Rock Hard

by ReadingRainbow

Rating: mature
Tags: Random, Maud Pie, Alternate Universe, Anthro, My Little Pony: Friendship is Magic, Pie Sisters, Other, Romance, Pinkie Pie, Sex
Length: 2431

Maud Pie can't escape the heat, and in an attempt to deal with it, discovers something she never knew possible.

Maud Pie is a...stoic horse, for lack of a better term. She seems emotionless, but in reality, she is just very good at remaining calm. All the same, this year the heat all mares go through is extremely strong. Maud however, is more than just a mare, and this year, Pinkie is determined to help her deal with it.

Literally shameless clop.

Fetish Warnings: Hyper, Cum Inflation, Futa, Expansion/growth (Breasts/Penis/etc), Pheremone Influence, Heat, Incest, Self-fuck
Now has a youtube reading by ScarlettBlade! Check that out here: https://youtu.be/ZkSJWtSM1m4 :heart:

Cover art by KevinSano: 598081
Inspired by a picture by Boltswift: 649868

Proofread by Turok <3

Published 2017-08-20 10:50:05 UTC
Last updated 2017-08-20 10:50:05 UTC

Getting Your Rocks Off

Heat Season had never been a problem for Maud. It was safe to say that she was as 'un-horny' as she was seemingly unfeeling. While she might have enjoyed a good fuck, Maud was not one to take the initiative to go find a good time. A hermaphrodite from birth, Maud had always been comfortable with her dual parts. Her large bust had always been the envy of her sisters, Limestone and Marble both wishing they had also obtained such large assets, whereas Pinkie had always loved nuzzling into Maud's sizable bosom. As for her lower equipment, her well lubricated slit was complimented by her bulging nutsack brimming with powerful seed, and a good 20 inch horsecock to match, perfect for pumping loads into a waiting mare.

Maud was endowed. That much was not in question, but being the only one out of her sisters with a males equipment often left her with the issue of her family's policy on nudity. Or lack of policy rather, on account of her sisters and herself not minding being naked in the same room. Often, trips to the private beach not far from their home would result in them relaxing peacefully on their towels, as naked as peeled orange. The images that roved through Maud's mind were more often than not filled with her sisters supple backsides, her dreams plagued by imaginings of her sisters getting her off over and over, filling them to the brim with her abundance. More often than not, she would wake to a enormous wet tent in her sheets, usually causing her to walk around with a half-chub in her pants leg for the rest of the day.

Unfortunately for Maud, this particular year would be difficult. Not being susceptible to being horny had given her a serious case of the blue-balls, and her veiny nuts throbbed with need. If there was one thing that Maud could feel for once, it was how badly she would need release before her nuts possibly burst. Years of buildup were contained withing those weighty orbs, the only object denser than they were was a black hole.

Maud would have to brace herself. Heat Season was coming.
-~-~-~-

Pinkie Pie hummed happily to herself as she finished putting a bun in Twilights oven. Sweat dripped from her brow, as she turned away from said oven to face her purple friend.

"Thanks again for helping me with the baking Pinkie," Twilight smiled. "There is nothing quite like having a friend to help you when you need it!"

"Sure thing Twilight! Sooo happy to do what I love with my friends! Speaking of which..." Pinkie mused thoughtfully. "I have a friend that needs help, but even with Heat Season she won't take it upon herself to do it! Do you have anything that could help?"

Twilight giggled, her eyes lighting up. "Of course! Be it magic or potions, you can count on me!"

Pinkie almost poofed larger than the fluffball she already was, excitement blowing out her ears like steam. She brought Twilight closer to her, and began to whisper the ingredients for her idea into her friends waiting ear...
-~-~-~-

Maud rolled and groaned in her sleep, having taken it upon herself to sleep in the silo during the Heat Season, so as not to be further affected than she already was by her own heat. Unbeknownst to her, Pinkie had poured her special magical potion from Twilight in Maud's soup earlier that night, and had stood outside the silo for the better part of an hour fanning her scent through a crack in the wall, fully intent on driving her sister into rut.

As her balls ever so slightly swelled with production, Maud's dreams were once again plagued by lewdness, more intense than any of her other dreams before it. Her dreams had reached a crescendo, white oceans flooding her mind, as her shaft nearly tore through her panties, achingly erect as precum bubbled heavily from its tip. Pinkie saw this as her opportunity, and sneaking in, carefully straddled her slumbering sister. Twilights potion had not fully taken effect, and to be activated, Pinkie had requested the lewdest fun she could think of as the key. As Maud's meaty rod throbbed hard above her chest, Pinkie slowly but carefully reached down and brought the tip to her slick entrance.
"Ooohhh that's warm," Pinkie moaned softly as globs of pre squished against her folds, her cheeks pinker than the rest of her. "Here goes nothing~!"

Pinkie lowered herself onto her sisters meatstick, shivering with delight as the flared tip popped past her dripping lips, and she felt the shaft inside her swell a bit as it insistently throbbed. She was almost to the medial ring, and all she had to do was bottom out, and get Maud to orgasm once. That would be enough to accelerate Maud's heat to the point of no return, and force Maud to deal with her problem. Pinkie gasped as her slit brushed the medial ring, 13 inches of horsecock deep within her needy cunt. Gritting her teeth, Pinkie began to drop, passing the medial ring with a bump, and quickly hilting herself on her sisters pole. Pinkie's mind was clouded with lust, but her goal was still clear in mind, as she reached backwards to trace a finger up Maud's slit, circling the clit before firmly grasping those gigantic orbs.

Maud bucked straight upwards, as the flare pressed deep and hard against Pinkie's cervix reached full size, the urethra granting Maud's sizable load a straight passage into Pinkie's womb. Pinkie stifled a gasp, as blast after blast of thick futa cream filled her faster than she thought possible. Maud's urethra bulged against its restraints, the figurative dam within quickly being broken. As the first orgasm came to an end, Pinkie panted heavily above her sister, her belly bulging with the sheer amount of seed it contained.

Thankfully, Twilights potion had assured that Pinkie wouldn't get pregnant, and Pinkie had successfully dealt with her heat. Now, it was Maud's turn. Pinkie carefully raised herself off of her sister, clenching as she did so as not to spill any of the prodigious load sloshing inside her. The flare tugged at her entrance, precum finally lubricating it enough to allow Pinkie to remove herself from its grasp. Picking up her lingerie, Pinkie kissed her sister on the forehead, and snuck out the door, grinning from ear to ear. Soon the potion would reach full power, the key to unlocking its effects activated by Pinkie's incestual love session.
Soon...
-~-~-~-

Maud woke up barely 5 minutes after Pinkie had gotten back to the farmhouse. The first thing she noticed was the need coursing through her body, causing her to arch her back and gasp loudly, as a small spurt of cum graced her chest. Maud reached to grasp her pulsating shaft, but before her hands could reach it another spurt coated her face generously in milky white. She moaned loudly as another spurt flew into the air, landing on her generous tits, and then another, and another. Maud's heat was powering ahead at full steam, and her unknown session with pinkie had driven her into rut. She sat up as her scrotum swelled larger with seed, and she groaned as her cock spurted cum every second all over her features. The potion was already at work, sending her rut into a sort of frenzy mode, and Maud figured there was only one way to deal with it.

Getting down on all fours, Maud carefully bent her cock down and underneath her, angling its tip towards her own aching marehood as her nuts continued their throbbing growth. Spurt after spurt of cum made it difficult to focus as each burst splashed against her dripping wet slit. Steeling her mind, Maud pushed her tip forward, grunting with effort as she managed to get the tip past, the flare popping in with a lewd squelch, as her copious load increased in size. She blushed heavily, and began to push her cock back and forth within her own pussy, her bulging nutsack slowly growing to one side as it continued producing faster than it could be emptied.

Maud groaned as her cock bulged larger, the flare deep within her depths, as her meaty shaft got even meatier. Her loads had filled her passageway now, being pushed into her womb as she pumped her cock into her folds, cum filling the space as it pulled back, and then being pushed through her cervix as she pushed her cock in. Maud was shuddering with pleasure, her heat only increasing her rut, and vice versa as her nuts simply kept increasing their production.

Throb after throb, pump after pump, Maud kept fucking herself with her shaft, her loads no longer spurting but instead flowing steadily through her cock, no long distinguishable from eachother aside from the throbbing of her urethra against her clitoris. Maud was steadily approaching her climax, and already her womb had filled to the brim. As Maud squealed in delight for the first time in her life, she just kept up her masturbation, her cock swelling larger as her balls did the same. Maud soon found she didn't even have to do anything, as her orgasm kept building all on its own. She panted and moaned, breathing heavily with her head down as her belly began to push outwards, getting heavier and heavier with the futa goodness her steadily growing orbs were producing. Just when she thought it couldn't be better, the potion kicked in.

Maud came with the force of a well oiled steam train, her cock bulging to twice its original size with one throb, her nuts literally resting on the floor as her stomach visibly bulged outward with her first load. She screamed with passion as her balls ached with an eternal need, still growing larger by the second, each one easily larger than her head now. Her belly pressed against the floor as her production factories went into an endless overtime, her breasts somehow swelling larger as well, milk forming on her sensitive nipples which also seemed larger than before. Maud was easily in heaven now, her clit constantly stimulated by her pulsating cumtube, each shot of pure white baby batter pushing her stomach larger and larger.

The potion Pinkie had snuck into Maud's food had one unforeseen side-effect. Instead of stopping after Maud had satisfied her need, Twilight had misread the instructions, and now it created a feedback loop. Maud's cum was infertile to herself, so the heat drove her rut higher, the potion designed to make her cum enough to satisfy her, which only made the heat worse with the pleasure it gave her. The more she came, the less her heat was quelled.

Maud came harder and more than any other futa in the record books. Her feet and hands began to leave the floor as her insistent nuts continued pumping her full, her nuts and breasts swelling larger and larger with each passing moment. Load after load passed down that shuddering cock, Maud stuck in a gasping but silent scream of immense pleasure as gallons and gallons of cum were shot straight past her cervix. Her belly was easily larger then her bed now, with her nuts and breasts each 3 times the size of her head. Milk was spraying from her nipples, each nub at least 3 inches long, and 2 inches across. Her cock was firmly locked within her depths, and as her hips widened to accommodate it, it also grew larger so it could pump more of the load it could already barely handle.

Maud trembled as tears streamed down her face, the pleasure too much for her to handle. She could feel herself reaching another peak, and as her tongue lolled out of her mouth, she found herself bringing a nipple to her mouth to suckle on it. Her nuts had swollen rounder and heavier with each throb, and now were pushing against her belly, having the side effect of pushing against her still growing horsemeat, pushing it deeper and deeper into her quivering pussy.

Her flare pushed against her cervix, knocking on its door like a demon possessed, until finally, with a few more throbs of growth and spurts of lubricating cum, the flare broke past the final lock. As her flare swelled outwards quickly, it locked itself into place behind her cervix, guaranteeing its placement. Her balls simply responded by producing more, her belly easily beginning to fill the room with its hundreds of gallons. As furniture pushed against the walls, Maud began to grope her breasts with need, a few more throbs all she needed for that final push over the edge.

Maud finally screamed out loud again, as her orgasm reached heights she never though possible, and she truly came. The 5 gallons per second quickly turned into 20, then 80, then 320, as her belly swelled her upwards. Her nuts each had to be a meter across, and her breasts sprayed milk like irrigation sprinklers. The walls creaked and moaned as her production only sent her into a stronger orgasm, her production skyrocketing past known barriers, her cock bulging to 2 feet wide on its own, her urethra throbbing against her engorged clit.

A flood of cum was rushing into Maud's womb, her ovaries swelling fuller and fuller as they were literally overwhelmed with seed, quickly approaching the size of watermelons in their own rights, and surpassing beach balls by the next throb as her shaft pushed an ocean in its own right into her gushing pussy. With a groan, the walls of the silo finally collapsed as with a final pump, her orgasm finally stopped.

Maud had to be the size of a small whale now, her breasts each 2 meters across, and her nuts each twice that size. Her cock still throbbed, but thankfully, its 4 foot wide size was no longer facilitating an onslaught of thick futa batter. Her hips had widened nicely to accommodate, and her ass gently moved against the pulsations of her cock. With a tired sigh, Maud lay her head on her breasts, fully intent on sleeping the rest of the night. Her intentions were for naught however, as a rumbling sound began to emanate from her swollen orbs...

...it was going to be a long night.

The End <3

Author's Note

I literally wrote this in one night. Hope you enjoy, please leave feedback~<3