The King's Spoils

Not many ponies came this way, as was to be expected. After all, access was extremely limited, only her guards, a handful of scientists, and of course, Ferrous himself were permitted to enter the most secretive section of the complex. The entrance wasn’t hidden, it was just about smack in the center of the living quarters. But to the rest of the ponies living here, all this place was was where the infant clones came from. Every two weeks or so, another batch of three to four dozen would be hauled out and split up between caretaker’s who’s previous groups had just graduated.

The entrance itself was fairly large, salvaged from the mechanism operating a pre-war garage door. It had to be big to accommodate the padded carts used to transport the infants to processing. Just passed the door was a long ramp that spiraled down, deep into the earth, the remnants of an old bottling plant. The complex itself had been built around the crumbling remains of the warehouse, while the underground storeroom had been retrofitted into a makeshift laboratory. After, of course, they had removed the thousands of bottles of soft drink that had been piled up everywhere.

Ferrous walked down the ramp with a bit of spring to his step. This was the reason he had come here, and the closer he got the more excited he became. Not even the long, spiraling journey could discourage him, because hey, at least it was better than stairs. After a few more minutes of walking, the stallion finally reach the bottom floor, the ramp dumping out into a wide room with several doors leading in different directions. The dim fluorescent bulbs embedded in the high ceiling provided inadequate light to see clearly, but Ferrous didn’t need it. He knew exactly where he was going. Walking to the left most door in the room, he stopped for a moment and looked up to the backlit sign perched above it. “SUBJECT-01” it said in bold script.

Opening the door, Ferrous mentally scoffed, he hated that name, but it was what the scientists insisted they use. It kept things “impartial” they said, but to him it was straight up demeaning. The guards, at least those that were permitted to know what went on down here, called her the “Brood Mother”, which was a little better, he figured. But to him, she would always just be sweet little Stormy. His sweet little Stormy.

That day had started off just as any other day for Ferrous, the twelve year old colt rising with the sun along with his parents. The sooner he started on his chores for the day, the sooner he could finish, and the sooner he could play with his best friend in the whole world. Well, his world anyway. They lived in a small wooden shack, built many years ago by his father and grandfather. It was only one room, but the fireplace kept them warm and the roof kept them dry. Their home combined with a smattering of others to create the small fishing village of Nordfiske, nestled on the Northeastern coast of the Equestrian wastes, in what would one day become the district of Piscariam Boreus.

His his father left with the other stallions to fish, taking their skiffs to patrol the ice flows in the hopes of catching something substantial. Meanwhile, his mother did her best to maintain their small vegetable garden in the arid, sandy soil, as well as patch cloths and other routine repairs needed around the house. Ferrous hopped to his own duties, heading down to the rocky bay where several long lines had been set up since the previous day. He reeled each one back onto its spool with practiced hands, depositing any fish they brought in into a wheelbarrow. This day had a pretty good haul: seven char, five cod, and even a couple flounders. Not huge, but every fish meant another full belly for that night.

After dropping off his catch at the smokehouse, Ferrous rushed back to the shore, grabbing a spool of line and hopping into his own little skiff. He paddled out into the bay, unspooling the line as he went. Each hook he baited with a piece of last night’s dinner before plopping it into the water and continuing further out. With 30 hooks on each line, it was a time consuming process, and one he would have to repeat four more times, but it made him feel good, knowing that he could be useful to the village.

By midday, Ferrous had completed his task, the young colt rushing through the village to let his mother know that he was going to spend the rest of his day playing.

“Alright,” she said, preoccupied with patching a hole in her husband’s long johns, “but remember, be home before dinner this time, okay?”

“Okay mom!” Ferrous replied excitedly, already running back out of the house, slamming the door shut behind him in his haste. In mere seconds, the boy had found himself standing in front of the door of a shack on the other side of the village, pounding on it with all the might his little body could muster. Almost immediately, he could hear the pitter patter of tiny feet scurrying across the wooden floor inside. Then, the knob slowly turned and the door swung open with a prolonged creak.

Standing in the entryway was a small filly, a head shorter than Ferrous, with a deep blue coat and lighter blue mane. Bright white freckles adorned her face, while her dazzling turquoise eyes seemed to sparkle in the noon sun. Though hidden by a set of hand made overalls, her cutie marks resembled a rain cloud unleashing its payload over a tumultuous stretch of ocean. This was the colt’s best friend since they were babies, Stormwater Seas.

“Hi!” the blue filly said, chipper as always.

“Uh, h-hi,” replied the colt, mostly lost in her brilliant eyes. This caused a giggle to escape from the happy go-lucky girl, giving him a slight punch to the shoulder. Turning around, she shout back to her mother.

“Mommy! I’m going out to play with Ferrous!”

“Okay! Be safe!” came a voice from somewhere inside the house. Stepping out onto the path, Stormwater closed the door behind her before turning around to once again face the colt. She stood there for a moment expectantly, waiting for him to say something. When all Ferrous did was stand there staring, she laughed again and rolled her eyes. Grabbing his arm, the filly sped off away from the house, bringing her unresponsive friend with her.

“Wait!” he shouted, shaken from his stupor in his attempt to keep up, trying his best to not be dragged along the ground by the wrist. “Where are we going?”

“Duh!” she responded, as though it were the most obvious thing in the world. “To the secret place!”

The “secret place”, as it turned out, was actually a pre-war military bunker built into the cliff face along the shore, the entrance hidden by multiple rocky outcroppings. The pair had stumbled upon it one day while messing around, climbing up and down the treacherous rock walls. They had kept its existence all to themselves, not wanting to tell the adults who might ruin their fun. Traveling through the winding corridors, the two made another discovery: this wasn’t just a fallout shelter, it was also an armory. Huge rooms filled with full sets of armor, as well as a full menagerie of weapons. Laser rifles, assault rifles, shotguns, and snipers filled hundreds of weapon lockers. There were a number of robots sitting deactivated in charging stations: protectrons, assaultrons and sentry bots, as well as some of those big metal suits that Stormwater had called “power armor”.

As they spent time exploring the place, they learned more and more about it. Eventually they figured out how to turn on the bunker’s fusion reactor, restoring power and giving them access to the terminals located in the command and control center, deep in bowels of the complex. It was here where this particular trip started out, just like most other visits they made. But today was going to carry consequences that would change their lives forever.

“Well, what do you think?” Stormwater asked, standing behind her friend as he typed away at a terminal.

“I’m not really sure yet, it’s not saying what the problem is.” The screen began to flicker again before Ferrous pounded the top of the monitor once with his fist, fixing it for a few seconds before the flickering returned. “There doesn’t seem to be anything wrong with the terminal, but I can’t seem to...Oh! There it is!”

“What!? What is it?” the filly asked excitedly.

“There, in the error logs, ‘Insufficient power to run program’.”

“Insufficient power? Well how do we get sufficient power?”

“Hold on, i’m looking,” Ferrous said as the flickering resumed, making it almost impossible to read what was on the screen. “Gah! Stupid thing!” He searched through every file he could think of on the machine, going through system after system, skimming directories until finally he came across the diagnostics program.

“Okay, here we go. ‘Reactor malfunction, fuel rotator cuff damaged, please replace.’ It even says where to get a new one, they’re down in the maintenance storeroom.”

“Okay, so we fix the thingamawhatsit, and the power goes back to normal?”

“Looks like,” Ferrous replied, getting up from his chair. “Alright, let’s go.” The trip to the reactor took only a minute or two, the pair standing in front of a consol below a thick polycarbonate window with a full view of the generator, and a large metal door separating them from the machinery inside. Ferrous pressed a large red button located in the center of the consol with the word “OPEN” written in bold font. But instead of the door sliding open, as they expected, a robotic voice called out from speakers attached to the ceiling.

“Master clearance required to access restricted areas. Please insert identification.” And with that, a small black slot on the consol began to flash, blue, arrow shaped lights telling which way to swipe a card. The pair looked at each other, confused.

“Master clearance? What does that mean?” Ferrous asked his companion. Stormwater didn’t reply immediately, holding a hand over her mouth as she thought.

“Hmm,” she said after a while, “do you it means that thing with the picture of the old guy on it? It looks like it would fit in that,” she said, pointing to the card reader.

“Stormy, you’re a genius!” the brown furred colt exclaimed, causing the filly’s cheeks to flush a light pink. “Here, hold this. I’ll be right back.” He thrust the equipment he was holding into her hands and ran off back to the control center, leaving her there still blushing faintly.

When he returned, Ferrous went straight up to console and inserted the card, sliding it into place. Immediately the robotic voice range out again with a curt “Access granted.” Then followed a loud, piercing alarm, as well as a pair of flashing yellow lights affixed above either side of the large door. A moment later, the door began to slide, the grinding and squealing, as well as the bits of rust it shed as it went along, betraying its hundreds of years of disuse. When the door had fully opened, however, what it revealed was not what they had been expecting. Instead of the reactor, all that was beyond it was yet another door. Once again, the robotic voice chimed in. “Please enter the decontamination chamber.”

The two simply stood there for a moment, not sure how much they wanted to proceed, until Ferrous turned to his friend. “W-well, what you waiting for?” he said to her nervously.

“What? Why me?” she responded, clearly apprehensive about entering such a well guarded place.

“Because, you’re already holding the thing!” he said, giving her a gentle push towards the opening. “Come on Stormy, don’t be such a baby.” Very slowly, the filly began to walk into the room, gripping the replacement part tightly to her chest, as though it would provide some sort of comfort.

When she had fully entered the chamber, Ferrous pressed another large button on the console, this time a bright yellow one labeled “CLOSE”. Once again, the big door screeched to life, slowly closing until it had shut with a hiss of pressurization. Finally, the annoying klaxons and flashing lights ceased.

From inside the chamber, Stormwater watched as the second door in front of her began to open, slowly revealing the towering machine she was there to fix. Instantly she felt something was wrong. Though her core was cool in the chilly metal passageways, her skin began to get hot, almost unbearably hot. In addition, she could feel a strange buzzing sensation bouncing around in her head, creating a strange tingle in the base of her jaw. Steeling herself, the filly closed her eyes and tried to ignore the discomfort, taking a deep breath before once more facing her objective. Daintily, she stepped out into the poorly lit area, taking a moment to observe her surroundings. The room was curved with smooth walls, almost like a big, round pit. In the center was the hulking device, a low, droning hum emanating from somewhere deep within it. To her left was the curved window looking back out, Ferrous eagerly waving to her from the other side.

“Hi!” his energetic voice echoed all around her, though it was slightly tinny. There must have been an intercom in here as well, somewhere. Her response was to give a single tentative wave back, still clinging to the cuff, her face clearly showing her anxiety.

“Okay,” came his voice again, “do you see the pipe running up from the ground into the big round thing on stilts?” Stormwater turned her attention back the machine, locating what it was Ferrous was talking about. Slowly she approached it, that strange buzzing getting louder with every step.

“I’ll take that as a yes,” Ferrous said sarcastically. “Okay, at the top of the pipe there’s a frisbee lookin’ thing just like what you’re holding. You have to undo the latches holding it in place, then put the new one on.” She could barely hear him at this point, the unnatural noise sounding like a swarm of wasps had invaded her brain. She worked quickly, squinting and clenching her teeth through the pain. She undid the first latch, and then the second. After releasing the sixth and final clamp, she carefully removed the disk. All at once everything she had been experiencing increased ten fold, hitting her like a flood and almost knocking her off her feet. She couldn’t hear anything anymore, not even her own screaming. She lost all sense of touch as well, only able to feel the intense heat.

As quickly as she could, Stormwater replaced the cuff and fumbled with the locks, wanting nothing more than to be out of that room. As each latch was hooked, the tormenting force dimmed, until finally it was back to the level she had experienced upon first entering the room. Leaving the broken part on the floor, the desperate filly ran back to the open door, entering the chamber and going right to the barrier separating her from security.

“Open! Open! Open!” she cried through tears, frantically pounding on the metal gate. Ferrous quickly punched the “OPEN” button a second time, the flashing yellow lights and blaring sirens starting up again. Inside the chamber, the door to the reactor slid shut, Stormwater still banging away on the other side. Once it had closed completely, the filly was drenched in what smelled like soap, sprayers in the ceiling offering a downpour of the sudsy liquid.

After about a minute of soaking, the flow abruptly stopped, the same robotic voice declaring, “Decontamination complete.” Finally, the outer doors began to once again grind their way open. The moment a space large enough appeared, the little filly ran out to freedom, and right into the waiting arms of her companion.

Gripping his shirt tightly, Stormwater leaned her entire weight into Ferrous, knocking them both down as she openly cried into his chest, burying her forehead under his chin. Ferrous wrapped both his arms around her, giving the scared filly a comforting squeeze. “Hey, it’s okay. It’s okay,” he said gently, not minding his clothes getting soaking wet. They stayed like that for almost half an hour, until she had finally calmed down enough to get up and go home. They told their mothers that she had fallen in the water by the rocks, agreeing to continue to keep their discovery a secret. It wouldn’t be until much later that they would learn that that amount of thaumaturgic radiation should have been more that enough to kill her.

At first it seemed there would be no consequences from Stormwater’s unwitting brush with death. A year passed and nothing seemed to change. However, as the filly went through puberty, and made the transition to becoming a mare, it became clear that she wasn’t the same as the other girls in the village. The first difference that made itself known was how easily she could gain weight. Despite the fish stocks being down for a couple seasons, Stormwater went from being a rail thin preteen to a fairly chubby teenager. At 15 she had already passed 200lbs, making her heavier than many of the full grown stallions. This started rumors that her parents had been sneaking extra food when nopony was looking. In fact, it had gotten so bad that the village elder had to step in and essentially tell everypony else to knock it off and leave them alone.

The next development was one that caused even more suspicion, though this time predominantly among the mares of town. By the time she was 16, Stoermwater’s bust was by far bigger than any other mare’s. Not only that, but her then cantaloupe sized boobs wouldn’t stop getting larger. Every other week, the developing mare had to get her bra let out.

And that led to the final, strangest change. When she was just 17 years old, Stormwater became pregnant. The only problem was, she was most definitely still a virgin. Of course nopony else believed her. They all just thought she and Ferrous had gotten frisky, the did spend nearly every day together, after all. Except that theory started to fall apart quickly as she progressed. Each day Stormwater’s stomach stretched out further, forming a large baby bump just days after she had found out she was even pregnant. After just two weeks, she had given birth. What also shocked everypony involved was that this baby looked strangely, no, freakishly similar to a little colt who had been born only six months before.

She didn’t keep him, another family offering to adopt him before they trekked out of the village, heading further south. Everypony tried to simply forget what had happened, and pretend that it hadn’t. That became very hard when just a couple months later, she and Ferrous were gawking at how cute a newborn filly was, and the next day she had woken up with terrible morning sickness. Sure enough, two weeks later out popped a living replica of that exact filly.

Stormwater didn’t know what to do. No pony was willing to adopt her this time. She was forced to take care of this filly, which lead to the discovery of yet another strange anomaly. It was after this pregnancy that Stormwater began to lactate, her now watermelon sized breasts filling up for the first time. As the filly suckled from her mother’s tit, it became clear that she wasn’t developing normally. After just two months, she was already walking, and by six months she was forming full sentences. At eight months her baby teeth began falling out, and at ten months she was just as tall as Stormwater. It was at this point she decided to cut her “daughter” off, feeling too weird about someone who at least looked as old as her nursing from her.

The filly herself, despite looking “normal”, clearly wasn’t entirely standard. Perhaps it was her accelerated maturation not giving her brain enough time to properly form, but she seemed...different. She was intelligent enough, she followed directions fine and she gave clear and appropriate answers when asked a question. But she lacked a certain independence that most other fillies her “age” were supposed to have. It made her fairly easy to deal with, but for Stormwater, it kinda freaked her out. Well, freaked her out more anyway.

It was all very distressing to Stormwater and her family, but to Ferrous and his young mind, it was starting to give him ideas. Through subtle, inconspicuous experimentation, he learned as much as he could about her strange inner workings. He ascertained that Stormwater didn’t even need to see a living pony to get unnaturally pregnant. If he could make her feel strongly enough about a drawing of somepony, even one completely made up, two weeks later out would pop an exact copy.

Slowly, Ferrous used her to build his army, using the supplies found in the armory to supply his custom designed soldiers, until finally, he was ready to strike.

All of that planning, all of that building, lead up to now. Ferrous was the king of his castle, the ruler of over a million ponies, but he would never forget the mare that had made it all possible. He strolled quickly through the short connecting hallway, passing another pair of guards as they bowed to either side. Finally, he came to the last door, the final barrier separating him from the one he loved. As he pushed it open, he began to grin wildly as his sweet little Stormy came into view. Although, there was absolutely nothing “little” about her any more.

The room itself was fairly large, probably the size of a small ballroom, and dimly lit. This was the place the old soda plant had kept their stock ready to be shipped. What took the place of soda now, was a daunting figure sat in the center of the chamber. And by Celestia was it, or rather, she massive.

From the angle where Ferrous stood, all he could see was one incredible, deep blue mound that squished out across the floor, swelling up to more than twice his height. As the stallion walked to the side, another mound came into view, joining its twin along a deep crevice that stretched their entire length. Close to the top, a relatively tiny tuft of light blue hair stuck out between the hills, revealing the identity of these monuments to excess. Ferrous was in fact gazing upon the biggest, fattest pair of ass cheeks that he had ever seen, each one nearly the size of an elephant.

Walking up to one cheek, Ferrous reached out and placed a hand onto the round surface, delicately stroking the silky fur that covered it in long, sweeping circles. Slowly he pressed his hand into the yielding flesh, letting it sink further and further in until his shoulder had disappeared. Then, he repeated the process with his other hand, both arms now fully inserted. For support, he leaned into the jiggling mass, most of his legs and torso submerging as well. Now that he had almost entirely been consumed by Stormwater’s colossal butt, he squeezed his arms together, collecting as much ass fat as he could and pressing his forehead into it, giving the soft, warm fat a loving kiss as well.

Extracting himself from the warm embrace of her rump, Ferrous continued walking around the gigantic mare, dragging three fingers through her side as he went. Her cutie marks, now the size of billboards, were so stretched and distorted that they were almost unrecognizable. Looking up, he could see a single arm, or really, a round sleeve of fat under which an arm lay. All that was visible were her fingers, looking less like a hand and more like nubs protruding from a rolled up blanket.

As he reached her front, three distinct shapes came into view. Her belly spread out over the floor, completely swallowing her legs while also creating a shelf upon which two breasts, each about the size of the cart he rode in on, sat comfortably. Ferrous tested the feel of the over inflated milk bags, pressing into them and reveling at how soft they were, though with an underlying hint of firmness.

From his position, Ferrous was unable to see Stormwater’s head, however he could hear a quiet, gentle snoring coming from the top of her humongous body. Reaching up, he gripped the closest tit, digging his hands in and using it as leverage as he lifted himself up unto the mountainous bossom. Once on top, he straddled it between his legs, scooting forward while being careful not to get thrown off by the sloshing waves his movement caused.

Upon summiting her boobs, Ferrous climbed up carefully and positioned himself to place his face in front of hers. He smiled as he watched her sleep, her massive cheeks dimpling and her multiple chins transitioning smoothly into the tire of fat that swaddled her neck. Directly behind her head, the bulbous cheeks of her butt pressed up against her, and still continued to swell upwards for a few more feet. As she slept, she leaned her head back and into the soft ass fat, using it as a natural, ever present pillow.

Reaching out, Ferrous gently caressed one of Stormwater’s big cheeks, running his thumb up and down in a soothing manner.

“Stormy,” he said softly. “Hey, Stormy.” Slowly, the beyond obese mare’s eyes drifted open, her pupils dilating slightly in the dim light. With her vision still blurry, she yawned intensely, smacking her lips together and wetting her tongue. As the world came into focus, she began to recognize the figure that was peering at her.

“Ferrous?” she asked groggily. Once her vision was fully clear, and she could plainly see him nodding in front of her, Stormwater broke into a broad smile, her fat face creasing in her joy.

“Ferrous!” she shouted, and for a moment the stallion thought he could sense movement under him, as though the big mare had attempted to use her atrophied muscles to move the thousands of pounds of fat covering any one part of her body. “It’s so good to see you,” she continued, “I’ve really missed you.”

“I missed you too,” the stallion replied before leaning in and connecting his lips with her’s. The two stayed like that for several seconds, enraptured in the kiss as their tongues danced together. After breaking, Ferrous leaned in further, nuzzling his cheek against her much fatter one. “We don’t see each other enough,” he lamented, pulling away to resume gazing into her beautiful turquoise eyes.

“You’re telling me!” she exclaimed with a bright laugh. “Without you here, all I have to do is sit on my big ass and pump out babies! At least you’re not too fat to move!”

Ferrous laughed as well, happy beyond words to hear his love’s cheery voice once again. “Well, you’ve got me there, honey.” He leaned back in and took another quick smooch. “So how have you been? Besides, ya know, the whole ‘too fat to move’ thing?”

“Ugh, bored! That’s how i’ve been!” she said exasperatedly. “I mean, don’t get me wrong, feeding time is always nice. But when I’m not eating, I don’t have anyone to talk to! The guards are terrible for conversation!”

“Hm,” Ferrous mumbled, stroking the brown tuft under his chin with a thumb and index finger. “There may be something I can do to help with that.”

“Oh?” Stormwater replied, lifting her eyebrows in optimism. “How?”

“One of the caretakers, one I know very well, likes to eat almost as much as you. In a few more weeks, she’s probably beach herself just like you did.” To emphasize his point, Ferrous wound back a hand and slapped the bed of belly fat he was currently laying on, sending it, as well as himself, wobbling heavily. “Once her butt pins her to the ground, we can probably roll her in here and she could keep you company.”

“That’d be awesome,” the big mare said, “but doesn’t she still have to take care of a batch?”

“Eh,” Ferrous replied dismissively, “we can just get a new one. Motherly mares aren’t really hard to find in the empire.”

“Oh, you’re too good to me. Come here,” she commanded, and Ferrous was only too happy to oblige. They locked lips now for the third time, this one even more passionate that the first. Once they separated, Stormwater looked at her lover with an almost predatory gaze, clearly hungry for something other than food.

“Now,” she said with a husky tone. “I know you’re not just here to chat.”

“Oh, frisky already are you?” Her only response was a giddy smile. “Well then, why waste time?” With that, the stallion slid back down the way he came, using her boobs as a ramp before planting both feet onto the ground.

To begin, Ferrous began massaging the mare’s enormous tits, running his hands up and down, pressing into them and sloshing the hundreds of gallons of milk within. His movements elicited a deep groan from atop the mountain of lard, a sign for him to keep going. Focusing on one breast, he slowly massaged towards the tip, cupping his hand over her wide areola and rolling her rock hard nipple between his fingers. More moaning followed, as well as a small drop of white liquid seeping out of the erect teat.

“Mmnnnuh, huff, ha,” was Stormwater’s response, a mix of moans, groans and panting. Her pussy warmed up as juices began to drip from it, soaking the fur that surrounded it. With her vagina buried under thousands of pounds of both thigh and belly fat, as well as her arms being locked to her sides, Stormwater was incapable of pleasuring herself. The last time she had received any satisfaction was Ferrous’ last visit over two months ago. The stallion in question continued teasing her nipple, causing an unbearably wonderful tingle to flood across her sensitive boobs, joining the one tormenting her underused snatch.

“Careful baby, my t-tits are so fucking f-fuuuuuu, oh sh-shit, huff, full.” And she wasn’t lying. Ferrous had requested that to prepare for his visit, the staff would refrain from milking her for a couple days, the result being outrageously full, and incredibly tender breasts.

Leaning down, Ferrous wrapped his lips around the nipple, caressing it with his tongue and eliciting a squeele of pleasure from the blimp of pony. Puckering his lips, he gave it a long, hard suck, a torrent of delicious, warm milk flooding into his mouth. He swallowed it all in one gulp, immediately going for another pull, guzzling down all that he could. Again and again, Ferrous suckled from his lover’s tit, a line of the white liquid running down his chin. Stormwater herself was only able to huff and puff, lost in the overwhelming sensations flooding her brain.

As Ferrous drank, the milk’s mutagen properties began to take their effect. When consumed by mares, massive weight gain and overproduction of the same altered milk followed. When consumed by stallions, however, a completely different set of effects took hold.

Almost instantaneously, Ferrous could feel the start of these changes. Within the stallion’s balls, a warm, fluttery feeling accompanied the rush of blood into his penis. As his dick inflated, so too did his testicles, the organs stretching like balloons as they produced more and more semen. Like his balls, Ferrous’ penis grew quickly. But instead of stopping at its normal length, the sensitive organ continued to swell, growing past all manner of sensibility.

It was now that the horny stallion had realized that he had forgotten to take off his pants before starting, an error that would spell the end for this pair of trousers. His dick and balls pressed tightly against the leather garment, stretching and tearing seams as they went. Eventually, the front of his pants burst open, revealing the full glory of his genitals to the world.

At this point, Ferrous’ pecker was 16 inches long, and still it continued to grow; 20 inches, two feet, three feet. The organ pushed out, growing not only in length, but girth as well. And his genitals weren’t the only things growing. Though by comparison it wasn’t much, the stallions muscles also began to pump up, pecs hardening into dense plates, abs appearing where they hadn’t been before, and biceps stretching into the size and shape of cantaloupes. He would need the extra strength, as when his growth finally stopped, his reproductive equipment was well and truly massive.

Ferrous’ penis was now nearly five feet long, rising just above his head, and as thick as his newly muscled arms. He placed a hand on its veiny shaft, causing a thick glob of pre to squirt from its tip. Below, a pair of testes the size of basketballs hung suspended in their fuzzy sack.

Now fully equipped, Ferrous walked around Stormwater until he reached her titanic butt, looking up at the mounds of fat that towered above him. Gently, he pressed his shaft against her ass, slipping it between her furry cheeks, bringing a deep grunt from the stallion and a soft moan from the mare. After a few seconds of hot dogging, Ferrous then, completely wordlessly, thrust his tip deep into her crack, and continued pushing until finally it found paydirt.

The swollen tip pressed hard against Stormwater’s anus, a shocked scream escaping from the immobile mare. In a single, smooth motion, Ferrous thrust into her waiting entrance, stretching it open to accommodate his inflated package. As the pumped up stallion thrust, his hips pounded into the soft globes, sending them quaking violently. To prevent himself from being knocked backwards, Ferrous had to grab ahold of the blubbery glutes, shaking himself in the process. He continued to rail her in the ass until finally, after several minutes, he felt the familiar pulsating flow from his tip to the base of his shaft.

Abruptly, Ferrous pulled out from Stormwater’s ass, being careful not to so much as breathe on his throbbing dick so as to preserving his orgasm. Awkwardly, he waddled back to her belly, swollen balls swaying in front of powerful legs, and saddled up with his tip pointed directly at it. Slowly, he pushed his enormous penis underneath the apron of fat, gritting his teeth and clenching hard to avoid cumming all over the fat mare’s undercarriage. Using his newly muscled arms, he lifted her big gut, or at least some of it, to ease his dick’s passage. As he went, he could faintly feel the firmness of a newly minted batch, not yet developed enough to show under her layers and layers of belly fat.

Ferrous felt the change in pressure as he plunged into her thighs, the compressed fat on either side squeezing hard against him. At last, he felt his tip press against the wet, puffy lips of her slit, Stormwater letting out a gasp upon contact.

“Oh, f-fuck!” she moaned. “Do it baby, send my fat ass to heaven!” Ferrous was not one to object. He pushed himself into her, his hips slamming into the soft belly and sending it wobbling. In and out he went, gripping onto her colossal boobs for support. Stormwater went cross eyed, her neglected pussy now screaming in pleasure as it stretched to fit Ferrous’ massive package. Biting her lip, the immobile mare closed her eyes and leaned her head back, pressing it into the pillowy softness of her ass cheeks.

Ferrous could feel his finale approaching, pumping harder as the sensations reached their peak. With his hardest thrust yet, white, sticky cum exploded into his lover, filling her to the brim with fresh seed. The powerful orgasm racked his body, sending his muscles twitching in ecstacy. But after a moment to enjoy his high, Ferrous resumed his pumping. Stormwater was not yet over the edge, and he wouldn’t stop until she was satisfied. He soldiered on, ignoring the slight stinging of too much friction on his stretched out dick skin, until finally she reached her own climax, her snatch gripping and clenching around his already spent tool. A loud “Yes!” came from atop the jiggling mountain of fat.

Ferrous carefully pulled out, puffing slightly as he recovered from the intense round of sex. Once again, he climbed the slope of her breasts until he was level with her round face. Without even a word, the exhausted stallion went in for a deep kiss. The pair could feel the heat from each other’s cheeks as they made out, their steamy session having worn them both down, though to be fair, it didn’t take much to tire out Stormwater these days.

As they separated, the rotund mare cooed, smiling widely. “I love you Ferrous. I love you so much.”

Ferrous reciprocated her smile and pushed the tip of his muzzle into hers in a gentle boop. “I love you too, Stormy.” With that, the pair closed their eyes and drifted off to sleep, Ferrous nestled cozily with Stormwater as his big, plush mattress.

Ferrous zipped up his new pair of pants, finally able to fit in them now that he had shrunk back down to his original proportions. He walked casually alongside a lab coat-sporting stallion as the two made their way down a dimly lit corridor.

“So,” Ferrous started, “how are the tests coming along?”

“Very well sir,” the gray furred unicorn responded evenly. “In fact, they are exceeding all of our expectations. It seems we have identified precisely which operons can be manipulated to code for the desired phenotypes. And fortunately, the retro subclinical delivery vector achieved a 99.95% transmission rate, meaning that only one exposure was required to be administered.”

“So,” Ferrous said slowly, shooting a confused glance towards the bespectacled stallion. “It worked?”

“Yes,” the scientist responded, a cheeky grin on his face as he returned Ferrous’ gaze. “It worked. See for yourself,” he said as he gestured to the end of the hall. In front of them was a very ordinary looking door set into the wall, and on its right was a long pane of glass looking in to a fairly spacious room. Ferrous stepped up to the window and peered into it.

The decor was somewhat homey, with a cool yellow wallpaper and brown wooden trim. Landscape paintings hung from the walls, and a pair of large bookcases dominated one corner. Along the back wall, underneath a ticking clock, sat a pony in an old wooden chair. The mare, a pegasus on account of the folded wings peeking out from behind her back, was very young, not much older than 20. She had soft pink fur and a flowing purple mane, as well as big, blue eyes. But those were trivial details as far as Ferrous was concerned.

The stallion’s eyes drifted over the unwitting mare’s body, enjoying what he saw. Her butt completely filled her seat, two soft booty cheeks flowing over the top of the chair. Her plush hips and thick thighs poured through the space both under and over the armrests, nearly swallowing them completely. The stretchy black leggings she had somehow gotten her fat ass into sported several tears along its seams. The mare’s swollen breasts sagged freely, unbound by clothes, as she held a leather bound book to her cherubic face. Serving as a platform for her heaving boobs, was the mare’s wonderfully pregnant belly, surging out to extend beyond her knees. As she read, the mare rubbed one hand over her straining gut, the taught organ looking like a yoga ball sitting in her lap.

Ferrous stepped back from what was evidently a two-way mirror, still staring at the amazingly turgid mare. Slowly, his eyes drifted upward to a sign sitting just above the door, struggling slightly to read the dark lettering in the inadequate light.

SUBJECT-02