“Buh-…Bye mom…! Dad! I’m gonna, mmmnh, m-miss you! Luh-love you…!” The young, 5-year-old filly called out to her parents, waving enthusiastically with a beaming, bright smile. Her pink twin ponytails swayed with every soft movement, their lengths reaching down to the ground, rivalling her tail. Chloe seemed to twitch slightly, jittering a bit, but she held herself in the end. It wasn’t but even a second after the lock had clicked and her mother and father had left for an all-weekend business trip that her expression changed, blush streaking over her features. Her hands dove down to the crotch of the tight overalls she wore, desperately rubbing the barely visible bulge of a puffy snatch. Within that same moment, not even three strokes in, that a thigh-drenching gush of juices burst free, as Chloe let out a whorish little moan. She couldn’t help herself, being so far into pregnancy and not even close to stopping yet. The little cub had only a mere head size to her breasts and a similar small paunch to her belly’s size, but she still had to take efforts walking up the stairs. Chloe’s tail swished in anticipation, eagerness overflowing her systems as her hands began to push the fabric of her outfit into her hole, so needy to be filled once again. Her plan had worked, taking her usual babysitter’s phone and confirming with her parents that the babysitter could watch the house this weekend. That little rabbit girl was always so hyper and fun to play with, but she had other plans in mind. Plans that fully required her parent’s rather extravagantly-size mansion, bought from the two’s super hard-working business routine, all for the next generation. They were just so hard and busy, dutiful parents, but their attention span limited their vision, as they probably would’ve noticed their daughter becoming curvier than a porn model so quickly. That, or the outlines of dicks and nipples in her belly, sometimes. Now, for the weekend, she had the place all to herself. Well, herself, and… “Now we can play, Collin…” The door to one of the rooms slid open, and a wave of heat and musk washed over her. She orgasmed on the spot, then once again when she laid eyes on him. Her little brother, Collin, barely over five months old, sat in a large room filled with various plushies, toys, and other things. The bed that lay in the center was perfect for him, as only a king-sized bed could be. For that little naked colt sported a massive 5-and-a-half-foot-long, 2-foot-thick erection that leaked constant, wrist-thick streams of precum out of his flared tip. Angry veins crisscrossed its surface, the medial ring almost as thick as her neck, and his churning sack rested on a small pond of pillows. Almost everywhere on the house-sized room’s floors were a series of tight grates, perfect industrial-strength drains that their parents had installed, just in case. His musky stench permeated the whole house constantly, slightly diluted by the distance but enough to make Chloe or any of her friends hanging over go into a permanent heat so long as they were in the house. After all, his raging erection hasn’t gone down since the day after they came home from the hospital. The same day that little Chloe ended up pregnant. After the family got home, Chloe got a good look at her brother’s entire body. Only 4 years old at the time, she couldn’t explain why she was getting some fidgety around him, or why she couldn’t get enough of his scent, or why her insides felt on fire. In truth, simply smelling Collin’s muskiness in the car put her into heat, more and more the longer she was near him. And, given a small amount of time when her parents cooked dinner a few rooms down, she found herself giving in to her natural instincts and slamming their hips together. By the time she was done, and properly secreted away before her parents barged in to find a fountain of Collin’s colt cum blasting into the air, she was already monstrously pregnant. Chloe’s parents installed new drainage systems all over the house, and Chloe got to experience her overdriven hormones that she always had deep within her. It helped that she had an older sister that was away for a while, and finding things like compression clothes, sex toys, and heaps and heaps of porn from her sister’s bedroom helped to teach her what she was going through. So, the little filly unlatched the compression overalls she wore, something she liked to feel against her bare and naked fur. As the garments fell to the floor, Chloe’s real size was revealed. Her breasts ballooned to nearly half her own body in size, while her belly pushed outwards to almost touching the ground. Little outlines of hard dicks and bulges of hands and feet showed in her, making her grunt, moan, and blush even further. Now that they were alone, for the first time in five months, she could finally be with him again. Chloe leaned forward onto her belly, her thigh-spreading vagina pulsed with need and arousal as a deluge of juices coated her legs even without her touching it. She had to reach back and grab either side of her folds to spread them out, as a pair of leg-thick dildos slipped free from her gaping cunt, and another was blasted out of her urethra by a hard squirt. The horse sighed a gasp of relief, hands feeling her open holes with another shudder of pleasure. She stood once again and approached Collin, almost sauntering as if to give him a show. One hand couldn’t help but cling to her foot-long clit, the buzzer sending echoes of pleasure through her body rapidly. “M-mmmnh… Collin, you put so many in me… But I still want more…!” A sashay of the hips, and a wag of the tail, one of Chloe’s hands brushed against that tight, taut ballsack. Almost instantly, the little colt gave a small wail, a burst of pressurized precum firing out of his length and arcing loudly onto the floor. Chloe pushed her belly against his nuts, as if she was comparing the two spheres. “They’re all yours, they missed their daddy, unnnnffffhh-! But now, hhaaaah, now we can make up for missed time!” Mounting the bed and turning around, Collin got a perfect view of her nearly doorframe-wide hips and ass, a proper milf form before she’s even schoolbound! Both heavenly cheeks surrounded the mini-stud’s tower of kiddie cock, her visible donut smooching against it as she gave him a buttjob. Chloe panted, moaned, groaned and came over and over, working herself up to excite her even further. Legs and hands and cocks pressed around inside her, their offspring eager to join in, too. “Mmmnuuuah…! C-collin, I can’t stop cumming! P-put it in me…!” With surprising deft expertise, Chloe positioned a reverse cowgirl on top of Collin, and her ass slowly sliding back came with his 5, no 6-foot-long dick shoving right into her waiting tunnel.The squirts she produced before were nothing compared to a tubful of femjuice blasting out of her and all over Collin’s nuts. Her sounds were a mixture of pure blissful pleasure and complete satisfaction. Finally! She had finally got the cock of her man inside her once again! Slowly, she slid down his shaft, as it pulsed with another foot of length, another half foot of girth. She couldn’t stop until their hips touch, a feeling of completeness washing over her. Well, initial completeness, for no more than a minute of her admiring how he bulged out her pregnant belly had passed before she started to hump and pound her hips against his own with gusto. The sounds of their lovemaking echoed through the empty mansion, two lovers reunited at last. “M-mooooore! Gimme more babies! Let’s make a family and be mommy and daddy and that way you never have to pull out…!” Little Collin cried out, his 9-foot-long erection gushing proudly into her loins. Chloe could feel it. Those expanding balls, his throbbing length, her brother was getting close. She had to reach down and play with her foot-and-a-half-long clit, making her squeeze him tighter as she worked on him. The feeling of his tool widening was felt along each of her nerves, as a tub-filling shot of hyper virile babyseed was delivered directly to her heat-addled snatch. Her bliss overwhelmed her, and if Chloe could even see her cunt, she’d see how her squirting became constant. So overpacked that she was, the first shot let only a small fraction of cum escape her. The second one power washed her insides, forcing out old cum to replace with the new. Her insides became a cycle of pure virility and fertility, as the slight cries from the little baby colt down below combatted against his own cock’s squelches when every downwards thrust his sister gave off caused more cum to flow out. The drains could only barely keep up! The longer she rode, the more naturally needy his rod became, too. It passed by 9, to ten, to eleven feet long, thickening to 4 feet around, too. Chloe took it like a professional, her pace only increasing as the bed began to wobble, shake, and crack from her forceful slams against her bother. She loved the way he kept stretching her out, more than the toys of his size could ever hope to do. Something felt off though. Not in a bad way, but an ever-so-good way. She could feel her belly expanding gently whenever she didn’t let a blast of cum back out, but her offspring seemed to thrash about. She could only feel as her kids inside got harder, bigger, stronger, more numerous. It was as if new dicks pressed against her outer walls even more now, eager to be released. And that was when Collin gave a sudden, involuntary thrust of his hips, right when the bed gave way under them. “W-wait, Collin! N-no-!” The movement and bounce pushed her up and over his orgasming shaft, body dangling off his curved instrument like a used condom. A mighty elastic *thwap* noise rang out when she fell off the tip of his dick and onto the floor, caused by his freed penis flinging a person-thick rope of wasted babymaking solution quite a few yards against the close wall. Collin continued to cry out as he came against the ceiling, the backsplash coating over Chloe’s bloated body. Between her own gushing and cum-emptying womb, she could barely notice when she suddenly went into labor, and a feeling of something coming down her passageway woke her out of her cummy stupor. “Wh-whats… o-ooohhh, they’re coming out…?! I-it’s too earl-eeeaaaaaahhhhnnn!” Literal bucketfuls of estrus pour out of her gaping hole as she cums over and over again. Chloe’s body twitches in little jolts of pleasure as she feels her walls being pushed aside from the inside out. The tiny baby horse that slides out opens its mouth to the fresh air, bellowing his first cries into the world, even as they’re drowned out by his mother’s screaming moans. She feels every inch of him slide out, more and more, before a full half a minute passes of constant birthing of this new colt. The baby lands right on his father’s balls, almost cuddled up right next to the older boy’s cock. The girl pants heavily, hands gripping her nearly bed-sized belly and floor-dragging, milk-gushing tits. She wants to gaze back and admire her newborn family member, but her eyes go wide when she sees him. Sprawled across her brother’s bloated ballsack was the new colt and his own set of tools, a healthy and perfect newborn despite being born 4 months early. Like her brother, his shaft was as big as she was, and its current state was entirely flaccid. She barely even noticed his larger balls, nor the Roman numeral “I” on his right nut. Still, she had given birth to a proper hyper cub, even if he was only marginally hyper in his soft state. That didn’t last long though, as the scent of the room and natural rutting abilities Chloe was producing made him thrust his small hips between cries. Her scent, the need for her sex, drove him to be a natural breeder, even in infancy. His newborn shaft began to harden, veins popping along its length as it competed with his daddy’s cock. Chloe could only watch in awe as he was only 4/5ths hard, and managing to be even bigger and thicker than her baby brother. As if on cue, though, Collin thrust against his son’s dick, and both of their shafts began to grow once more. Though shocked, Chloe’s body knew what to do, and her hips defied the weight of her gravid belly to push back and against the two rods that were frotting together. She managed to hook her son’s first, and the newborn babe’s shaft locked into his mother’s waiting love tunnel, giving her a low moan. With a few more pushes of the hips, as well as some mutters of “C-c’mon, please, more dick, more babies, more family. Collin, please fill me with your dick, I need it so much, please,” she managed to cram her brother’s cockhead in her as well as it ended its previous orgasm. Chloe’s eyes rolled back and her long tongue hung out in pleasure, inch after foot after yard of babycock spearing through and straight into her overpacked womb as she slid down the beasts. Twin 13-foot-long shafts of meat were mashing against her womb and the occupants within, their 6-foot-thick lengths gaping her nice to ensure that she was sealing her cunt up nicely. Every throb send echoes through her body, every spurt of hypervirile precum she could feel knocking her up all over again. Chloe’s hips could not stop, for when she reached the base of her favorite boys, she placed one foot on either of their nuts and began to ride them. The mansion echoed with moans and cries, splishes and glorps of the lovemaking going on. Her doorframe-breaking hips slammed against their bitchbreakers’ bases with gusto, cocks slick with pre only finding a foot or so of fresh air with every upwards movement before slamming back into her. Chloe loved it. Her cunny gushed constantly, belting over their balls with pressurized juices before excess precum washed it away. One hand held onto the back of her head, the other was tending to her two-foot-long buzzer as if it were a dick. The effort helped her to cum harder, squeeze the boys she adored so much, trying to make them feel even better and cum even harder. She needed it, and she knew they needed it, too. So, when the pressure began to build up in their 14-foot shafts, their thickness bloating thanks to the filled cumveins inside, she could only babble out moans and expletives about their new family together as she felt the coming storm. The boys’ first cumshots hit her like speeding cars, forceful enough that the distended bulges their shots made splattered against the high ceiling before settling back down into her round cumgut. The children’s cries of pleasure echoed far, and if Chloe had been in the right mind at the moment, she’d have thought that her moans could’ve been heard by neighbors. Well, if their wide acres of private property had any neighbors, that is. She moaned, whinnied, screams and begged for more, all to her heart’s content. 15 feet, 16, 17, she was thankful the room had higher ceilings, so that the boy’s dicks could grow even more. Nearing 10 feet thick, the monster shafts bred her like she was dying to get it. Cum gushed out of her used hole between them, as the wider-than-her-body flows from them both was too much for even the young size queen to keep it all in. Even with the powerful drains, it struggled to keep up with the flow of now two fatherly studs. “C-collin…! Y-you and your son Cam are g-gonna… Oh fuck, here comes another…!” Through all the cum and fem flooding they were making, Chloe’s eyes rolled back and she lolled her tongue out of her mouth. Her hips continued, riding their penises without delay. As she did, her contractions hit again, her womb yawning wide as another baby was being pushed out, even when their dicks were firmly entrenched inside. As the yet-unborn equine travelled down her birthing tunnel, the little filly could feel why they were able to do so. Chloe sat down on the shafts and pushed hard, coming up and revealing another baby now balls-deep on their father and brother. A little girl this time, the two new daddies had managed to cram their dicks up inside of her while she was still inside her mother, and it took a great deal of pushing to get her own slightly bloated midsection out of Chloe’s gaping hole. Followed after were a pair of chair-sized tits, with a good view of a large numeral “I” on the right one, once more showing their inbred nature. Nipples the size and width of tin cans bulges and shot milk out, pasting over her mother’s open cunt with a layer of off-white, compared to the cum already gushing like a dam. She cried her first moans as she was bred more thoroughly by her family, her womb expanding slightly as she held onto more and more cum than was gushing out of her. Chloe panted heavily, pussy an open and leaking mess as she rested against her belly. The little ones still inside were restless, and she could feel each one of them. Rutting, humping, breeding. Just the mere contact and joy she had with her baby brother matured them quickly, and she could feel even more as the cum took place in her rapidly-hyper-fertilizing womb. “Mmmnnnff… Cam, be nice to, ooooo… to your sister Callie… Play with her nicely like your daddy,” she moaned out, managing to flip onto her side so that she could barely see them while laying over her body-sized tits and king bed-sized breeding chamber. Both hands delved into her spread tunnel, moaning as every little touch send an orgasm-causing jolt of pleasure right to her brain. She could feel them in her. Her babies, their dicks and tits and holes. Her hands glided over cocks, rubbed at veins thicker than her legs, touched nipples bigger than her head. Chloe’s own breasts, butt, nipples and clit grew, both at the thought and being a newly-made mother all over again. A sudden pressure grew, and her hands were forced out to grab onto her 3-foot-long, 1-foot-thick buzzer to keep up her own high. A deluge of cum rocketed from her hole, dousing the three young ones in a fresh coating that was quickly replaced by another of their own, nigh-unstoppable orgasms into Callie. The babies inside Chloe were cumming into their mother, impregnating her before even being born. The bliss only lasted a few moments though, before a new explosion of pleasure raced through her when the flow stopped and she began to bloat. Something blocked her hole, and as the sudden extra arrival of crying could attest to, the answer was clear. Another boy was being pushed out, but he was clogging her up. It took a few hard pushes, especially with Chloe still laying on her side, to dislodge him from herself. Well, most of him did, but most of his flaccid, 8-foot-thick shaft lay inside her still, and the ground quaked when his sack was pushed out, one orb after the other. Surprisingly though, he did not have the same marking on his right nut like his brother. Instead, the Roman Numeral “II” was present, showing that he was an offspring of one of her original babies, having been birthed inside of her! Collin was already a grandfather, and Cam was either a father or an uncle, likely both. Either way, with the newborn’s penis now growing hard inside her, Chloe could only cum harder knowing it was her new grandson. “Aahhhhnnn! C-Cody! You’re j-just as good at b-breeding me as your grandpa iiiiisssss!” Chloe’s hips moved, cunt contracted, helping to keep Cody’s cock pleased. She couldn’t tell how long he was inside her, but from his 12-foot-thick dick, she could only tell he was racing to be as big as his other family members. Family members who, when Chloe noticed them, were bumping their 20-foot-tall dick bulges against the ceiling, their flows never stopping inside Callie. Collin and Cam were cumming harder and harder as their orgasms persisted. The little filly could only groan as Cody brought her attention back and, with a single thrust of his breeder’s hips, ground his 16-foot-thick dick, with veins as wide as Chloe’s torso, deep into her. As a result, he came on the spot, forcing the two of them apart as the pressure within grew heavily. He popped free of his whorish grandmother’s hole just as a little herm came with, propelled out by her own dick. She came out of the womb, quite literally, and found her fat snatch being pushed onto Cody’s dick by force of her own cumshots. Pressure from Cody’s dick pushed her up, her own meat’s cumshots pushing her back down, making her ride Cody and showing off her own “II” brand on her right hip every time her her-sized breasts bounced. A cum-slinging, 14-foot-long, completely flaccid shaft will do that to someone, after all! Chloe was in utter bliss. Now free, though laying in a foot-thick pool of hot baby jizz as the swimmer poured into her gaping ladyhood like a sinkhole, she could only groggily get to her feet. She could feel something coming, something huge. She laid her head in her cleavage, against her 9-foot-tall belly, and used both hands to spread her visible womb impossibly wide. In an instant, her hole was flooded with cum, femjuices, and babies. One after another, they spilled out onto the cum, soaked ground, until the pressure of her still-growing belly was too much, and they began to come out two at a time, three at a time, then constantly, more constantly, even more and more. She could only cum harder, bringing out a hundred gallons of her femcum every second to add to the mess. Nipples engorged, breasts filled with milk for all the mouths she’d have to feed, clit grew fatter to help in the pleasure. Males, females, herms of all different types spilled out of her, multi-foot-long dick after multi-foot-long dick. The girls were almost entirely pregnant already, she even caught a few glimpses of watching them give birth on their own, and some so far along that they copied Chloe’s act of pushing out baby after baby. It took her nearly a full five minutes of cumming babies, but she ended up with over 150 personally-delivered offspring as her belly deflated. “Ahhhhfffffuuuuuck… so good,” Chloe moaned, stroking her engorged clit. She had to wade through waist-thick sludge of pure-virility baby batter, fem juices, and stray milk, in order to give her brother a soft kiss. “Thanks Collin. Love you so much. Let’s take a break and continue in a sec, okay?” The young filyl kissed her crying brother again, his 20-foot-thick shaft was buried hilt-deep in Callie still after all. Cam had been moved by all the flows of cum, now side-by-side with his father, filling his sister with just as much gusto from his 30-foot-long babycock. Chloe strode through the cacophony of cries and moans, splashes and rumbles of her offspring, and towards the door to the hall-sized room. The door swung open after she turned the handle, a flow of cum going with. She had to stride through the stuff as it began to flow into other drains, finally stemming the tide. For now. Chloe rubbed her sensitive body over, the mere touch on her hips making her gush like a hydrant, let alone her naughty bits. Striding through the house, she made it back to the kitchen to hop up on the countertop for a drink right from the faucet. A few quick gulps and she felt refreshed enough for round 2, though as her belly suddenly began to expand with the feel of unborn kicks and humps, she could only moan once again as she made her way back upstairs. “Bye Grandma! Thanks for picking me up! Mmmf…!” A slightly older voice called back to a car as it made its way back down the driveway of the mansion. A blue-haired equine made her way up towards the mansion’s steps, a long braid swaying in the soft wind. As she closed in on the steps, a swift breeze brought with it an intense male scent, a musky stench unlike any other. The memories it brought back, her nipples hardening in her shift and jacket, a soft wink of near-orgasm stained her panties and short jeans could only make her shudder in response. Upon grabbing the front door and opening it, the heat-inducing weave of hot air and musky smell hit her right away, making her cum nearly on the spot. With wobbly legs, she made her way closer, curious to it all, wondering if it was… A click and the door to Collin’s room opened. A her-sized wave of pure white, sticky goodness flowed over her form and soaked her through to the fur. Hanging onto the door as she pushed aside the massive flow of released cum, she was met with a rare sight. Towering dicks, loud cries of babies, and sitting atop her baby brother Collin’s 50-foot-long, 35-foot-thick cumming shaft, was her little sister Chloe. “C-Caitlyn!? Y-you’re home, mmmnnngh, e-early!” Chloe stared back at her sister, who was only a mere two months older than her, having come back from a vacation early. She looked stunned, and maybe a bit stunning with how cum-coated she was, but the shock from it all didn’t even stop Chloe’s milfy hips from riding her brother, who had been cumming nonstop for the past two days into her bed-like belly. The motherly filly could only watch as her sister stared back in surprise, and slowly began to undress her 5-and-a-quarter-old body.