Skizhi wasn't sure about this. He held the silver ring in his hand, as his friend Likwit leaned over the table, pointing at the little buttons on it.
 
 
"Zis turns it on, and zis turns it off - oh and make sure you remove anything zat's stuck zrough it before hand! Zat's how I got zis ring, actually, a friend was using it and got, uh, pranked."
 
 
"Okay," Skizhi said, turning it around. The dark gray fur of his cheeks hid the slight blush. "But, I mean, is it.. can it help?"
 
 
"Of course it help!" Likwit patted the front of his loincloth, which held a fairly sizable bulge He flexed his arm, and then flicked a claw against the back of his shelltooth with a sharp clack. "Look at me, I am super big now, and I am very very virile!"
 
 
Skizhi was skeptical. Likwit had been acting more boisterous, with more of a swagger in his step - he had even been more flirtatious around the camp fire. Something was definitely different about him, but could it really be that easy?
 
 
"So what does he do?" Skizhi said. "I mean, does it hurt?"
 
 
"Nah, it's real simple and feels kind of nice. Since you're ze same as me," the Yinglet said, giving Skizhit a playful push on the shoulder, "You can just use it instead of me, and he'll zink zat you're me, so... free medicine!"
 
 
"Hmm." Skizhi scratched at his stomach, then shrugged. "Well, okay, but if I don't like it, I am taking it off and never using it again!"
 
 
"Sure, sure," Likwit tittered. "Such a little baby!" He took the portal back from Skizhi, and pressed the button to turn it on. The center of the ring flared into a peculiar glowing miasma of blue and purple. Skizhi could almost make out something on the other side, a room of some sort, with a figure moving around. "Zis is around ze time I would be getting MY medicine, so.." He reached down and pulled Skizhi's loincloth out of the way, revealing the sleek vent.
 
 
Skizhi held back a yip, his cheeks blushing hotter as the bigger Yinglet casually fingered up into his slit, feeling around for the maleness hidden within. There was no particular prudeness between his kind, but it was unusual for one male to be so aggressive with another. Litwick pinched the tip of Skizhi's member between his fingers, and the smaller gray Yinglet yelped as his dick was roughly dragged out and into the open.
 
"Oh, yes, this will be much larger! You will see!" Litwick said, as he slipped his fingers in to pinch the root of Skizhi's maleness and dragged it out into the open as well. He waggled the limp length back and forth, slapping Skizhi's thighs with the floppy length. "Bigger, thicker, harder!"
 
 
Skizhi was excited. His member lengthened, the pink flesh growing tight and smooth and sleek in the other Yinglet's hand. "So, I just put it in there and wait? Does it tingle? Does it itch? Will it take very long?"
 
 
Likwit shook his head, holding Skizhi's firm erection up and out of the way. He pressed his palm against it, flattening it against Skizhi's belly, and stuffed his fingers back up inside the smaller Yinglet's vent! "Not quite, you'll have to put... where are they... you do have eggs, right?"
 
 
"N-no, I am a male!" Skizhi said, chittering agitatedly as the other male's fingers pried and goosed around inside him. "No eggs!"
 
 
"I think you do!" Likwit said, as his fingers probed deeper, pressing up uncomfortably into Skizhi's groin, until his knuckles had disappeared and his palm was flat against the reluctant Yinglet's groin. "I'm pretty sure all males have TWO eggs, deep inside.. ahh! Here they are!"
 
 
Skizhi groaned as he felt a deep, hard poke into something very sensitive in his abdomen. It made his belly ache, his arms crossing protectively over it, his large ears flicking forward and then back as he felt those fingers wedge and squeeze around something inside him.
 
 
"I don't... think that should be.... moved!" Skizhi gasped, as his friend twisted his wrist, gripping and pulling at the handful of 'egg' that he had found. Skizhi felt something slide free from inside him, a warm and smooth sensation similar to a tooth being pulled out. It shifted downwards and his body autonomously began to clench, squeezing down around it until it splurped out of his vent and into Likwit's palm. "Agh!"
 
 
"Don't worry, this is normal! You have two of these! We keep them inside, but you'll need to have them outside for this!" Likwit said. He took Skizhi's paw, sliding the heavy rounded pinkish egg into the palm of it. Skizhi whined, as he could feel his paw very sensitively, the dry scrapy fingers feeling hot and rough against the naked egg flesh.
 
 
"But! I don't think- How will I put this back in?!" Skizhi complained, as Likwit stuffed his hand back up inside him, digging out the second one. "I can't just walk around with this in my hand!"
 
 
He plucked at the cord that trailed from his egg back up into his groin, an umbilical cord that connected his 'baby' to himself. He had seen eggs like this before, hanging between the legs of animals that the hunters brought back to the camp, but he didn't know he had them.
 
 
The second egg flopped free, and Likwit gave it a playful squeeze, making Likwit curl over with the casual roughness of his friend's paw around his sensitive nugget. "Careful!"
 
 
"I'm being careful, no worries!" Likwit said, cheerfully. He took the portal in hand, and crammed Skizhi's ball down into it. The rounded egg didn't quite fit, the egg shaped organ flattening at the top and bottom as it was crushed in between the perfectly round inner diameter of the torus. Skizhi squeaked at the blossom of fresh pain in his groin. "Here, put the other one in too!"
"O-okay," Skizhi said, frowning unhappily. His whole body wanted to curl up, his knees shaking as he carefully lined up the organ at the round portal. He could feel his other ball, dangling in a cool dry environment, but he couldn't see it, his cord disappearing into nothing. He gently nudged the second ball into the portal, biting his lip as he tried to carefully arrange it so that it didn't squeeze against his naked ball cord too much.
 
 
SLAP! Likwit slammed his open palm down on top of the other Yinglet's egg, plowing it down through with a sudden spike of nauseating pain that curdled deep in Skizhi's gut. He couldn't stand upright anymore, curling up and groaning in the throbbing pain the casual slap had laid into his egg.
 
 
"You're doing great!" Likwit said, rubbing his greasy hand against Skizhi's forehead. The Yinglet could smell his scent on Likwit's palm, his cheeks burning as Likwit rubbed SKizhi's vent musk over his own head fur. "Now you just have to put your penis in there, as well. I'll let you do that, since it's all hard and stuff. You probably should have put that in first!"
 
 
There was no way that his eggs would have fit into the portal around the bulk of his member though! His shaft may not be the biggest of the Yinglet shafts available in the clan, but his eggs had certainly struggled to fit through the small portal. Now, as Skizhi bent his maleness down, he found that it couldn't quite fit, the tip protruding an inch or so past the further ring of the portal. Skizhi tugged at the ring, and feld his two eggs being squeezed against each other as they each tried to squeeze through the portal at the same time. The naked, raw sensation of his cords being stretched, with nothing to protect or hold his eggs in place, made Skizhi's eyes water, but he was able to push and wedge his shaft down until the tip scraped past the edge of the metal ring and flop through into the other side.
 
 
"You did it!" Likwit said, as he clapped Skizhi on the shoulder. The Yinglet felt silly, holding a silver loop to his groin, with nothing sticking through it on the other side. "I'll make us some moss tea, while you just sit back and relax!"
 
 
"Okay," Skizhi said, but he couldn't help but feel nervous, like there was something very bad about to happen. He watched the portal, making sure to keep his fingers away from the button that would turn it off. That would be the worst thing that could happen... right?
 
 
* ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ *
In another time and place
* ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ * ~ *
 
 
Doctor Rutok, Dragonborn doctor of town Rienhof, put down his pencil and looked over to the lab area, which glowed as the portal activated. His subject was right on time, as expected. He stood up, stretching his arms as the portal disgorged a Yinglet testicle into the open air beneath it. He picked up his tablet, taking down notes, and walked into the alchemical lab, as the second nut slid in behind it.
 
 
"Subject appears in good health, though slightly smaller than last week. The experiments are supposed to create permanent change, it is troublesome to think that the effects are not permanent. I will need to push forward, push harder and make sure that this time the effects are complete. These Yinglet's natural systems are simply too resilient, and must be completely replaced, otherwise they'll reject the supportive stem cells."
 
 
"Uh, Doctor, that's a bold assumption to make," the slender tabaxi said from the doorway, arms folded as he peered into the lab room. "There's a lot of reasons why their testicles may have shrunk between sessions; dehydration, for example, or-"
 
 
"Silence, Nerd!" Doctor Rutok said, gesturing for his assistant to leave. "I am the doctor, I am the one who devised the experiment, I am the one who knows what is going on!" He grumbled, eyes narrowing as he glared at the sleek pink Yinglet penis that was now poking accusingly at him. "And it's only a coincidence that I just happened to finish the final solution."
 
 
"You shouldn't jump to the final session, though," Nerd said, the tabaxi picking between his teeth with one claw. "You are still feeling out the Yinglet's resistances and and endurance limits, if you push too hard-"
 
 
"Nonsense, this Yinglet has undergone four sessions, each one more stressful than the last. He's shown remarkable resilience in each situation, and I'm sure that I can skip a few sessions, he's clearly capable of handling the excess 'work load'. Go fetch us some lunch, and I'll get this started; by the time you get back, he'll be fully... inoculated."
 
 
"Yes, Doctor Rutok," the tabaxi said, pushing away from the wall with a roll of his eyes as he headed out, leaving the dragonborn alone with his silly, impulsive 'experiments'.
 
 
Dr. Rutok was alone with the Yinglet, his tools, and a perverted dream that he was finally going to make a reality. He took the portal down from it's shelf, giving the displayed, naked gentials a quick once over to make sure that they were not wounded, infected, or (most importantly) bugged. He took the testicles in each palm and squeezed, grinding his thumb over the squishy soft egg-shaped testicle, feeling for any solid pieces, searching for any residue of magic. They seemed fine, though Dr. Rutok was surprised at how soft and flexible they felt - they were almost as soft as they had been the first time Dr. Rutok had gotten to handle them, before the heavy duty resilience training that would protect them from exploding with the later experiments. He gave the left one a firmer squeeze, pushing his thumb tip into the flesh and distending it, causing it to bulge out around it as he pushed his thumb down nearly to the center of his palm. The flesh turned white as the blood was squeezed out of it, the depression remaining even as he pulled his thumb back out, slowly refilling as the innards settled back into place. Interesting. Very interesting. He would need to remember to take notes about this, to review later.
 
 
He was eager to begin the experiment, though. He tossed the portal onto the desk, the metal and the genitals tumbling over each other before the solid heavy ring flopped flat on the desk, with the half-hard cock flopping back and forth in a lazy circle above it. Dr. Rutok set down his tools. First was the heavy rubber tube, about a quarter inch across, freshly sanitized with boiling water poured down through the center of it. A souching bulb, a bit of lubricant, a pressure band, aaand.. the magical elixir. It was still quite warm, having been simmered with the enchanting alchemical ingredients that would give it the power it needed to overcome the Yinglet's natural resistance. He had only planned on using about half, and keeping the other half to study, but knowing what he knew now, he would use the entire potion. The Yinglet might be uncomfortable, but... by this point, having done this four times already, Dr. Rutok was sure that he could handle it.
 
 
The Yinglet's dick was half hard, but firmed up easily as the dragonboard wrapped his dry warm paw around it. Dr. Rutok peeled the tip of the penis back, stretching the lips away from each other and baring the soft, slick, smooth pink flesh of the inner lining of the Yinglet's urethra. He pressed the rubbery tube down into the soft flesh, stretching the narrow piss-slit around the flexible catheter. The tube was still quite warm from being recently sterilized, the rubber squeaking as it caught and rubbed against the Yinglet's flesh, and the good doctor could feel the slender penis bulge outwards as the tube was goosed deeper and deeper into the warm flesh.
 
 
From his previous experiments, he had learned that the yinglet's reproductive system included about four inches of extra tissue before reaching the testicles, and he wanted to ensure that a maximum amount of formula made it into the Yinglet's groin. He twisted as he pushed, feeling the occasional resistance that quickly yielded with a sleek push and jam of his fingers to force the industrial tubing down inside. The penis shifted, flexing and throbbing, which - while unusual to the dragonborn - was expected at this point. Yinglet's seemed to enjoy having their junk, and it seemed that the rougher Dr. Rutok was with the spindly bits of flesh, the more eagerly their cocks strained.
 
 
Dr. Rutok had not been paying attention to how much of the rubber tubing he had been threading down into the Yinglet's shaft, but he saw now that the left testicle's cord was jutting stiffly forward. He tugged backwards, then pushed down in, and the tube wiggled, expanding into the tender, narrow cords. That was further than he had planned on pushing the rubber tubing - there was a real risk that if he pushed any further, that the narrow cords would simple tear from the internal pressure.
 
 
'You can't make an omelette without cracking a few eggs,' he thought, wiggling and twisting the rubber tube down through the cord anyways. The crinkled, knobbled tissue flattened and stretched out around the smooth cylinder of rubber like an old sock being stretched over a too-small sock. He was careful, but not too careful - he was on a schedule after all. When the tube had nestled flat against the puffy cum-sack that was attached to the back of the Yinglet's testicle, he finally put the rubber tube down, and picked up the fresh, hot, simmering concoction and the funnel.
 
 
The rubber absorbed most of the excess heat, as he poured the fluid down into the funnel, letting it fill the foot-long length of tube that filled the Yinglet's groin. The fluid would probably scald the fluid that was already filling the Yinglet's epididymus, but that was all Yinglet sperm and of no value to Dr. Rutok.
 
 
The sperm sack began to bulge and swell out, turning a bright pink as the hot fluid swirled in amongst the reserved sperm and other fluids. The fluid that was being poured down into the testicle had been specially cultivated; rather than seeking out eggs to fertilize, it was enchanted instead to seek out and impregnant stem cells. Not sperms; sperms were the end product. Dr. Rutok's sperm was looking for the factories themselves. The existing sperms were easily destroyed, the larger dragonborn seed bludgeoning and crushing the weaker sperms, and then slurping the crushed gametes up, absorbing their lipids and sugars to empower themselves.
 
 
It was probably not the most p pleasant feeling for the patient, feeling the stinging fluids burning their way from the epididymis into the testicles themselves. The warm fluid tingled as they probed their way into exit-only passages, bullying their way deeper and deeper into the dense, heavy tissues, seeking out the seed making cells that created the sperms themselves.
 
 
After about half of the liquid had been poured down the tube, Dr. Rutok put the vial to the side and picked up the douching bulb. It was just an ovaloid hollow bulb, flexible, and he pushed the tip of it into the end of the Yinglet's penis, notching it into the fluid that filled the tube, and squeezed the douche. Air pushed down into the rubber tubing, and with nowhere else to go, it forced the warm fluid down deeper into the Yinglet's testicle.
 
 
The ball itself swelled outwards, as the hot sauce was forcibly permeated into the tender flesh. The vesicles crinkled as they were teased, separated and invaded, and Skizhi's raw, naked germ cells were finally breached by the dragonborn's augmented sperm. These were the sacred purveyors of the Yinglet's gametes, where his DNA was separated and packaged into sperms, and now Dr. Rutok's sperm was breaching them. What had been Skizhi's DNA was slurped right out of the cells, leaving the framework of genetic propagation intact but missing the code that it needed to create fertile sperm. Dr. Rutok's sperm, each finding a different gamete to impregnate, supplied that missing DNA. On a microscopic level, all through the Yinglet's testicle, raw primal Dragonborn DNA was injected into millions of gametes, replacing the softer, simpler Yinglet DNA with the more virile and powerful reptilian variant.
 
 
Within a couple minutes, there would be no trace of the original DNA remaining. Every cell of the Yinglet's testicle would be replaced, injected and overwhelmed with the new DNA, and would resume it's organic production of sperm cells uninterrupted. The testicle had no idea that it was making different sperm, though it might, over time, require more resources than the Yinglet sperm required to make this heavier, bulkier, more potent Dragonborne seed.
 
 
Skizhi's testicle looked swollen and heavy by the time Dr. Rutok moved onto the other one, tugging the tube smooth and slick partially out of the enflamed and swollen testicular cord. He used a small, soft rubber clamp to flatten the cord, the cords pinched just flat enough to keep anything from seeping back out from inside, but not so much as to damage anything. He pinched the very neck of the cord, just as it entered the portal ring, and carefully twisted and prodded with the tube until it was wiggling and prying its way down towards the other nut.
 
 
He had a little over half of the juice left, and while he had stuffed the first one completely full already, he really hated the idea of wasting any of it. The Yinglet's testicle would most likely be able to handle being forced full of his cum, right? Besides, Dragonborn had natural regenerative tendencies, so any damage that happened, at least to the Yinglet's testicles, would naturally repair itself. This would help to insure not only that Dr. Rutok's seed remained healthy and viable as it cooked inside the Yinglet's nuts, but also protect it from being replaced or rejected by other 'donors' in the future, or by the Yinglet's natural defense systems. They'd perhaps get swollen, tender and sensitive, and remain that way for a long long time, but the Yinglet's balls were being used for a much better purpose than just making Yinglet sperm!