Chapters The lights in the Sparkle bedroom were dimmed. The house was mostly silent, safe for some gurgling noises in the master bedroom and a monotonous thumping sound coming from a few rooms over.
Night Light leaned his back against a mountain of pillows, his rear comfortably resting on his mattress, his legs spread wide apart. His dark blue length glistered in the dark, standing at full mast with it's typical slight bend. Below it lay two impressively big blue orbs, already swollen and ready to release their load, drenched in a mix of saliva and precum dripping down from above. Night's hoof was planted firmly on the back of the mare's head that was currently tending to his rod, slowly guiding her up and down his entire length.
"And you know, things just like, lose their edge when they become routine."
A sharp gasp came in response as his member excited safe for the tip, allowing some precious air inside. Night waited a second before applying pressure again, his penis disappearing down her throat once more, her nose kissing his groin again.
"Back when we were young, everything was just so new, so exciting. Like our first kiss, remember that honey?"
"Glrg"
"Exactly! Or the first time you gave me a teatfuck. That felt so incredible. You didn't get the stains off your belly for weeks."
As she came back up a sharp gasp filled the air, but Night Light was too lost in his memories to notice. He slammed her right back down, her nose booping hard against his crotch as she got another throat full of dick.
"And of course our first foal. I was so proud when I got to hold Shining for the first time, it felt like the best day of my life."
"Hrrk"
"I know, dear. Or when we had our first time together, the real first time. You were amazing, Twilight, I thought I couldn't even last a second thrust."
Said Twilight made it half way back up, the medial ring just slipping out between her lips before the hoof on her head forced her down again.
"Umpf"
"And that one time I tricked you and shoved it up your ponut. By Luna, you gripped me like a vice. But I guess you just can't make lightning strike twice, you were never this tight again."
With that memory in mind Night yanked her up, holding the wheezing and coughing mare steady as he aimed his shaft square at her muzzle. With her mane wrapped around his hoof her face hung helplessly, her jaw dropping from exhaustion.
"Open up, here it comes."
The mare in question barely managed to squeeze her eyes shut before the first squirt hit her right in the face. The thick liquid spread quickly through her fur, staining it a shining white as it traveled down. The second load followed almost immediately, even more copious than the previous one, dying her entire cheek a new colour. Now fully caught in his climax, wave after wave of Night Light's semen splashed against her, soaking her fur down to the skin.
One shot landed right below her horn, slowly trickling down over her eyelid as the next finally managed to hit her mouth, the musky taste immediately spreading all over her tongue. Night grabbed a hold of his spewing member, guiding it with his other hoof and making sure to mark his mate thoroughly, leaving no patch of fur dry. Helpfully he lined his tip up with her nostrils, just so she could enjoy a noseful of spunk too, and he was immediately rewarded by another sneezing fit.
Finally his orgasm wore off, the last beads dripping down onto the bedsheets. His cock grew soft and slowly drew back into his sheath, and he released his hold on his trusty cum rag. Her head dropped like a stone, resting on his stomach as he slowly stroked her back, her wheezing now the only sound audible to them.
"You know what I mean honey, right?"
Twilight slowly opened her eyes, careful to not get any of the creamy stuff covering her face into her vision. Two annoyed eyes glared up at Night Light from between a sea of white.
"Not really, but I'm glad you found time to complain about your boring sex life while bucking your daughter's throat raw."
"Oh, come on Twi, you know I didn't mean it like that."
"Whatever, Dad. I'll go get Shining and Mom, from the sounds of it he's finished too by now."
"What do you need them for?"
"Well, since I'm apparently too mundane for you, we'll have to find something new to get you excited again."
A few minutes passed before the entire Sparkle household had assembled on their parents cozy bed. Although the musky air had cooled down a bit, Twilight's mood had not.
"And then he said he can't get excited because nothing is a first time to him anymore."
Twilight finished her little rant, looking expectedly at her mother, while idly stroking a fatherly cock with her hoof pads.
"I see. And uh, Twily, you got a little thing on your face there, honey. Like on your cheeks, your lips, your horn, your-"
"I know mom, just tell me what I should do."
The younger Twilight answered, swirling her tongue to at least clean her lips before the stains dried up.
"Well, to be honest, we kinda started this whole free use family thing because we were both getting a little bored of each other."
Twilight Velvet answered, shifting her hips slightly on her son's face.
Shining made a muffled noise, almost entirely drowned out by the ponut over his muzzle.
"You know the rules mister, you cum in there, you eat it out again. Now use that tongue of yours and keep rimming."
"I know mom, but there's just so many poses in the ponysutra, and we did all of them at least twice by now."
"Hmm, I see what you mean. Tell you what, I think I might know just the spell you need to keep your father happy. And Shining could use some variation in the bedroom as well, I caught him reading a comic while I was riding him dry yesterday."
The older mare rose from her comfortable seat, her son gasping for air below her.
"Shining, Nighty, go get on your backs next to each other, and get your cocks ready, you'll need them."
Her son didn't need to be told twice, shuffling over next to his dad, both of them lying flat on their backs with their members standing at attention.
"Now we need some close contact for this spell to work. Shiny, would you mind if I take a seat?"
"Of course not, mom."
Velvet was already stepping over him, lining her bottom up with his tip before sinking his length between her folds in their much practiced cowpony pose. Quickly she bottomed out, her hips bumping against his, their gazes meeting for a moment as they both adjusted to the feeling.
"A-alright Twily, now you. Hop on your father's cock and then lean over to me. And you two, keep your little swimmers in, it's not a safe day for us."
Twilight slid down next to hear, moaning slightly as Night's shaft disappeared inside her. Leaning over, the mare's heads met, their horns rubbing against each other before finally making contact at the tips.
"Horn touching, how lewd!"
"Hush, Shining, mommy needs to concentrate. Twilight, you just open your thaumatic matrix, I'll cast the spell and you just boost it as hard as you can. We'll need a lot of power for this one."
"Got it, mom."
"Alright then, everypony hold tight, here we go."
A silver light burst from Velvet's horn, a gleaming shine filling the room. A moment later it mixed with Twilight's purple, the combined brightness forcing everyone's eyes firmly shut. The high pitched whistling coming from the magic swirls drowned out any other noises, and hot waves of tingling sensations raced through the pile of ponies. With a loud thunder the spell reached its powerful climax, the entire room lit by magic lightning for just a moment before everything died down.
Carefully the four unicorns opened their eyes, blinking little flashes away before looking around. Night looked a his wife with a puzzled expression on his face, unsure how this little display of magic fireworks was supposed to help his sexual urges. He had hoped for something spectacular, like a second penis, or a super long tongue, or maybe finally the permission to put a daughter in his daughter. But from the looks of it nothing changed. Even worse it looked like he had even gone soft in Twilight, her tight marehood no longer squeezing him, no longer feeling she like begged him to be filled. If anything he felt like getting filled, the yearning void inside him- wait a second.
Night Light did a double take at his lower half, where he and his daughter were connected just a minute ago. The connection was still there, but it had changed significantly. His lower area had two very prominent new features, a pair of deep blue crotchboobs protruding from his waist, nipples poking into the air from the sudden shock. Between them rested a fat purple length, very clearly sprouting out of his equally confused looking daughter.
Night's view snapped back to his wife, his mind racing with questions yet unable to form a single sentence. The display he was presented with didn't help matters one bit, as Velvet was evidently not at all surprised by their new situation. Her hooves were firmly pushing Shining's new appendages together, the shocked stallion looking down at his brilliant white teats. Velvet's new marecock was thrusting in and out between them, leaving a slick trail of precum on her son's belly. Their reversed roles were clearly arousing her immensely, and after only a few more shoves the gasped, unloading a fat nut right into his chest fluff.
"Sorry Shiny, I got carried away for a second there."
"Mom?"
"Yes Shining?"
"Mom?"
"Yes Twilight?"
"Dear?"
"Yes Night?"
"What the BUCK is going on?"
The next few minutes were filled with a lengthy and decidedly unsexy explanations of magical object manipulation and its implications for living subjects, as well as some careful prodding and stroking of various new body parts. Velvet was enthusiastically wrapping up her little speech, giddy to finally have a chance of trying her new trick out with her little herd.
"And that's it, just as simple swapping spell. You can use it on any part of the body really, but what's the point of trying out each other's legs."
"Where did you even learn such a spell?"
"Oh you know, Nighty, those waiting room magazines for ripe mares aren't just about diets and knitting. One has a very interesting column for bedroom spells."
"How long does it last? I can't walk around like this in public."
"Don't worry, Shiny, it's just for as long as we want. When we're done I'll cast the reverse spell and all organs will return to their respective owners. We'll just have some fun with them in the mean time."
"What fun did you have in mind, trying on each other's lingerie?"
"Intriguing, but no. I thought since you and Shining grew bored with your mares, we could flip roles for a night. So for the next few hours, oh, I don't know, Twi and I could buck you in all your old and new holes until you can't walk straight. How's that sound, Twilight?"
"Sounds good to me Mom, I mean Dad, I mean, whatever. Let's start bucking."
"Alright mom, how do we do this? Do I just lie here and you stick it in or what?"
"Hold your horses, Shiny. You have never had a horny colt shove his dick up your virgin snatch before, and for that matter, neither have you, Night. So how about you two get yourself familiar with these horsecocks before they stretch all your holes?"
Quickly Velvet and her daughter moved to the edge of the bed, letting their legs dangle as their erect cocks hung in the air, pointing slightly upwards towards the ceiling. Night Light and Shining jumped onto the ground, carefully eyeing the strangely familiar appendages now waiting expectedly right before their muzzles.
Night moved first, gingerly licking Twilight's purple shaft with his tongue, eliciting a cute little gasp from her. Shining followed his example, the two fresh mares quickly adapting to their new roles, licking and pecking all over their mates' brand-new genitals.
Night then moved upwards, pecking his daughter's unflared tip and the little hole on top while his son opted for broad strokes, curling his tongue around the gray shaft and moving up and down the entire length. The stallions above them leaned backwards, admiring their work as they enjoyed the new sensations. Their own mouths and throats had pleased their horny family members many times before so this was definitely a welcome change.
Velvet smirked at her daughter. Their mares had done a good job lubing them up, but now it was time for the next stage. They both moved their hooves down simultaneously, slowly but firmly guiding their heads up and over their tips.
Shining looked over a Night for advice, the older pony looking equally unsure at the broad tip pocking him in the muzzle. The white unicorn shrugged, opened his mouth, and slowly swallowed the marecock in front of him. Careful not to use his teeth he moved downwards until the tip hit the back of his throat. Clearly this meant that his depth was reached and he pulled back, helplessly moving up and down the very front of Velvet's cock. Next to him Night was equally struggling, not sure how he was supposed to deal with a rod this size.
The two mares experimented further, suckling on their tips to try and maybe get them to release their load this way. Clearly they needed some guidance, and their Twilights were more than happy to provide it to them. One hoof planted sturdy over each horn, Shining and Night suddenly found a constant pressure forcing them downwards, their throats forced to accommodate their intruders no matter what. The choking and gurgling from below was music to Velvet's ears, and her son's throat now provided her with an excellent massage, rippling and heaving all around her shaft. Further and further they pushed their members down, the tapered forms and thick medial rings not making matters any easier.
Nevertheless Shining and Night bottomed out, their muzzles meeting the sweaty crotches almost simultaneously. Only now were they allowed back up, both pulling off far enough to inhale some much needed fresh air, but stopped before popping completely off. And a moment later they went down again, this time requiring a little less force from above. A few minutes of training and both had found their pace, their heads dutifully bobbing up and down the shafts, their throats now sufficiently widened for their new task.
Velvet has closed her eyes, savoring the moment as her son tended to her, her hoof now merely a passenger on his head. She could feel another height approaching, this one far more pronounced than the quick release before. Before she could utter any warning it hit her, and Shining was surprised by a warm load suddenly spewing into his stomach just as he was at the lowest point of his journey. A second, third and fourth wave all splashed in his belly before Velvet yanked him up, eager to give him a mouthful of her spunk as well. The sudden pressure overwhelmed him once again, and Shining's cheeks bulged out, wide eyes looking on as cum shot out his nostrils.
"Don't swallow!"
Velvet ordered him.
"Open your mouth and show mommy how much of a slut you are."
Slowly he obeyed, lowering his head and revealing a sea of white behind his bottom lips.
"Good girl."
Velvet purred, stroking his cheek as Shining sampled the new taste.
Delighted she noticed that Twilight has filled her mare in the same way, Night's belly now bulging in a similar fashion as he looked up with puffed cheeks.
"You two, don't let our loads go to waste. Get together and share them with each other so you know what you'll be getting."
Unsure father and son looked first at her, then at each other. Slowly the moved together, carefully bringing their chests and faces closer and closer together. Finally their lips met, locking immediately to form a tight seal. The spell now broken, they both felt more at ease, embracing each other as their mouths opened. Their tongues met each other, swirling around to mix each other's cumshots, a heavenly mixture of musky semen now sloshing around between their faces.
Twilight and Twilight watched them with content faces, both slowly jerking their sloppy members to keep them out and ready. Velvet couldn't deny it, seeing her two studs making out with each other so passionately did wonders to her, and her daughter clearly thought the same, judging by her equally steady hard-on. Seeing how their new cum dumps had adapted to their new bisexual role so quickly, the gray mare took the initiative again. Jumping to her hooves, dick bobbing against her chest, she grabbed hold of her husband, pulling him out of his french kiss and spilling their shared load on the ground.
"Kissing is great and all, Night, but your mouth can be used on far better holes. Get your back on the bed, it's time for you to do some real filly fooling."
The older stallion did as he was told, too perplexed to question his wife's newest plan. His daughter meanwhile had gotten the idea immediately, pulling his lower half to the very edge of the bed frame once he was lying down.
Velvet urged Shining after him, getting him to climb onto the mattress with some playful spanks on his rear. Stepping over his father, he now faced the opposite direction, his arousal already dripping on Night Light's muzzle. His son didn't offer any real resistance when his wife, who had quickly climbed onto the mattress with them, chomped down on Shiny's tail, pulling his rear down and square on Night's face.
His vision was immediately filled by luscious white flanks, a tight winking marehood now waiting right above his mouth. Without even thinking about it his tongue zapped out, giving the virgin slit a first experimental lick. Shining's face above immediately showed the appropriate reaction, lighting up with bliss from the first real attention his vulva had gotten this evening, the wet slurps coming from behind him mixing with his own moans. His hind legs spread apart a bit further, his rear getting even lower and closer to the source of pleasure. He wasn't allowed to dwell in this pose for long though, as Twilight quickly reached out to his mane, pulling the front of his body equally low, his view suddenly coming to rest on Night's petite pair of crotchboobs.
"Your dad is trying so hard back there, don't you think it would be proper for a lady to return the favour, Shiny?"
"I-I don't know Twi, should I-"
"Oh, come on, don't play coy. You have eaten Mom's pussy often enough, this one's no different. Now get your tongue in there and go to work."
Without awaiting any further protest Twilight planted her hoof behind her brother's horn and pushed him down, his muzzle colliding with a dripping dark blue entrance, causing a wet splash. Deprived of other options he resigned to his fate, letting his own tongue loose and exploring Night's winking marehood.
Quickly the pair grew accustomed to their new position, their textbook sixty nining convincing Velvet she needed to try this with her daughter as soon as they were done here. Their front and rear legs locked with each other, tongues tracing swollen pussy lips before diving inside again, with the occasional flicks over each others winking clits. Soon their own juices started flowing, little spurts of marecum flowing right in their open mouths.
Twilight had scored a special vantage point for their little show, still standing on the hard floor, now eye to eye with her father's increasingly pulsating pussy. Night's tail hung down from the edge of the bed, heavy from various liquids soaking into it. It exposed his rhythmically contracting tailhole as well as his puffy vulva, now dripping wet from his own arousal as well as Shining's constant onslaught of licks and kisses.
She was drawn closer and closer to it by an invisible hoof, her nostrils practically on fire from the sweet musk emanating from the tight pink canal behind blue lips. Fixed between her brother's face on top and her parents bed below it was at optimal height, inviting her to rear up behind them and enter, the now constantly winking clitoris practically begging her to come inside.
The purple mare didn't even notice her front legs tensing before jumping up, hooves landing perfectly around Shining's midsection. Her dick prodded at all possible targets, hitting various flanks and cheeks before aiming a bit too high, swiftly sliding down her brother's unprepared throat, the choking stallion lubing her up even further for what she was about to do. A few times she thrust into his mouth, enjoying his tightness while her mother at the other side of the pile copied her moves, liberally using her husband's mouth. Both mares pulled out simultaneously, a wet slurp coming from each face, their dicks now rock hard and ready to claim their mare.
Meeting each other's cocky grin both Twilight's angled themselves correctly, Velvet now pointing slightly further up while her daughter lined herself up lower than before. Reaching their destinations, a dripping wet purple tip now kissed quivering blue lips and a gray one playfully rubbed up and down a needy white entrance. Both mares drove themselves forward, stretching the tight channels around them, their primal stallion urges overwriting any hesitation.
Their shared foreplay had done wonders to prepare each horsepussy, and only a few thrusts in each pair managed to slip the corresponding medial ring past a madly winking clit. The mare's hips soon looked like pistons, each thrusting forward at a relentless speed, not caring about the moans and groans coming from the ponies in their middle.
Twilight could feel herself bottoming out, her tip slipping through Night's innermost barrier. Still she did not slow down, her mother's fiery gaze spurring her on as Velvet herself pushed past Shining's cervix. Hips now colliding with thunderous slaps, their sensitive pussy lips grew red, relentlessly pounded by their horny mates.
Night's ponut received its own spanking by Twilight's heavy balls slapping against it with each thrust while his face was smothered in turn by his wife's swollen nuts. Not to be left out, Twilight had somehow found the strength to muster a magical object at least somewhat reminiscent of an erect horsecock, ramming it down Shining's throat just for good measure. Stimulated in such an intense way, the two ponies trapped on top of each other had no chance against the onslaught from both sides.
Night could feel his first vaginal orgasm approaching fast, and he was more than willing to let it happen. His pussy contracted like crazy, milking the horsecock within for all it was worth. His daughter was evidently not far behind, plunging herself as deep as she could inside his depths before freezing, her flaring tip sealing him shut. Night Light's entire body erupted in pure bliss as he felt the first gust of semen hitting his inner walls, filling his womb with the precious hot liquid. Twilight meanwhile was completely lost in her climax, her balls contracting again and again and she pumped her daddy full. Her telekinetic dick did the same, shooting an equally large load of concentrated magic down Shining's throat before disappearing into thin air, his marehood in response clenching down even harder on Velvet.
Said pony could not last any longer, her sons incredible strong muscles finally causing her to blow. A massive stream of cum raced down her shaft and burst into the white unicorn, painting his throbbing insides a matching colour. Not keen on wasting any of the precious liquid she pressed her hips against his as close as possible. Still not satisfied Velvet quickly summoned a tight magical ring, jerking herself off into him as her own pumping slowed down, making sure to squeeze every last drop inside. Ever the thoughtful mother she formed a second one around her daughter's cock, helping her release inside her dad as well.
Finally their balls were drained, and both mares slowly withdrew their still flared tips from the now much more sloppy holes. Night was roused from his blissful afterglow by a wave of cum and maregasm splashing into his face, the same mixture now very clearly running down over his rear and into his tail.
"Unf. That felt amazing. No wonder you too are so horny all the time."
His daughter remarked.
"Thanks, dear. Could you help your brother up, I think he's a bit wobbly right now."
"Already? As I see it you two have another perfectly fine pair of holes ready that we haven't tried yet? Right, mom?"
"Absolutely dear."
His wife answered from above him.
Before he could object, Night could feel the touch of a now very familiar tip, this time right against his puckered ponut. For a moment it dawned on him that this night wouldn't end well for the two of them, before a cock the size of his lower leg was shoved up his tailhole, drowning these thoughts out completely.
The sun had already started to come up again when their shared family activity had slowly reached its climax. Shining was seated in his sister's lap, slowly riding out his latest orgasm after they all had agreed to switch partners. Turned around to rest his back against her belly, they both now looked at the other pair in the room as Twilight continued to slowly thrusts upwards to the beat of her pumping shaft. Streams of hot semen were running down her member on all sides, and she enjoyed the additional warmth as she nuzzled her BBBFF's neck, her hoof idly flicking his exposed clit.
Their parents in front of them meanwhile were reduced to a blur of blue and gray, Twilight Velvet mercilessly pounding her husband in a mating press, Night Light on the bottom unable and unwilling to move anywhere. Velvet's fat dick traveled up and down lick a jackhammer, slamming into Night's pussy over and over again, their ponuts pulsating at their watching kids in the same rhythm. Her horsecock was pulsating too, pumping a constant stream of white cream into the foal hatch below. Cum was bubbling up on around it, making it look like a volcanic eruption.
Shining Armor was enjoying the intense attention his body got, but strangely the display in front of him was not arousing him, worse, it even felt off-putting. He nudged his sister below him, pointing her to the pounding in front of them.
"What do you think about them, Twilight?"
"Huh, about mom and dad?"
"Yeah, do you feel, like, weird, watching them like this?"
"Huh, you're right, it does feel a bit weird."
Velvet slowed her assault down, hilting in her mate before looking back at the noise behind them.
"Enjoying the show, kids?"
"Too be honest mom, we kinda don't."
"What do you mean, Shiny, what's wrong?"
"Well, it's just, it doesn't seem right."
"Seem right? You mean because I am supposed to be the mare and he the stallion?"
"No no, it's not that."
"Oh, I see. Shining, there is no need to be jealous, your dad and I are more than capable of sharing our love with you two."
"It's not that either mom."
Twilight chimed in.
"It's just-"
"Just what?"
"Just that you two aren't related."
Shining finished his sister's sentence.
"It feels wrong, seeing you do something like this with a non-family member."
"Really? Do you feel the same, Twilight?"
"I do, mom. I'm sorry, it just feels like it's against our nature."
"I see."
Velvet turned back, looking down at Night's face, his expression one of being fucked silly to the point of no longer hearing their conversations. She gave him a peck on the muzzle, rousing him slightly from his cum drunk stupor.
"You hear this Night, your kids don't want ponies to buck each other if they're not related."
"Oh, that's a shame."
"It is. Good thing it doesn't affect us, right brother?"
"Right, sis."
"WHAT?"
Twilight gasped, squirting another load into her brother.
"You two are siblings?"
"That's right, Shiny. What, did you think your incestuous urges were a coincidence? To be honest, I'm surprised it took you this long to realize, did you never wonder why you only had one pair of grandparents?"
"Huh, yeah, that is strange now that you mention it."
"Now if you would excuse your father and I, I have another load in my balls that I need to pump into my brother."
"Knock yourself out mom."
With that Velvet rose up, slowly pulling her erection upwards, Night's pussy clinging to it as best as it could. The second her legs straightened out she thrust back down, nailing the pony below her into the mattress. Her balls raced upwards and a few moments later a giant gush filled Night Light's already sloshing womb, a mixture of hers and Twilight's cum splattering out from around their connection. Night screamed his orgasm into his wife's mouth, his legs flailing helplessly in the air as his pussy pulsated madly, adding his marecum to the torrent that showered their children behind them.
Velvet looked over at her husband and son. The two mares were a mess. Their entire bodies shivered from exhaustion, barely keeping themselves seated on the mattress. Their sore legs threatened to buckle under the slightest strain and wobbled with each small step. Their bellies were swollen and sloshing, each thoroughly filled through all three holes.
Shining's fur had a more forgiving colour but Night's blue coat was now more akin to a work of modern art, stained white and soaked through and through with their combined juices. Their manes and tails were on another level still, now looking like glorified cumrags that would require hours of washing and cutting to get into any sort of acceptable shape again.
Not helping matters were their leaking holes, Shining's gaping ponut constantly dripping onto his tail while a seemingly constant stream of cum ran from Night's pussy and onto everything below him. Her son also had a rope of her spunk still trailing from his lips, he himself not even noticing or bothering to lick it up, while a similar one hung down from her husband's horn.
While clearly a success, Velvet's experiment had clearly spiraled out of control, and with their balls now finally drained perhaps it was a good time to call it a night.
"Alright, anypony else wanna try anything before I turn us back?"
"Nope."
"Me neither."
"No, you can get started. And don't let me forget to fetch some ice packs afterwards, me and dad are gonna be sore as Tartarus tomorrow."
"Why you two, wasn't it our pussies you were pounding, I mean we, I mean ugh, it's still confusing."
"I don't know about that, but it sure was my ponut that you two were double dicking earlier."
"Alright then, you three. We'll do it the opposite way now. Twilight, you and I lay on our backs and Night and Shining will ride us."
Contrary to earlier in the evening, Night Light now sunk his wife effortlessly up his marehood, and his son followed suit.
"Giddy up Twily, here I come!"
Once both mares had taken their seat the two Twilight's strained their necks, holding their horns together as Velvet cast her reverse spell. Again the room was filled with a spectacular light show, gray and violet mixing once again to the deafening hum of magic. The flash momentarily blinded everypony just as it had before as the spell reached its climax. Once done, the four ponies looked at their privates expectedly.
"Huh, what, why didn't it work? I'm still a mare."
"So am I. What's going on, Velvet?"
"That's strange, the spell should have reverted all changes. Twilight, what about you."
"Still a fifth leg."
"Hmm, the instructions didn't say anything about- oh no."
"Oh no? What's oh no?"
"Hold on a second, could you two get off again for a moment."
Shining and Night Light looked at each other worriedly before slipping off their partner's members. Velvet immediately rose to her hooves, walking over to the new mares, inspecting their bodies closely. Her horn flared to life and scanned over their privates, her face somehow growing paler even under her gray fur the further her spell traveled.
She looked up at her son, an apologetic smile forced on her face.
"Uhh, Shining, congratulations."
"Congratulations on what mom? What's going on?"
"Well, how do I say this? You're pregnant, it's quadruplets. At least."
"Wha-"
"And Night, let me check again. Yup, you'll be a mom too, with quintuplets, wait a second, nope, there's a sixth one."
"Pregnant? What? How? Velvet, what are you talking about?"
"Hmm, you see, remember when I mentioned that me and Twilight are in heat? Well, when we switched organs you two kinda received our fertile wombs, and we got your breeding instincts in return."
"Oh right. Usually I only have to worry about not getting a creampie from you, so I didn't even think about what would happen when I would give you one."
Twilight added in a shocked tone.
"And what does that mean?"
"Come on Night, do I really have to explain the birds and the bees to you?"
Velvet replied.
"Two horny stallions just spent the last couple hours pumping you two full with a few buckets worth of foal batter, all the while your ovaries were firing out one egg after the other. What this means is we need a bigger house. A much bigger one."
"P-pregnant, oh Celestia, we are pregnant. And what about the spell, why didn't it work?"
"It's a built-in fail safe, the spell doesn't work when it detects a pregnancy. Too dangerous otherwise. But look at the positives!"
"What could possibly be positive about that?"
"Well, you'll only have to stay like this for eleven months. Maybe a few longer if lactating blocks it too, who knows. Oh and you'll grow some massive milkers for me, so that's something."
Shining's blood had drained from his face completely by now. Desperately he pawed at his marehood, clenching his muscles to squirt the cum still inside back out.
"I can't have a foal mom, I'm not ready yet."
"Don't worry Shiny, it will be far more than one. And unless you want even more, you should stop clenching, that'll only push even more semen up into your womb. I can detect five in you by now, and there's still some eggs swimming around in our spunk. I do wonder why you two make for such perfect broodmares, that's definitely not from us."
"Oh buck, why did we do this? You talked us into this Velvet!"
"Hey now, it was you who wanted to try something new, Night Light! You got what you wanted, your first time being a mother."
"First time, more like only time."
"We'll see about that, my nostrils are full of pregnant mares right now and it's driving me wild. Who knows, I might put a few more buns in your oven once this batch is done. Oh and Twilight?"
"What is it, mom?"
"Be a dear and talk to Princess Celestia tomorrow. Your position as a librarian won't exactly cut it anymore."
"And what am I supposed to tell her? That I need a better paying job because I grew a dick and knocked my father and brother up with a whole herd worth of foals?"
"For example, yes."
"Ughh, alright. I'll write her a letter."
Author's Note
Apparently my workflow for these competitions is as follows:
