to work, and the programmers apparently didn't hold much hope for it.

Lily glanced at the person in room 13's bed, noting that his naked form matched the data so far as she could tell.
But science required accurate data, and the more the better, so with a small mental sigh she donned a pair of sterile gloves and pulled out her measuring equipment.

John Doe #24793 barely reacted to her presence, despite the stunning amount of cleavage not even her lab coat could conceal. After 3 months of trials, he was nearly immune to the physical charms of all the staff he'd seen, and besides, he knew they needed a good flaccid baseline for their tests. Protocol was for him to remain relaxed in bed until initial measurements were about to be taken, then to get up for various height and weight measurements.

Lily measured his genitals:
Cock size flaccid: Length 4.3 inches, width 1.5 inches
Hmm, slightly above the data, but not unusual.
She stepped back and gestured for him to get up.
Height, weight, fitness level, all matched the datapad.
Now the hard part, no pun intended.
"Time to get erect, #24793", said Lily, gesturing towards the far wall, where a blowjob machine and combined collection and measurement system with attached VR headset sat. "Pick your poison", she said.

#24793 donned the headset and started waving his hands around, navigating through the menus. Despite how Lily's no-nonsense attitude no longer even vaguely aroused him, he'd had a minor crush on her since he'd volunteered for the testing program, and he pulled up the favorite scenes he'd asked the programmers to create, ones that placed Lily in situations she'd never been in with him around. It starting with his meeting a skimpily dressed Lily on a beach, then rapidly progressed to a nearby nude beach with Lily standing bent over before him begging for his cock. The VR system synched the machine to her location in the VR, and he firmly but slowly thrust into "Lily" with a grunt of pleasure.

Lily checked the data feed from the machine on her tablet, noting that this was apparently an above-average day for #24793.
Cock size erect: Length 6.15 inches, width 2.09 inches.

An unusually long 15 minutes later, #24793's thrusts and grunts against the faux butt and thighs mounted around the collection machine sped up and a barely heard (and easily ignored by Lily) growl of "take my seed, Lily" briefly preceded his ejaculation into the collection machine.

As #24793 panted lightly and leaned against the collection machine, Lily checked the tablet again. Definitely an above average day, he'd set a new maximum ejaculation record of 7.99 ml, despite the previous record being only possible after a week without one.
Lily glanced up at #24793, opening her mouth to congratulate him, but was briefly rendered silent when her eyes met his and the tremendous amount of lust in them startled her, sending a bolt of arousal through her. Breaking the eye contact quickly, she mentioned the new development in a deliberately professional tone, ignoring the way #24793's gaze was riveted to the miniature tents her huge nipples had inexplicably pitched in her lab coat.
"Congratulations #24793, this could be a positive development, I expect the programmers will want to install a new iteration by next week to try and improve these results if possible."

#24793 appeared to have calmed down slightly, although his cock was still half-erect, an unusual situation.

"I'll check in tomorrow, #24793, now put some clothes on, you'll scare the other nurses" A light chuckle jiggled her massive tits and nearly caused her to moan in pleasure, the motion rubbing her erect nipples against the fabric of her lab coat. Surprisingly, a twitch went through #24793's cock, but it kept deflating after, and she turned and left, heading for her quarters and the Long Dong dildo with attached 5 liter ejaculation pump. She needed some release before she continued her rounds, or she'd be liable to jump one of the subjects and mess up data collection.

~Author note: Retconned this chapter a bit as I realized the story I had ended up writing didn't fit the history.~