Marble's sleeping sisterby Hidden SecretChaptersPart 1Part 2Part 3Part 4Part 5Part 1Today had been another boring day for Marble Pie, rock farming wasn’t an exciting job, but it was still one that her family had to do. Every day before she went to bed she would take a shower to clean off any dirt or grime from day before having some “personal time” for herself. Lately it seemed like she was having to “relive” herself more often and, having a 15 inch long futa cock, that meant that unless she wanted to make a mess elsewhere in the house she had to do it in the shower. It always seemed like a weird joke to her that she's, the shyest member of her family, would be the one to be born a futa and not her more forward sister Limestone or the outgoing Pinkie. Though that didn’t change the fact that right now her cock was slowly starting to harden. Since marble had more than one reason for taking a shower she would wait until the rest of the household was cozying in for the night. She didn’t want anypony to accidentally hear her as she pumped her cock, or hear her moans as she came painting the shower wall in her thick cum. Thankfully the entire Pie family was known for being very heavy sleepers, in fact her sister Maud sleep through one Hearth's Warming morning while Pinkie jumped on her bed, setting off party poppers. Maud was the heaviest sleeper in the family, and always went to bed, and woke up at the same time every day. Marble was glad that Maud’s room was the only one beside the bathroom, that let her know when it was or wasn't safe to take a shower. These things weren’t in her mind right then, instead her main focus was on her 15 inches of throbbing horse cock. Marble started her routine like she did every night, first she grabbed the head of her shaft and started to rub her palm in gentle circles around the flare, while her other hand lathered up and pumped her veiny shaft. She slid her hand up and down its length, closing her eyes and enjoying the sensation, before moving downwards to gently clean and fondle her apple sized testicles, that were more than productive enough to impregnate a mare several times over. Cupping her breast while fondling her balls, her cock started to leak pre, clear rivulets running down her shaft mingling with the water of the shower. After her balls were nice and clean, she went back to stroking her shaft. She gripped her prodigious cock and pumping her hand from base to tip. She started to pant and moan a bit while pleasuring herself wondering what it might be like to have somepony else jerk her off or, even better, somepony with a juicy hole to fill. These were just fantasies of course, she would never have the confidence to ask a mare to jerk off her cock and let her cum in their mouth, or to split them open with her impressive shaft and inject her cum deep inside them. These fantasies were the closest she would probably ever get but the thought always excited her and caused her erection to get that much harder. Moving both hands to her shaft she began furiously jerking her hands up and down, feeling every vein running up and down its length. Her knees started to weaken as the pleasure increased, her tongue lolled out of her mouth as she panted harder and harder from jerking her rod. She could feel her balls start to churn with thick potent cum. She jerked her shaft faster and faster, her hands almost a blur as her climax approached. Then she felt It happen, it was like a faucet turned on in her balls. Her cock erupted shooting ropes of cum against the shower wall, the thick goo slowly rolling down. Marble panted holding her still dripping cock for a while, trying to catch her breath. After she calmed down she finished her shower, cleaning any cum left on her cock, or body. After she finished, and cleaned up the mess she made, Marble started walking to her room, but on the way there she saw Maud’s bedroom door was open a bit. Marble thought she probably hadn’t closed it all the way when she went to bed. She, being a good sister, went to go close the door but when she looked inside she saw Maud on her bed. She was lying completely nude, her covers tucked in beneath her. The moonlight from the window was hitting her body, showing off every detail. Marble hadn’t seen Maud naked in years, she had no idea that Maud had developed so much, and in so many areas. Marble guessed she never noticed it because of what Maud wore everyday. Maud’s entire wardrobe consisted of baggy, loose clothing that hid almost all of her features, Marble had no idea of the curvy mare hidden beneath it. Mauds legs were smooth and led up to a set of full hips and plump ass, toned from a life of labor on the farm, yet still soft and full looking. Her breasts, while being rather large, seemed perky and firm. All in all a truly an undeniably beautiful mare, and Marbles body knew it. While she was looking over her sister, her cock started to twitch, and harden. Marble quickly and quietly ran down the hallway, into her own room, before she was caught peeping. Softly shutting her door Marble pressed her back against it and hyperventilated, not only had she seen her sister naked but it had even made her cock start to harden. Shaking her head in an attempt to clear the thoughts from her it she decided to just go to sleep, and pretend like nothing had happened. She couldn’t be attracted to her own sister, and she wouldn’t let the thought of Maud’s nude body keep appearing in her mind. Author's Note Hey this is the first story I've made, if you see any problems please post a comment below. Part 2It had been a rougher day than normal for Marble, every time she looked at Maud her cock did a little jump. During her nightly shower she blew her load while thinking of her, life was getting turned upside down since she saw her naked. Marble was going to her room, but instead she stopped in from of Maud’s again. She couldn’t force herself to go on, she knew behind that door Maud was lying on her bed asleep, and nude. She reached out and opened the door Maud was lying on her bed with nothing covering herself, she was completely exposed. Marble wanted, no needed a closer look she couldn’t just stand in the doorway, she wanted to be able to see everything, so she went and stood next to her sister's’ bed. As she looked lustfully at her sister her heartbeat increased. What if Maud woke up? what if someone saw her looking over her nude sister? As she was thinking this her heart was beating in her ears like drums, but that wasn’t the only thing beating. Her cock was completely engorged and throbbing, it ached to breed this delicious looking mare. After staring for a while, and trying to breathe as quietly as possible Marble started to move. What if she touched her sister just a little bit? She could just say she was warning her that her door had been left open again, not even thinking what Maud would do, or say when she saw her throbbing horsecock. She reached her hand down and pressed it against her shoulder, her skin was soft as anything and sent a tingling sensation up Marbles arm. She then started to move her hand down from the shoulder, onto her sister's chest. She grabbed one of her sister's tits in her hand, and started to rub it. After a bit she reached out with the other hand and grabbed the other free tit. She was grabbing, and rubbing her sister's tits while she slept, with a rock hard erection throbbing between her legs. While she rubbed her sister's tits, Marble started to jerk her hips a bit, her body knew there was a female ready to breed in front of her. She was too enamored with the feeling of her sister's tits to pay any attention to her own hip thrusts, or the pre on her cock. Her sister's tits felt amazing to grope. She started to rub her fingertips on the nipples, they were hard from the night air. Maud had thick full nipples, the kind that just begged to be sucked or pulled on. Marble rubbed the dense tips around with her fingers and gave little pinches and pulls, her own nipples felt nowhere near as good to play with. It was like everything she did to them prompted another jolt through her hand, she stayed like that for a while, entranced as she rubbed and pinched her sisters nipples. Out of the corner of her eye Marble saw a slight glisten of light. When she looked down between her sister's legs, her slit was wet. If her cock was as hard as rock before it was hard as steel now. She took her hands off her sister's chest, crouched down at Maud’s feet, and put them on her thighs, was she really going to go so far as to play with her sister's pussy? Then she noticed the small amount of arousal leaking out of her and she decided. Reaching out her hands she put them on either side of her sister's pussy. Then slowly, she started to part her lips, exposing the pink hole inside. Even though Maud was asleep her pussy was moist and ready inside. Marble double checked that Maud was still asleep before opening her pussy even wider. Through the moonlight she could see Maud’s still intact hymen, she knew that Maud hadn’t been sexually close to anypony before, but this made her realize that Maud’s first sexual encounter, whether she knew it or not, was with her own sister. This might have been something to think over if Marble was in a right mind, but in front of her was not only a mare's pussy, but an aroused one. Marbles arousal got the better of her as she rubbed her finger around the outside of her sister's pussy, she could feel the heat and moisture radiating from her pussy. Marble’s cock was leaking a constant stream of pre onto the floor, it was making a decent size puddle, her body desperately wanted to deposit its virile cum into this mare's womb. Slowly she started to push her finger inside her sister's pussy, wiggling and feeling around, wondering what it would feel like on her cock. As she played with her sister she pushed another finger in, she started to pump them in and out slowly, spreading her sister's pussy, and fanning her juices. Once Marble got a good whiff she could hardly control herself, her cock alternating between bumping her belly and the floor, as she pushed forward so she could get a better smell of her sister. Her fingers started going faster and faster, till she was properly finger fucking her sister's pussy in front of her. While she was getting a close look at her pussy, she started thinking to herself that since she was already down here, she should see how it tasted. She removed her fingers and started to lick the outside folds of her sister, but this quickly devolved as she tasting more and more of the aroused mare. She started pushing her tongue harder and harder against the lips, until finally she stuck her tongue inside. Not even slowing down she kept pushing her tongue deeper in until she was making out with her sister's pussy, her tongue deep inside, feeling and tasting everything it could. Suddenly she felt her sister shake a bit, the first movement of the night. Marble froze terrified that she had just been caught; instead she felt her tongue being clenched and fluid coming in her mouth. It was her sister's cum, she had just eaten her sister out till she came in her sleep. She had never felt her cock as hard as it was right then. High on adrenaline, sexual arousal, and pussy juice she had an idea pop in her head. Since she had just tasted her sisters cum, then why not repay the favor? She stood up and grabbed her long, hard, leaky, dick placing it against her sister's mouth. She pushed in just a bit trying to get some of her pre into it. Instead Maud feeling something poking her lips, opened her mouth and latched on her sister's cock head; sucking and rubbing her tongue all over it, probably dreaming of some sort of ice cream or other tasty treat. Marble froze in place at the sensation of her sensitive head being sucked and licked. She was still frozen in pleasure and surprise when her orgasm rocketed up her cock. Maud on the other hand just kept sucking in her sleep, drinking down Marbles thick cum as soon as it came in her mouth, her belly slightly distending from the big load. When she finished cumming Marble stood in a dazed post orgasmic state as her sister sucked on her slowly softening shaft, it had been the best orgasm she had ever felt. Suddenly she snapped out of it, she had just eaten out her sleeping sister till she came, then she had pumped her hot cum in her stomach. Maud was going to know something had happened. Marble quickly cleaned up any hint that she had been there, including the puddle of pre she had made on the floor. She hoped that she hadn’t left any evidence, and that Maud wouldn’t know that anything had happened last night. There was no way to tell though, until the morning came and Maud work up. Marble had trouble going to sleep that night thinking of what she had done, and how good it had felt. She promised herself though that if Maud didn’t find out that morning, she wouldn’t do it ever again. Part 3*several days later* The morning after Marble came inside Maud’s mouth had been totally normal, except for Maud eating a little less breakfast because she said she wasn’t that hungry, besides that nothing had changed so Marble kept her promise not to do anything else to Maud. That is until tonight. Marble had been working harder than normal today so was looking forward to her nightly relaxing shower. While she was taking it though, all she could think of was that nobody had noticed what she had done. She had cum directly into her sister's mouth while she was sleeping and nothing happened, not even Maud had noticed what happened. What would be the harm in trying it again? After she finished her shower, Marble went to Maud’s room and looked over her nude sister. Her bed was at the perfect height for Marble to do anything she wanted to, standing up next to it. Marble gently placed her cock head on Maud’s mouth to see what she would do. Just like last time Maud latched on to marbles cock head and started licking and sucking. Since she was getting her cock sucked she thought she might as well repay the favor, by rubbing Maud’s soft tits again. She reached out and groped her sister's tits and pulled and played with her nipples. Marble wasn’t on the verge of cumming like last time so she was better able to experience the feeling of her sister's mouth on her cock head. The best part though was when she would move or lick her tongue, it was an explosion of pleasure that rocked through her whole body. Eventually Marble could feel herself getting close to cumming, why didn’t she want to do this again? There was no worry of getting caught, and her sister's mouth felt so good on her cock. Maybe she would make it a new nightly routine to come visit her sister, instead of just jerking herself off in the shower before bed. As she felt her balls clench up releasing their cum, Marble once again locked up making it so even if she wanted to pull her cock out of her sister's mouth, she couldn’t. Maud once again drank down her sister's cum and sucked her cock dry. Marble wondered why she thought that this was a bad idea a few days ago, this was the best idea she had in a long time. *a week later* Every night for the past week Marble had been getting Maud to suck her off, but tonight she had a different plan. She was going to stick her cock in her sister's pussy, not all the way of course. She didn’t want to fully take her virginity or anything, she just wanted to know what a mares’ pussy felt like. After her shower Marble went to Maud’s room; even though she’d already decided she was going to do this, it didn’t mean she wasn’t scared, or nervous. Sure, she had tongue fucked her sister till she came, but this was still a new experience. Here she was, kneeling on the floor staring at her sister's slit wondering what she should do first. Marble gathered her courage, took a deep breath and leaned forward. Like the last time she had done this she started first tracing the outline of the pussy with her tongue, almost immediately she could feel moisture starting to seep out of her sister's pussy. She decided that first she would get it ready, her cock wasn’t small, and her sister was still a virgin. She pushed her tongue in as deep as it would go, tasting the sweet nectar hidden within. Marbles tongue swirled and prodded with both pleasure, and impatience. Once she was sure the inside was well lubricated, and tasted she pulled her tongue out and started to use her fingers to spread Maud’s tight virgin pussy. Marble plunged her middle and index fingers in and started wiggling them around inside, trying to stretch her insides in different directions. After a while of working her sister's pussy she pulled her drenched fingers out and stood up, this was what she had been waiting for. Marble rolled Maud on her side so that she was facing towards the edge she was on, and to give her easier access to Maud’s pussy. She grabbed her 15 inch long member and pressed the head up against Maud’s pussy lips, then very gently she started pushing forward. The sensation of just starting to push in was amazing, Maud’s pussy was hot as a furnace, and tight as rubber. Marble had to gently thrust back and forth for a while before her flare finally popped inside. Only the first inch or so of her cock was in but the heat and tightness was amazing, it was like Maud’s mouth, but better in every possible way. Marble slowly thrust her tip in and out, making sure not to hurt Maud’s hymen. After a few thrusts Marble had a sudden realization, she had no idea what she was going to do if she came. She quickly pulled herself out and stuck the head in her sister's mouth, thankfully Maud latched on right when she started cumming, and drank her cum down like she did every night. While Maud finished milking her cock of her cum, Marble started to think about what she could do to deal with the cum problem. She couldn’t just cum inside her sister she might get pregnant! Unless… she wouldn’t have a chance of pregnancy if Marble only came inside when Maud was on her safe days. That was the answer! She would find out when Maud was safe and if she just played with her pussy then, she would be totally fine to just cum inside. Just thinking about the idea of cumming inside Maud made Marbles cock deliver another blast of cum to Maud’s still sucking mouth. Marble could feel what it was like to cum inside a mare. All she had to do was find out when Maud’s safe days started next. *A few days later* Marble was lucky she pulled out the night she did, Maud was still fertile then but it was only a few days till Maud’s next safe cycle started. Marble knew for sure that tonight there was no chance that Maud could get pregnant, and she was ready to finally cum inside her. It was especially exciting because since that night Marble had been putting her dick in Maud every night to keep her nice and stretched, and it was even more pleasurable than just having her cock sucked. Tonight, though she wouldn’t have to pull out and just cum in her mouth, tonight she could cum inside. It was getting more exciting to see Maud every day, she had no clue what Marble was doing to her every night. Or what she thought about doing to her during the day. Here she was standing above her sister again, dick rock hard, balls full of cum, ready to “breed” a mare. As soon as Marble touched Maud’s pussy she felt it was wet, it seemed like her body followed its cycles, it knew when to go to bed, when to wake up, and when to get wet for a horny futa to fuck it. Marble wasted no time turning Maud over so she could reach her pussy. She grabbed her long hard cock and started pushing it in, stopping when she felt that barrier that represented her “virginity” through that barrier had been taking a beating over the past few days from a certain anxious futa. Once she was in as far as she could go Marble started rocking her cock back and forth inside her sister, she could feel it clenching and caressing her cock head the entire time. She started to move faster and faster, losing her composure at thoughts of being able to cum inside. Eventually she felt the telltale sign of her balls churning getting ready to cum, and she kept thrusting. When Marble came she didn’t just lose her own virginity from cumming in a mare, but also blasted through what was left of her sisters abused hymen, sending her cum deep inside Maud. *a few days later* Either Marble didn’t notice, or didn’t care that every night after her cock would fuck deeper and deeper into Maud’s pussy. Tonight she had gotten 8 inches inside Maud’s pussy, more than half her length was now plunging into her sister every night before she pumped her cum deep inside. She hadn’t cum yet tonight though, as her thick pole slammed into her sleeping sister, Marbles hips thrust back and forth at a rapid pace. Nights of slow fucking, scared of waking or tearing her virginity were long gone now. Marble knew that she was fucking Maud and planting herself deep in her every night, and she loved it. The pleasure she was getting right now fucking a mare, especially one as beautiful as Maud, was like a drug. She only hoped that she would be able to fit her entire cock inside Maud before too long. *days later* Marble was excited for tonight, Maud had just gone through a set of danger days and she could finally Fuck Maud again, right before the danger days hit she had almost hilted inside her. Maud’s pussy was drenched and waiting like it was almost every night these days, all marble had to do was roll Maud over and she could start plowing into her. Marble rolled Maud away from her and pushed her cock against Maud’s entrance. Marble knew tonight was the night that she would finally hilt all the way inside Maud and fill her deepest parts with her cum. She started pushing herself in her sister, feeling every inch of her cock entering Maud’s tight pussy. Suddenly Marble hit a wall, literally. This wasn’t just the tightness of an un fucked bit of pussy, this was her cervix, Marble could go no further and she still had an inch outside of her sister. She knew her dream of hitting her sister had now been shattered, but that was just a side thing to do, the main thing was still fucking her sister. Marble pulled her thick futa cock almost all the way out of Maud, her tip barely still inside, then she slammed herself all the way into Maud. Marble kept fucking her like this for a while, slow long hard thrusts that would drive any mare to her knees begging to be foaled by Marbles thick virile cock. Marble kept thrusting like this for many long minutes, unknowingly doing the same to Maud’s cervix as she had with her earlier hymen, fucking it into submission. Marbles thick head battered against Maud’s cervix again and again like a battering ram trying to breach a city. Marble is still standing behind her sister as her cock jackhammers in, panting and thrusting her cock as deep as it can go. Then just as she feels cum shooting up her cock she feels herself hilt all the way inside her sister. Marbles cock finally fucked its way past Maud’s cervix and entered Maud’s womb, the head expanded locking Marble in to Maud as her cum coated her womb. If this wasn’t a safe day Maud would be guaranteed to be pregnant. Thick futa cum first coated then filled her womb to capacity, Marbles dick was doing what it was made to do, ensure a mare is bred as much as possible. It took a while for Marbles flare to shrink enough to let her pull it out of Maud’s womb, and when she did a small river of cum followed it out. Marble was amazed that she had managed to pierce Maud’s womb, but she couldn’t deny that fucking a mare to the womb was the best thing she had felt yet. Marble was determined to fuck Maud’s womb every night after this, if it’s a safe day only… right? Part 4*during the day* Today had been a boring day on the Pie farm, all the chores had been done by noon, and there was nothing else to do but relax till the next day of work. Marble decided to relax in the living room until dinner time, laying on the couch asleep though was her Sister Maud. As soon as she saw her sleeping sister Marbles cock twitched in anticipation, it knew its brood mare was basically inviting it to ravish her womb. Marble tried to keep herself under control, she wasn’t alone in the house and everyone else was still awake. Even so she had to know if Maud was getting wet and ready for breeding whenever she fell asleep now. Marble carefully sat on the sofa next to the sleeping mare. Today Maud was wearing one of her loose one-piece dresses, so all Marble had to do was lift it up and see if her panties were wet, that’s all she was going to do. That’s until she saw that Maud wasn’t wearing any underwear, her pussy was dripping wet and inviting any local futa to take her for a ride. As soon as the saw that drooling pussy her member became rock hard, it wanted to fill her womb full of its thick cum. Marble tried to cover her erection somehow but 15 inches of futa cock isn’t an easy thing to hide. She couldn’t go to the shower to relieve herself either, because someone might see her. She was stuck on the couch with a rock hard cock and a drooling pussy right next to her. She knew this was some kind of cruel punishment for what she had done, but it couldn’t be helped now. She couldn’t just masturbate her problem away, where would the cum go? Then again, she did have Maud next to her. Her womb was the perfect place to pump her cum, and it was already lubricated up to take her fat cock. She wondered if this was crazy to really think about fucking her sister in the living room, in broad daylight. Either way her cock wasn't going to go down on its own, and the more time she wasted the more danger she was in. Marble pulled out her cock and rested against Maud’s entrance. She rubbed her head along her sisters fuck slit, lubing up and spreading her lips. Marble braced herself before pushing her cock all the way to the hilt in her sister, Maud’s pussy and womb were being claimed by her sisters cock. By now Maud’s Cervix had completely opened itself to futa cock, Marble was able to hilt herself anytime she wanted to, and she loved to do it. Feeling Maud’s cervix sucking on her tip when she plunged into Maud’s pussy was the best part of fucking her, it was like it was begging her to fill her womb with thick cum, to breed her completely. Marble thrust in and out of her sleeping sister on the couch, trying to keep the wet slap of futa dick into broodmare as quiet as possible. Marble could already feel that from the excitement of possibly being caught, she would blow a bigger than normal load, but she continued to hammer into her sister. In and out her cock pounded from flare to base, Maud’s pussy took every inch Marble could give her, her cock went from pussy, to cervix, to womb. Marble was starting to get further into rutting Maud now, she had pushed her hands up Maud’s dress and was grabbing her boobs, pinching her nipples. Every pinch she did caused Maud’s pussy to contract around Marbles cock, milking more and more pleasure out of Marble as they went on. Marble started slamming her hips into Maud, over a foot of cock was going in and out with each thrust of her hips, and every time it would bottom out with her cock stretching out her womb. Maud didn’t know it but at this point her body was a futa cum slut, it was always ready for Marble to come and put all the cum she could inside it, either filling up her stomach by drinking that thick delicious cum, or by pumping it into her womb to try and breed her. Every night without Maud suspecting a thing she was being filled a bred by her futa sister, and now even during the day her womb was getting filled with her cum. When Marble felt her cum getting ready she pulled out one last time and drove her cock as hard as possible into Maud’s womb, her flare expanded inside keeping her cum locked in as she pumped spurt after spurt into Maud. Her womb was completely filled with Marbles thick cum, when she was done and started to pull her mare destroying cock out, Maud’s cervix closed behind it, keeping all that cum locked inside to drown any eggs she might have. Thankfully since it was a safe day nothing would happen, but her body still hungered to keep her cum inside. Marble made herself and Maud presentable and went to go take a shower. Having fun where you might get caught seemed to make the sex even better than normal Marble thought. Part 5Marble had been having a rough week, Maud went to visit Pinkie in Ponyville for the whole week so Marble was left without her favorite cock sock to fuck every night. She thought she would be fine going back to just masterbating in the shower, but after having a pussy to cum into every night it barely satisfied her anymore. Her balls felt backed up and she needed to pump her cum in a mare or she would go crazy. Thankfully Maud had come back that afternoon and she would finally be able to relieve herself tonight. Marble was so horny she forgot to check if it was one of Maud’s safe days, all she could think about was pushing her cock deep in Maud's pussy and filling her womb with cum. Marbles cock was twitching as she looked down on Marble, her cock was drooling a constant stream of pre down the shaft. Marble had come a long way from where she started, from peaking in the door and jerking off to thoughts of her in the shower, to now pumping her womb full of cum whenever she felt like it. Now she was going to fill Mauds womb full of her cum, since she left her without one for a whole week. Marble grabbed Mauds ass and spread her legs, There was her pussy, wet and ready to embrace her cock and drain it of its cum. She grabbed her cock and started to rub it along her sisters wet pussy, coating the shaft in her juices. Marble wanted to savor the return of her sister, and her wonderful pussy. After her shaft was coated in a layer of Maud’s juices she pulled back and placed the tip on her pussy, leaking pre all over her pussy. Slowly Marble started to push her mare splitting cock in her sleeping sister, it had only been a week but to Marble it felt like at least a month since she had felt such pleasure. Mauds pussy was clenching around her cock, pulling her closer and closer to her womb. Unknown to Marble since she hadn't checked the day, Maud’s pussy wanted to be bred. Weeks of having her womb filled with cum to no effect were about to be fixed, Maud was going to have her eggs fertilised by her futa sisters fat cock. Further and further Marble went in until she touched Mauds cervix, it was flexing around her cock head, trying to coax it to shoot out its thick cum deep into her womb. Once Marbles cock bottomed out in Maud’s tight womb, she kept it there for a while, her pre cum flowing into mauds womb alone promised that Maud would be pregnant but Marble wasn't trying to do that, she just wanted to have her cock massaged by Maud’s needy pussy. It flexed and milked her cock, trying to coax the thick futa cum that would fill her up. She started to slowly pull herself out of the womb, then stopped when the tip was right inside the entrance. Marble then thrust fast and deep all the way back into Mauds womb, she felt Maud clench as she had her first orgasm because a thick futa cock was scraping the inside of her womb. Maud’s body had become a total futa slut, no stallion could compare to the way thick futa cock could ravage her womb, claim it as its own, and fill it with her cum. As Maud’s pussy flexed around her, Marble started pulling back and pumping into Maud’s womb again and again, pounding it with her fat flare. Then pulling back scraping her walls all the way, till she thrust back in again. Mauds pussy kept clenching and cumming as Marble thrust into it, desperately trying to pleasure the delicious shaft using it. Any other mare aware of what was happening to her would be begging to be bred, to have her eggs fertilised by Marbles cock. Marble’s cock was like a drug that would make any mare she used, become addicted to being dominated by futa cock. Marble could feel her balls starting to churn, she could tell this was going to be the biggest load she had ever made, and it was going straight into Mauds womb. Marbles thrusts were getting shorter and shorter as she kept thrusting into Mauds womb, Mauds pussy still clenching and cumming around it. Finally Marble felt the cum rushing up her cock and slammed into her sister's womb. It was like a dam breaking cum flooded into Mauds womb, drowning her eggs in thick futa cum. Marbles flare stopped any cum from escaping the cervix, but caused Mauds womb to expand. When Marble finished filling her sister, it looked like she had just eaten. Her stomach was distended a bit from all the cum she had pumped into her womb. Marble sat with her cock wedged in her sister's womb thinking that there was nothing like breeding a mare, she just wished she could find some more mares to share her cock with, especially since she couldn't use Maud when she was unsafe. Either way she had a womb she could breed almost every night with no repercussions, and a loving family. As she pulled her cock out of Maud she thought of her sister limestone and what she was doing tomorrow, her cock gave a subtle twitch that she wrote off as a post orgasm jerk. Author's Note Hey thanks for reading all this trash, this was the first story I wrote so it's probably my lowest quality one.
Part 1Today had been another boring day for Marble Pie, rock farming wasn’t an exciting job, but it was still one that her family had to do. Every day before she went to bed she would take a shower to clean off any dirt or grime from day before having some “personal time” for herself. Lately it seemed like she was having to “relive” herself more often and, having a 15 inch long futa cock, that meant that unless she wanted to make a mess elsewhere in the house she had to do it in the shower. It always seemed like a weird joke to her that she's, the shyest member of her family, would be the one to be born a futa and not her more forward sister Limestone or the outgoing Pinkie. Though that didn’t change the fact that right now her cock was slowly starting to harden. Since marble had more than one reason for taking a shower she would wait until the rest of the household was cozying in for the night. She didn’t want anypony to accidentally hear her as she pumped her cock, or hear her moans as she came painting the shower wall in her thick cum. Thankfully the entire Pie family was known for being very heavy sleepers, in fact her sister Maud sleep through one Hearth's Warming morning while Pinkie jumped on her bed, setting off party poppers. Maud was the heaviest sleeper in the family, and always went to bed, and woke up at the same time every day. Marble was glad that Maud’s room was the only one beside the bathroom, that let her know when it was or wasn't safe to take a shower. These things weren’t in her mind right then, instead her main focus was on her 15 inches of throbbing horse cock. Marble started her routine like she did every night, first she grabbed the head of her shaft and started to rub her palm in gentle circles around the flare, while her other hand lathered up and pumped her veiny shaft. She slid her hand up and down its length, closing her eyes and enjoying the sensation, before moving downwards to gently clean and fondle her apple sized testicles, that were more than productive enough to impregnate a mare several times over. Cupping her breast while fondling her balls, her cock started to leak pre, clear rivulets running down her shaft mingling with the water of the shower. After her balls were nice and clean, she went back to stroking her shaft. She gripped her prodigious cock and pumping her hand from base to tip. She started to pant and moan a bit while pleasuring herself wondering what it might be like to have somepony else jerk her off or, even better, somepony with a juicy hole to fill. These were just fantasies of course, she would never have the confidence to ask a mare to jerk off her cock and let her cum in their mouth, or to split them open with her impressive shaft and inject her cum deep inside them. These fantasies were the closest she would probably ever get but the thought always excited her and caused her erection to get that much harder. Moving both hands to her shaft she began furiously jerking her hands up and down, feeling every vein running up and down its length. Her knees started to weaken as the pleasure increased, her tongue lolled out of her mouth as she panted harder and harder from jerking her rod. She could feel her balls start to churn with thick potent cum. She jerked her shaft faster and faster, her hands almost a blur as her climax approached. Then she felt It happen, it was like a faucet turned on in her balls. Her cock erupted shooting ropes of cum against the shower wall, the thick goo slowly rolling down. Marble panted holding her still dripping cock for a while, trying to catch her breath. After she calmed down she finished her shower, cleaning any cum left on her cock, or body. After she finished, and cleaned up the mess she made, Marble started walking to her room, but on the way there she saw Maud’s bedroom door was open a bit. Marble thought she probably hadn’t closed it all the way when she went to bed. She, being a good sister, went to go close the door but when she looked inside she saw Maud on her bed. She was lying completely nude, her covers tucked in beneath her. The moonlight from the window was hitting her body, showing off every detail. Marble hadn’t seen Maud naked in years, she had no idea that Maud had developed so much, and in so many areas. Marble guessed she never noticed it because of what Maud wore everyday. Maud’s entire wardrobe consisted of baggy, loose clothing that hid almost all of her features, Marble had no idea of the curvy mare hidden beneath it. Mauds legs were smooth and led up to a set of full hips and plump ass, toned from a life of labor on the farm, yet still soft and full looking. Her breasts, while being rather large, seemed perky and firm. All in all a truly an undeniably beautiful mare, and Marbles body knew it. While she was looking over her sister, her cock started to twitch, and harden. Marble quickly and quietly ran down the hallway, into her own room, before she was caught peeping. Softly shutting her door Marble pressed her back against it and hyperventilated, not only had she seen her sister naked but it had even made her cock start to harden. Shaking her head in an attempt to clear the thoughts from her it she decided to just go to sleep, and pretend like nothing had happened. She couldn’t be attracted to her own sister, and she wouldn’t let the thought of Maud’s nude body keep appearing in her mind. Author's Note Hey this is the first story I've made, if you see any problems please post a comment below.
Part 2It had been a rougher day than normal for Marble, every time she looked at Maud her cock did a little jump. During her nightly shower she blew her load while thinking of her, life was getting turned upside down since she saw her naked. Marble was going to her room, but instead she stopped in from of Maud’s again. She couldn’t force herself to go on, she knew behind that door Maud was lying on her bed asleep, and nude. She reached out and opened the door Maud was lying on her bed with nothing covering herself, she was completely exposed. Marble wanted, no needed a closer look she couldn’t just stand in the doorway, she wanted to be able to see everything, so she went and stood next to her sister's’ bed. As she looked lustfully at her sister her heartbeat increased. What if Maud woke up? what if someone saw her looking over her nude sister? As she was thinking this her heart was beating in her ears like drums, but that wasn’t the only thing beating. Her cock was completely engorged and throbbing, it ached to breed this delicious looking mare. After staring for a while, and trying to breathe as quietly as possible Marble started to move. What if she touched her sister just a little bit? She could just say she was warning her that her door had been left open again, not even thinking what Maud would do, or say when she saw her throbbing horsecock. She reached her hand down and pressed it against her shoulder, her skin was soft as anything and sent a tingling sensation up Marbles arm. She then started to move her hand down from the shoulder, onto her sister's chest. She grabbed one of her sister's tits in her hand, and started to rub it. After a bit she reached out with the other hand and grabbed the other free tit. She was grabbing, and rubbing her sister's tits while she slept, with a rock hard erection throbbing between her legs. While she rubbed her sister's tits, Marble started to jerk her hips a bit, her body knew there was a female ready to breed in front of her. She was too enamored with the feeling of her sister's tits to pay any attention to her own hip thrusts, or the pre on her cock. Her sister's tits felt amazing to grope. She started to rub her fingertips on the nipples, they were hard from the night air. Maud had thick full nipples, the kind that just begged to be sucked or pulled on. Marble rubbed the dense tips around with her fingers and gave little pinches and pulls, her own nipples felt nowhere near as good to play with. It was like everything she did to them prompted another jolt through her hand, she stayed like that for a while, entranced as she rubbed and pinched her sisters nipples. Out of the corner of her eye Marble saw a slight glisten of light. When she looked down between her sister's legs, her slit was wet. If her cock was as hard as rock before it was hard as steel now. She took her hands off her sister's chest, crouched down at Maud’s feet, and put them on her thighs, was she really going to go so far as to play with her sister's pussy? Then she noticed the small amount of arousal leaking out of her and she decided. Reaching out her hands she put them on either side of her sister's pussy. Then slowly, she started to part her lips, exposing the pink hole inside. Even though Maud was asleep her pussy was moist and ready inside. Marble double checked that Maud was still asleep before opening her pussy even wider. Through the moonlight she could see Maud’s still intact hymen, she knew that Maud hadn’t been sexually close to anypony before, but this made her realize that Maud’s first sexual encounter, whether she knew it or not, was with her own sister. This might have been something to think over if Marble was in a right mind, but in front of her was not only a mare's pussy, but an aroused one. Marbles arousal got the better of her as she rubbed her finger around the outside of her sister's pussy, she could feel the heat and moisture radiating from her pussy. Marble’s cock was leaking a constant stream of pre onto the floor, it was making a decent size puddle, her body desperately wanted to deposit its virile cum into this mare's womb. Slowly she started to push her finger inside her sister's pussy, wiggling and feeling around, wondering what it would feel like on her cock. As she played with her sister she pushed another finger in, she started to pump them in and out slowly, spreading her sister's pussy, and fanning her juices. Once Marble got a good whiff she could hardly control herself, her cock alternating between bumping her belly and the floor, as she pushed forward so she could get a better smell of her sister. Her fingers started going faster and faster, till she was properly finger fucking her sister's pussy in front of her. While she was getting a close look at her pussy, she started thinking to herself that since she was already down here, she should see how it tasted. She removed her fingers and started to lick the outside folds of her sister, but this quickly devolved as she tasting more and more of the aroused mare. She started pushing her tongue harder and harder against the lips, until finally she stuck her tongue inside. Not even slowing down she kept pushing her tongue deeper in until she was making out with her sister's pussy, her tongue deep inside, feeling and tasting everything it could. Suddenly she felt her sister shake a bit, the first movement of the night. Marble froze terrified that she had just been caught; instead she felt her tongue being clenched and fluid coming in her mouth. It was her sister's cum, she had just eaten her sister out till she came in her sleep. She had never felt her cock as hard as it was right then. High on adrenaline, sexual arousal, and pussy juice she had an idea pop in her head. Since she had just tasted her sisters cum, then why not repay the favor? She stood up and grabbed her long, hard, leaky, dick placing it against her sister's mouth. She pushed in just a bit trying to get some of her pre into it. Instead Maud feeling something poking her lips, opened her mouth and latched on her sister's cock head; sucking and rubbing her tongue all over it, probably dreaming of some sort of ice cream or other tasty treat. Marble froze in place at the sensation of her sensitive head being sucked and licked. She was still frozen in pleasure and surprise when her orgasm rocketed up her cock. Maud on the other hand just kept sucking in her sleep, drinking down Marbles thick cum as soon as it came in her mouth, her belly slightly distending from the big load. When she finished cumming Marble stood in a dazed post orgasmic state as her sister sucked on her slowly softening shaft, it had been the best orgasm she had ever felt. Suddenly she snapped out of it, she had just eaten out her sleeping sister till she came, then she had pumped her hot cum in her stomach. Maud was going to know something had happened. Marble quickly cleaned up any hint that she had been there, including the puddle of pre she had made on the floor. She hoped that she hadn’t left any evidence, and that Maud wouldn’t know that anything had happened last night. There was no way to tell though, until the morning came and Maud work up. Marble had trouble going to sleep that night thinking of what she had done, and how good it had felt. She promised herself though that if Maud didn’t find out that morning, she wouldn’t do it ever again.
Part 3*several days later* The morning after Marble came inside Maud’s mouth had been totally normal, except for Maud eating a little less breakfast because she said she wasn’t that hungry, besides that nothing had changed so Marble kept her promise not to do anything else to Maud. That is until tonight. Marble had been working harder than normal today so was looking forward to her nightly relaxing shower. While she was taking it though, all she could think of was that nobody had noticed what she had done. She had cum directly into her sister's mouth while she was sleeping and nothing happened, not even Maud had noticed what happened. What would be the harm in trying it again? After she finished her shower, Marble went to Maud’s room and looked over her nude sister. Her bed was at the perfect height for Marble to do anything she wanted to, standing up next to it. Marble gently placed her cock head on Maud’s mouth to see what she would do. Just like last time Maud latched on to marbles cock head and started licking and sucking. Since she was getting her cock sucked she thought she might as well repay the favor, by rubbing Maud’s soft tits again. She reached out and groped her sister's tits and pulled and played with her nipples. Marble wasn’t on the verge of cumming like last time so she was better able to experience the feeling of her sister's mouth on her cock head. The best part though was when she would move or lick her tongue, it was an explosion of pleasure that rocked through her whole body. Eventually Marble could feel herself getting close to cumming, why didn’t she want to do this again? There was no worry of getting caught, and her sister's mouth felt so good on her cock. Maybe she would make it a new nightly routine to come visit her sister, instead of just jerking herself off in the shower before bed. As she felt her balls clench up releasing their cum, Marble once again locked up making it so even if she wanted to pull her cock out of her sister's mouth, she couldn’t. Maud once again drank down her sister's cum and sucked her cock dry. Marble wondered why she thought that this was a bad idea a few days ago, this was the best idea she had in a long time. *a week later* Every night for the past week Marble had been getting Maud to suck her off, but tonight she had a different plan. She was going to stick her cock in her sister's pussy, not all the way of course. She didn’t want to fully take her virginity or anything, she just wanted to know what a mares’ pussy felt like. After her shower Marble went to Maud’s room; even though she’d already decided she was going to do this, it didn’t mean she wasn’t scared, or nervous. Sure, she had tongue fucked her sister till she came, but this was still a new experience. Here she was, kneeling on the floor staring at her sister's slit wondering what she should do first. Marble gathered her courage, took a deep breath and leaned forward. Like the last time she had done this she started first tracing the outline of the pussy with her tongue, almost immediately she could feel moisture starting to seep out of her sister's pussy. She decided that first she would get it ready, her cock wasn’t small, and her sister was still a virgin. She pushed her tongue in as deep as it would go, tasting the sweet nectar hidden within. Marbles tongue swirled and prodded with both pleasure, and impatience. Once she was sure the inside was well lubricated, and tasted she pulled her tongue out and started to use her fingers to spread Maud’s tight virgin pussy. Marble plunged her middle and index fingers in and started wiggling them around inside, trying to stretch her insides in different directions. After a while of working her sister's pussy she pulled her drenched fingers out and stood up, this was what she had been waiting for. Marble rolled Maud on her side so that she was facing towards the edge she was on, and to give her easier access to Maud’s pussy. She grabbed her 15 inch long member and pressed the head up against Maud’s pussy lips, then very gently she started pushing forward. The sensation of just starting to push in was amazing, Maud’s pussy was hot as a furnace, and tight as rubber. Marble had to gently thrust back and forth for a while before her flare finally popped inside. Only the first inch or so of her cock was in but the heat and tightness was amazing, it was like Maud’s mouth, but better in every possible way. Marble slowly thrust her tip in and out, making sure not to hurt Maud’s hymen. After a few thrusts Marble had a sudden realization, she had no idea what she was going to do if she came. She quickly pulled herself out and stuck the head in her sister's mouth, thankfully Maud latched on right when she started cumming, and drank her cum down like she did every night. While Maud finished milking her cock of her cum, Marble started to think about what she could do to deal with the cum problem. She couldn’t just cum inside her sister she might get pregnant! Unless… she wouldn’t have a chance of pregnancy if Marble only came inside when Maud was on her safe days. That was the answer! She would find out when Maud was safe and if she just played with her pussy then, she would be totally fine to just cum inside. Just thinking about the idea of cumming inside Maud made Marbles cock deliver another blast of cum to Maud’s still sucking mouth. Marble could feel what it was like to cum inside a mare. All she had to do was find out when Maud’s safe days started next. *A few days later* Marble was lucky she pulled out the night she did, Maud was still fertile then but it was only a few days till Maud’s next safe cycle started. Marble knew for sure that tonight there was no chance that Maud could get pregnant, and she was ready to finally cum inside her. It was especially exciting because since that night Marble had been putting her dick in Maud every night to keep her nice and stretched, and it was even more pleasurable than just having her cock sucked. Tonight, though she wouldn’t have to pull out and just cum in her mouth, tonight she could cum inside. It was getting more exciting to see Maud every day, she had no clue what Marble was doing to her every night. Or what she thought about doing to her during the day. Here she was standing above her sister again, dick rock hard, balls full of cum, ready to “breed” a mare. As soon as Marble touched Maud’s pussy she felt it was wet, it seemed like her body followed its cycles, it knew when to go to bed, when to wake up, and when to get wet for a horny futa to fuck it. Marble wasted no time turning Maud over so she could reach her pussy. She grabbed her long hard cock and started pushing it in, stopping when she felt that barrier that represented her “virginity” through that barrier had been taking a beating over the past few days from a certain anxious futa. Once she was in as far as she could go Marble started rocking her cock back and forth inside her sister, she could feel it clenching and caressing her cock head the entire time. She started to move faster and faster, losing her composure at thoughts of being able to cum inside. Eventually she felt the telltale sign of her balls churning getting ready to cum, and she kept thrusting. When Marble came she didn’t just lose her own virginity from cumming in a mare, but also blasted through what was left of her sisters abused hymen, sending her cum deep inside Maud. *a few days later* Either Marble didn’t notice, or didn’t care that every night after her cock would fuck deeper and deeper into Maud’s pussy. Tonight she had gotten 8 inches inside Maud’s pussy, more than half her length was now plunging into her sister every night before she pumped her cum deep inside. She hadn’t cum yet tonight though, as her thick pole slammed into her sleeping sister, Marbles hips thrust back and forth at a rapid pace. Nights of slow fucking, scared of waking or tearing her virginity were long gone now. Marble knew that she was fucking Maud and planting herself deep in her every night, and she loved it. The pleasure she was getting right now fucking a mare, especially one as beautiful as Maud, was like a drug. She only hoped that she would be able to fit her entire cock inside Maud before too long. *days later* Marble was excited for tonight, Maud had just gone through a set of danger days and she could finally Fuck Maud again, right before the danger days hit she had almost hilted inside her. Maud’s pussy was drenched and waiting like it was almost every night these days, all marble had to do was roll Maud over and she could start plowing into her. Marble rolled Maud away from her and pushed her cock against Maud’s entrance. Marble knew tonight was the night that she would finally hilt all the way inside Maud and fill her deepest parts with her cum. She started pushing herself in her sister, feeling every inch of her cock entering Maud’s tight pussy. Suddenly Marble hit a wall, literally. This wasn’t just the tightness of an un fucked bit of pussy, this was her cervix, Marble could go no further and she still had an inch outside of her sister. She knew her dream of hitting her sister had now been shattered, but that was just a side thing to do, the main thing was still fucking her sister. Marble pulled her thick futa cock almost all the way out of Maud, her tip barely still inside, then she slammed herself all the way into Maud. Marble kept fucking her like this for a while, slow long hard thrusts that would drive any mare to her knees begging to be foaled by Marbles thick virile cock. Marble kept thrusting like this for many long minutes, unknowingly doing the same to Maud’s cervix as she had with her earlier hymen, fucking it into submission. Marbles thick head battered against Maud’s cervix again and again like a battering ram trying to breach a city. Marble is still standing behind her sister as her cock jackhammers in, panting and thrusting her cock as deep as it can go. Then just as she feels cum shooting up her cock she feels herself hilt all the way inside her sister. Marbles cock finally fucked its way past Maud’s cervix and entered Maud’s womb, the head expanded locking Marble in to Maud as her cum coated her womb. If this wasn’t a safe day Maud would be guaranteed to be pregnant. Thick futa cum first coated then filled her womb to capacity, Marbles dick was doing what it was made to do, ensure a mare is bred as much as possible. It took a while for Marbles flare to shrink enough to let her pull it out of Maud’s womb, and when she did a small river of cum followed it out. Marble was amazed that she had managed to pierce Maud’s womb, but she couldn’t deny that fucking a mare to the womb was the best thing she had felt yet. Marble was determined to fuck Maud’s womb every night after this, if it’s a safe day only… right?
Part 4*during the day* Today had been a boring day on the Pie farm, all the chores had been done by noon, and there was nothing else to do but relax till the next day of work. Marble decided to relax in the living room until dinner time, laying on the couch asleep though was her Sister Maud. As soon as she saw her sleeping sister Marbles cock twitched in anticipation, it knew its brood mare was basically inviting it to ravish her womb. Marble tried to keep herself under control, she wasn’t alone in the house and everyone else was still awake. Even so she had to know if Maud was getting wet and ready for breeding whenever she fell asleep now. Marble carefully sat on the sofa next to the sleeping mare. Today Maud was wearing one of her loose one-piece dresses, so all Marble had to do was lift it up and see if her panties were wet, that’s all she was going to do. That’s until she saw that Maud wasn’t wearing any underwear, her pussy was dripping wet and inviting any local futa to take her for a ride. As soon as the saw that drooling pussy her member became rock hard, it wanted to fill her womb full of its thick cum. Marble tried to cover her erection somehow but 15 inches of futa cock isn’t an easy thing to hide. She couldn’t go to the shower to relieve herself either, because someone might see her. She was stuck on the couch with a rock hard cock and a drooling pussy right next to her. She knew this was some kind of cruel punishment for what she had done, but it couldn’t be helped now. She couldn’t just masturbate her problem away, where would the cum go? Then again, she did have Maud next to her. Her womb was the perfect place to pump her cum, and it was already lubricated up to take her fat cock. She wondered if this was crazy to really think about fucking her sister in the living room, in broad daylight. Either way her cock wasn't going to go down on its own, and the more time she wasted the more danger she was in. Marble pulled out her cock and rested against Maud’s entrance. She rubbed her head along her sisters fuck slit, lubing up and spreading her lips. Marble braced herself before pushing her cock all the way to the hilt in her sister, Maud’s pussy and womb were being claimed by her sisters cock. By now Maud’s Cervix had completely opened itself to futa cock, Marble was able to hilt herself anytime she wanted to, and she loved to do it. Feeling Maud’s cervix sucking on her tip when she plunged into Maud’s pussy was the best part of fucking her, it was like it was begging her to fill her womb with thick cum, to breed her completely. Marble thrust in and out of her sleeping sister on the couch, trying to keep the wet slap of futa dick into broodmare as quiet as possible. Marble could already feel that from the excitement of possibly being caught, she would blow a bigger than normal load, but she continued to hammer into her sister. In and out her cock pounded from flare to base, Maud’s pussy took every inch Marble could give her, her cock went from pussy, to cervix, to womb. Marble was starting to get further into rutting Maud now, she had pushed her hands up Maud’s dress and was grabbing her boobs, pinching her nipples. Every pinch she did caused Maud’s pussy to contract around Marbles cock, milking more and more pleasure out of Marble as they went on. Marble started slamming her hips into Maud, over a foot of cock was going in and out with each thrust of her hips, and every time it would bottom out with her cock stretching out her womb. Maud didn’t know it but at this point her body was a futa cum slut, it was always ready for Marble to come and put all the cum she could inside it, either filling up her stomach by drinking that thick delicious cum, or by pumping it into her womb to try and breed her. Every night without Maud suspecting a thing she was being filled a bred by her futa sister, and now even during the day her womb was getting filled with her cum. When Marble felt her cum getting ready she pulled out one last time and drove her cock as hard as possible into Maud’s womb, her flare expanded inside keeping her cum locked in as she pumped spurt after spurt into Maud. Her womb was completely filled with Marbles thick cum, when she was done and started to pull her mare destroying cock out, Maud’s cervix closed behind it, keeping all that cum locked inside to drown any eggs she might have. Thankfully since it was a safe day nothing would happen, but her body still hungered to keep her cum inside. Marble made herself and Maud presentable and went to go take a shower. Having fun where you might get caught seemed to make the sex even better than normal Marble thought.
Part 5Marble had been having a rough week, Maud went to visit Pinkie in Ponyville for the whole week so Marble was left without her favorite cock sock to fuck every night. She thought she would be fine going back to just masterbating in the shower, but after having a pussy to cum into every night it barely satisfied her anymore. Her balls felt backed up and she needed to pump her cum in a mare or she would go crazy. Thankfully Maud had come back that afternoon and she would finally be able to relieve herself tonight. Marble was so horny she forgot to check if it was one of Maud’s safe days, all she could think about was pushing her cock deep in Maud's pussy and filling her womb with cum. Marbles cock was twitching as she looked down on Marble, her cock was drooling a constant stream of pre down the shaft. Marble had come a long way from where she started, from peaking in the door and jerking off to thoughts of her in the shower, to now pumping her womb full of cum whenever she felt like it. Now she was going to fill Mauds womb full of her cum, since she left her without one for a whole week. Marble grabbed Mauds ass and spread her legs, There was her pussy, wet and ready to embrace her cock and drain it of its cum. She grabbed her cock and started to rub it along her sisters wet pussy, coating the shaft in her juices. Marble wanted to savor the return of her sister, and her wonderful pussy. After her shaft was coated in a layer of Maud’s juices she pulled back and placed the tip on her pussy, leaking pre all over her pussy. Slowly Marble started to push her mare splitting cock in her sleeping sister, it had only been a week but to Marble it felt like at least a month since she had felt such pleasure. Mauds pussy was clenching around her cock, pulling her closer and closer to her womb. Unknown to Marble since she hadn't checked the day, Maud’s pussy wanted to be bred. Weeks of having her womb filled with cum to no effect were about to be fixed, Maud was going to have her eggs fertilised by her futa sisters fat cock. Further and further Marble went in until she touched Mauds cervix, it was flexing around her cock head, trying to coax it to shoot out its thick cum deep into her womb. Once Marbles cock bottomed out in Maud’s tight womb, she kept it there for a while, her pre cum flowing into mauds womb alone promised that Maud would be pregnant but Marble wasn't trying to do that, she just wanted to have her cock massaged by Maud’s needy pussy. It flexed and milked her cock, trying to coax the thick futa cum that would fill her up. She started to slowly pull herself out of the womb, then stopped when the tip was right inside the entrance. Marble then thrust fast and deep all the way back into Mauds womb, she felt Maud clench as she had her first orgasm because a thick futa cock was scraping the inside of her womb. Maud’s body had become a total futa slut, no stallion could compare to the way thick futa cock could ravage her womb, claim it as its own, and fill it with her cum. As Maud’s pussy flexed around her, Marble started pulling back and pumping into Maud’s womb again and again, pounding it with her fat flare. Then pulling back scraping her walls all the way, till she thrust back in again. Mauds pussy kept clenching and cumming as Marble thrust into it, desperately trying to pleasure the delicious shaft using it. Any other mare aware of what was happening to her would be begging to be bred, to have her eggs fertilised by Marbles cock. Marble’s cock was like a drug that would make any mare she used, become addicted to being dominated by futa cock. Marble could feel her balls starting to churn, she could tell this was going to be the biggest load she had ever made, and it was going straight into Mauds womb. Marbles thrusts were getting shorter and shorter as she kept thrusting into Mauds womb, Mauds pussy still clenching and cumming around it. Finally Marble felt the cum rushing up her cock and slammed into her sister's womb. It was like a dam breaking cum flooded into Mauds womb, drowning her eggs in thick futa cum. Marbles flare stopped any cum from escaping the cervix, but caused Mauds womb to expand. When Marble finished filling her sister, it looked like she had just eaten. Her stomach was distended a bit from all the cum she had pumped into her womb. Marble sat with her cock wedged in her sister's womb thinking that there was nothing like breeding a mare, she just wished she could find some more mares to share her cock with, especially since she couldn't use Maud when she was unsafe. Either way she had a womb she could breed almost every night with no repercussions, and a loving family. As she pulled her cock out of Maud she thought of her sister limestone and what she was doing tomorrow, her cock gave a subtle twitch that she wrote off as a post orgasm jerk. Author's Note Hey thanks for reading all this trash, this was the first story I wrote so it's probably my lowest quality one.
