A Great Many Pies

Limestone blinked and watched as Maud did not immediately begin to ride her like a two dollar hooker. Instead, the other mare leaned over, and opened the drawer of their nightstand, retrieving a scroll from inside. Which she placed against her belly before channeling a bit of magic through her hoof and causing the piece of paper to briefly glow a faint grey light.

Maud then discarded the now used magical item off the side of the bed and turned back to her lover. “Now then, where were we?”

“What was that all about?” Limestone inquired, gesturing with her nose towards the fallen scrap of paper. “You didn't say anything about magic.”

“I had to be sure, and this helps with that,” Maud stated evenly, roughly grabbing the other mare’s semi hard cock and guiding it towards her dripping entrance.

“How so? You’re not doing anything crazy are you?” Limestone pressed.

Maud paused, and shot her lover a frown. “I would never do something crazy. This merely ensures that I don't lose any of you. That is it.”

“Lose any of…” Limestone muttered, a grin spread across her face. “Oooh that's kinda hot to be honest.”

“I thought you would say that,” Maud exclaimed, leaving the head of the other mare’s cock resting against her pussy before placing her forehooves on either side of Limestone’s head. “Now then. Are you ready to knock me up?”

“I’ve never been more ready for anything in my entire life,” Limestone stated eagerly. “Go ahead babe.”

Maud’s lip trembled ever so slightly, the ghost of a smile briefly crossing her face. “As you wish,” she remarked simply before dropping her hips.

A second later and the throbbing tip of Limestone’s horse cock pierced deep into the other mare’s body. Aided by an incredibly generous amount of natural lubricant, it took mere heart beats before the futa mare was as deep as she was going to get. The second their hips connected, Muad let out a low, shuddering moan, her hooves resting on her lover’s shoulders as their eyes met.

“Stars and stones it's good to be back inside of you again,” Limestone exclaimed, a smile growing on her lips. “Though something tells me I wont be pulling out for quite some time.”

“Not until I know for certain that you’ve knocked me up,” Maud replied plainly. “Do you think you can handle that?”

“Well I did finish a few times today already and- yowch,” Limestone winced as her lover’s pussy clamped down around her cock like a vice. “Sorry, sorry. Was just teasing you a little. Of course I can handle it”

“Maybe I don't want to have sex anymore,” Maud offered.

“You and I both know that's a lie,” Limestone claimed, leaning forward as much as the ropes would allow. “I can almost feel how badly you want me to fill your womb with cum.”

“I do want it quite a bit. Though Pinkie Pie could accomplish the same result,” Maud murmured.

“You and I both know that's not going to happen,” Limestone remarked, grinning even wider. “Come on then, let's do this already.”

“You will be more cognizant of my needs from here on out, right?” Maud half asked, half stated.

Limestone nodded. “I promise.”

“Good,” Maud stated before leaning forward and planting a short, chaste kiss on the other mare’s lips. “Now, prepare yourself.”

Limestone didn't have any time to consider the threatening undertones in her lover’s words, because that same pony was already in motion. Her body rose quickly and fell just as suddenly, her hips slamming back down against Limestone’s crotch with a distinct clap which filled the small room. The sound sent a shiver up the futa mare’s back, a small part of her still worrying about waking up her other sisters or stars forbid, their parents.

Even knowing that wasn't a concern anymore wasn't enough to set Limestone’s mind completely at ease. Though, if she was being honest with herself, the chance of being caught had always excited her more than anything. The thrill of doing it in secret might be firmly in the past now, but the remanants of those many nights spent sneakily fucking in the dark had certainly left behind a lasting impression on both ponies.

Such that even now with there being absolutely no reason to stay quiet, Limestone could feel her sister unconsciously slowing her hips. As if trying to subtly contain the sounds of their love making, only to quickly remember that was no longer necessary. Then their bodies met with a more climactic slap of flesh on flesh, their moans slowly rising in volume as they began to relax.

In minutes the slow, ponderous pace that Maud had established at first was gone, replaced by one that bordered on frantic. The icey mare’s expression morphing from one of barely contained desire to that of outright lust. Though in Maud’s case that meant that her moans were only about twenty percent louder, and a faint smile was constantly present on her features.

Limestone however, was a little more open about how much she was enjoying the situation she found herself in. Sure a small part of her wasn't wholly convinced about the whole rope and bondage deal, but it was steadily growing on her. She didn't want to think of that right now, for all that mattered to her was the soft, velvety confines of her sister’s pussy which were wrapped tight around her thick futa cock.

“Fuck thats good,” Limestone muttered, the mare bucking her hips as much as she could.

Though she couldn't go far, Limestone always thrusted up into Maud’s dripping honey pot whenever the other female came back down. It took a bit of practice, but in the end Limestone figured out how to get a good hard thrust in fairly consistently. Though even still, she couldn't quite shake the strange pleasure, and slight irritation that came with being bound tight against the bed.

Maud seemed to relish this change however, with the mare becoming louder than usual, as well as a little more touchy the other times they made love. The laconic mare trailed her hoof down Limestone’s chest and caressed the other pony’s surprisingly soft features. Gazing into those slightly dull teal eyes, Limestone could see a barely contained desire, and a joy that Limestone had never seen before.

The slightly withdrawn, and usually reserved pony wanted, no, needed this. Limestone was almost a little taken aback by that small realization as such emotion was rare to see in the other pony. Yet, the longer she gazed within the blue orbs of her lover, the more Limestone couldn't help but feel empowered in a way.

Maud wanted her foals, to bear her children, and to make Limestone into a parent. It was an overwhelming feeling, but one that also made Limestone’s chest swell with pride. Immediately she put a little more strength into her thrusts, in addition to leaning forward and nipping at her lover’s neck whenever she had the chance. The effort paid off quickly, with Maud leaning forward and rewarding Limestone with a soft kiss on the lips.

Though it didn't last long, the embrace was a passionate one, and signified to both parties that they were ready to end round one. As usual, few words were spared by either pony, with both merely grunting, and moaning to let the other know how good they felt. A system which worked just fine as they knew one another so deeply that they didn't need to give one another anything more than a simple look to convey their deepest thoughts.

Maud adjusted her hips, settled her hooves on Limestone’s shoulders, and gave her butt a little wiggle before jumping right back into it. This time when she began to bounce it was clear she wasn't going to stop until she got what she wanted. Which was a womb full of cum.

Limestone could only hold on while she received the ride of her life, her excitable lover bouncing harder and faster with each passing second. Unlike nearly every other time they had fucked, there had been no slow insertion, nor gradual adaptation to Limestone’s girth. Which was fine as Maud’s love canal had been plumbed so frequently by her sister’s cock that it stretched quickly.

All of these factors and more built on top of one another, adding more pleasure to the already orgasmic experience. It couldn't last forever though, and only a few minutes after they began to fuck in earnest, Limestone could feel her orgasm begin to edge ever closer. She knew it wouldn't be long for her lover to hit the same high she was nearing either, as the girl’s pussy was starting to spasm every once and awhile.

The tight confines of Maud’s pussy squeezed down on her every few seconds, her intense desire to be filled nearly overwhelming the already frazzled mare. A brief feeling of tightness turned out to be the last straw, and all at once Limestone felt her orgasm arrive with all the force of a runaway freight train.

“I’m cumming!” Limestone shouted unexpectedly, her entire body suddenly becoming as stiff as a board.

Maud shuddered, the other mare clearly seconds away from experiencing the same bliss. “Give it to me,” she commanded.

Limestone did just that, unleashing an absolute torrent of incestious futa seed deep into her sister’s womb. The flared head of her cock held open the other mare’s cervix, forcing every last drop of cum into the pony and ensuring it could not escape. The second she felt the explosion of hot seed hit the deepest reaches of her body, Maud came as well.

The quiet mare’s hooves trembled, and she bit down on her lip as she gripped the other female tightly. Together they rode out their respective orgasms in relative silence, both reveling in the pleasure rocketing through their bodies. Over and over they both felt like the end was in sight, only for another twitch, or another spurt to keep things going just a little bit longer.

Even then, it couldn't last all night, and with a sigh, Limestone collapsed to the bed, her limbs falling slack in her bindings. Muad relaxed a moment later, the mare resting her head on Limestone’s shoulder and breathing deeply. Together they both remained there for several long moments, collecting their wits while filling their bodies with oxygen.

“That was… great,” Limestone murmured.

“You were exceptional,” Maud claimed, her voice lifting slightly.

Limestone grinned like she had just been given the greatest compliment of her life, which she may very well have. “So, did the spell work?”

Muad leaned backed, and ran a hoof down her chest to her belly. Where a small but noticeable bulge could be seen in her midsection.

“It seems like it,” Maud remarked.

“You still want to test it more don't you?” Limestone pressed.

“I do,” Maud admitted.

“We might as well do that then. It's not like I can go anywhere,” Limestone exclaimed, giving her restraints a jiggle for emphasis.

“I could loosen them for you,” Maud offered.

Limestone shrugged. “Nah. It seemed like you were enjoying yourself and I don't want to ruin that.”

“Because you definitely werent also having fun,” Maud pointed out with a small smirk.

The other mare blushed, and chuckled. “I don't know what you’re talking about.”

“So, round two then?” Muad asked.

Limestone nodded. “You know it.”

“Holy crap. I think you drained me dry,” Limestone muttered, hanging slack in her now loose restraints. “Seriously, I don't think I have anything left but dust.”

Sweat dripped down the matted fur of Limestone’s body, pooling on the sheetless bed they both lay in. Even Maud seemed to be winded, with the sweat stained mare breathing heavily as she sat on her sister’s crotch. Though the other mare’s cock was still buried deep in Maud’s pussy, neither pony seemed to be ready for another ride.

Maud hummed, and gently pressed her hoof against the now quite prominent bump in her midsection, causing it to jiggle the cum inside of her sloshing around within her overstuffed womb.

“You certainly have given me quite a bit,” Maud exclaimed.

“Do ya think that's enough to knock you up?” Limestone asked with a smirk.

“That's enough to knock up a small town,” Maud deadpanned, a small grin briefly crossing her face. “I love it.”

“I bet you can't wait until you start showing,” Limestone teased.

“It is going to be quite… interesting,” Maud murmured, her hoof caressing her belly in an almost loving manner.

“So, I don't know about you but I’m starving and need a shower something fierce,” Limestone offered.

“I had best get you out of there before you get rope burn,” Maud replied, untying one of the other mare’s hooves.

“I think it's a bit too late for that,” Limestone replied, rubbing her wrists once they were free.

“I am sorry my dear,” Maud murmured.

Limestone smiled, and gently caught the other mare before she could turn away, forcing their eyes to meet. “Hey now. It's fine. I’m a tough mare.”

“I should have stopped after round ten,” Maud stated.

“And stop me from filling you up to this point?” Limestone stated, poking the other pony’s cum belly. “No way.”

Maud smiled faintly, and planted a kiss on her sister’s lips. “Thank you dear.”

“Hey no problem,” Limestone murmured, blushing furiously.

“So does that mean I get to keep the rope around for next time?” Maud asked.

Limestone chuckled awkwardly. “I mean, it would be a waste to just throw out good rope right?”