Meadow panted heavily after almost slamming the door to her parent’s room closed. A mere walk across the hall these days was tiring, but a walk up the stairs required her to catch her breath with almost every step. It wasn’t that her wide and heavy body was because of fat, and it wasn’t from a lack of movement. No, it was thanks to her three-foot-wide belly, doorframe-touching hips, and gourd-sized breasts! The four-year-old Alpaca blew a sigh of relief and pleasure as she felt herself spread wide open from the inside out.
Minutes ago, Meadow had to excuse herself from lunch with her family in the dining room, citing a poor excuse like she was bored or done eating. Whatever she said, it didn’t matter to her, so long as she didn’t reveal her secret. That, or why she had been eating a good five times her weight for the past three weeks. What really mattered was getting to a more private place, as her water had just broke and gushed a near tubful all over the dining room floor. It took all her strength to hold back her moans as each step made her pause for orgasm, hands darting from rubbing her belly, to squeezing her pressurized milk tanks into blasting white fluids everywhere, to even making she her hole was loose with a good fisting. The mess she made slowly sunk and was absorbed into the carpets or dried on the walls, over dozens of existing layers of her fluids. Thankfully, almost like sheer luck, her parents didn’t see any of the events their daughter was going through. Field and Forrest, her mom and dad respectively, were just barely out of sight whenever these things occurred. It especially helped when her instincts had her thrusting her stuffed cunt over her newborn brother’s babymaker, a good five feet long and two feet thick, every time she could. If her parents were sleeping, or taking a shower, or even when they had company over and were distracted, she was filling her womb with the most virile of batter.
So, she made it up to her parents’ room a half hour after she first felt a newborn sliding through her tunnel. If she hadn’t lost count after the first few, she would’ve totaled her orgasms in the hundreds. Now, though, was the perfect time for them. Meadow knew her parents had soundproofed their room fairly heavily, so she made it only a step or two inside before moaning louder than she ever had before. Air escaped her lungs as a gush of fluids, nearly on par with a busted fire hydrant, shot from her swollen gash against the wall. Her orgasm continued for a whole extra minute before her damp folds began to part. Wide and wider she was spread, harder and harder she came, as the crying noise of a baby Alpaca was added to her moans and a waterfall of juices. Knowing her parents’ room, and how many times she had already cum inside here in the days prior, the soft carpet and a pile of cushions softened the cub’s landing, and gave him a soft perch when his arms, thick butt, and legs eventually pushed out. Despite the baby being out of her, Meadow still felt full, both of life, and of the baby she had just birthed.
The newborn boy’s body had been pulled out, but a thick pillar of flesh still remained inside her. And impossibly large cock, easily four feet thick and an unknown length, punched right back into her womb. Meadow moaned softly this time, being stretched out so nicely. The cub Alpaca, even being so young, felt such love and adoration for her firstborn. Being a mother, and a horny one at that, she knew the first thing about parenthood by instinct alone; take good care of your kids! Involuntarily, as if by nature, her doorframe-pummeling hips began to bounce on her newborn’s cock, hilting multiple feet with every attempt. Already, her belly expanded once more, with warm cum invading her body and sending pleasing electric pings up her nerves. The new MILF came and came and came, her orgasms serving only to please her child further. For his part, the little boy only cooed and thrust his hips upwards; despite being new to this world, he already knew his place in it. To breed his mother and make even bigger hordes of cubs as he grew up, just like his father would do. If anything, he’d probably want to meet his father, so they could both breed his mother together.
Five feet thick, seven feet thick, ten feet thick, his body continued to push out more cock as he got fully hard, and his mother’s belly stretched from the side of his shaft. Meadow moaned more and more, riding him harder than ever. He was better than any toy. Any stimulation. His father? Probably not, but she’d have to compare them both. Her thought process was interrupted by an insane, nearly blackout-inducing pleasure as she was stretched even further so suddenly. One nut, and then the other, plopped out of her used cunny, slamming into the ground with enough force to raise the bed up into the air both times. The added stimulation was too much for the baby, though. With a cry, he came, and hard. Meadow felt herself being lifted off him by the force, as her belly along covered a good quarter of the huge room. Within a few seconds, she was slid down 11, 16, 23 feet of hardened babycock, only getting caught on the helmeted head for a second before being popped off like a bottle rocket. His orgasm had only just begun, and a stream of pressurized, hyper virile seed shot forth like a dam’s output. The flow alone was easily 5 feet thick, bigger than Meadow’s body. Batter roared from her closing and leaky hole, Meadow felt so loose and filled at the same time. Another feeling came from her though, as her holes were stretched from the inside. 
Plastic of various colors began to spread her holes, from her nipples, ass, pussy, and even urethra. Dildos easily used for hypers peeked out before her own fluids pushed them out, too. Dildos nearly her own body in size, floppy double-ended toys that could’ve easily spanned the length of the room, anal beads bigger than her tits, and all manners of plugs, vibrators, and even phallic-shaped objects, it all began to flow out along with an increased output. Meadow had used them to plug herself up more, in order to contain most of her fluids. Her tub-filling squirts were just a faint drop in the lake compared to how much she was storing inside her. As she continued to breed with her brother from every hole, she needed bigger and thicker things to help contain herself, which ended up pushing more toys deep inside her as they were added. The Alpaca sighed in pleased relief after nearly another half an hour, her orgasms slowly winding down to a bucketful every second and a toy or five ever half second, before she felt an intruder.
Struggling to crane herself to look back, she saw her firstborn’s cockhead, still on its first shot of his orgasm. His pleasure had grown him, now with a cock that easily surpassed 33- make that 35 feet. 37. He throbbed madly as the 18-foot-thick cock nudged against Meadow’s gaping donut, and another foot of growth began to slide him into her ass. She groaned from the sudden pressure, of course, but nothing like adding another 3 feet to pop his cockhead into her, and a throb to make sure gravity was pulling her back down onto him. His hardness lifted her up into the air to slide further, ten feet a second. Cum and her-sized toys leaked out of her mouth between moans and begs for more, even as she felt another surge of pressure from her cunt. Tiny hands reached down to pull on her inner walls, spreading herself as another child ran its course. This time, as the baby dropped out of her hole, she felt the quadruple plopping of four balls slam onto the ground from her lowering body, as the cries of a herm in orgasm sounded out. The mere sensation of her balls being merely grazed by the floor sent the newest born into orgasm, a dual set of cocks still rammed into her mother. Twin beasts, quickly rivaling the herm’s brother’s in size, began to power wash Meadow’s abused womb with more seed. She could already feel it, new babies forming inside her from the love of her offspring alone.
The tide rose heartily from the leaking seed. Meadow felt her body becoming more MILF-y as a result. Her breasts ballooned with milk for her young, nipples and areolae bigger than her actual body cannoning milk into the pool, hips that blossomed outwards along with her butt, and a pussy that would’ve rested fully on the floor with her thickening thighs, if she could even stand. There was movement in the cum flood, sperm cells that were growing bigger as the babies passed the 50-foot-long mark. Hyper sperm surged from her holes and mouth. Meadow never quite questioned why her parent’s room was so big, wide, and had fairly powerful drains that were being overflowed with all this output.