Author's Note

This isn't the canon ending to BMBF. I wrote it over a year ago, and it was meant to be a bonus little thing once the story was all finished. Cosmo was also going to add a portion to it at the end as a timeskip, but that never came to pass. After giving it some thought, I've decided to post it here as-is. Enjoy.

Big Mare, Bigger Family Non-Canon Ending

“Are ya sure you wanna do this?” Apple Bloom asked for the third time.

It was dark and quiet in the field below Scootaloo and Rumble’s cloud home. They rarely got non-winged visitors out here, but the ones that did knew the way quite well. Apple Bloom was one such visitor.

Scootaloo, a giant in every way, laughed from her lofty vantage point. “I’ve never been more sure in my life! Rumble wants this, I want this, Our family wants this.”

Apple Bloom chewed on her lip. She glanced down at the pair of corked vials in her hooves, a clear, seemingly-harmless looking liquid swirling within. “Look, I-I know you got your heart set on this, but this stuff is right powerful! Not only will it put Rumble into rut, but his swim team numbers’ll go through the roof! And you’ll be puttin’ out so many eggs with this, I may as well start calling you a chicken again!’”

Scootaloo shivered. The mere idea alone was enough to make her wet. “Does it also do the other thing we talked about?”

Apple Bloom had had a feeling her words would fall on deaf ears. She didn’t know why she bothered. “Yeah, yeah. He’ll have no problems takin’ ya, I promise that.”

Scootaloo wiggled her hips. Being gigantic was amazing, but it did come with a few downsides. “Goooooood…”

Apple Bloom sighed. “I’m startin’ to feel like I’m enabling you. If it were anypony else asking this, I’d tell ‘em to sod off. Only reason I’m in your camp is ‘cause I’ve seen how good you’n Rumble are with your kids. How you manage fourteen is beyond me, but I ain’t never seen a happier bunch than ya’ll, so…”

Scootaloo crouched onto her belly, lowering her head so she could see Apple Bloom eye to eye. Her friend barely came up to her knees anymore. “Our family will only be happier the bigger it gets. Pinkie Promise.”

Apple Bloom managed a weak smile. She nuzzled Scootaloo’s cheek, humming at the warmth flowing off her friend. Scootaloo’s head alone was almost as big as Apple Bloom’s entire body. “You’ll have to be even more careful once ya start gettin’ even more giant. Ya realize that, right?”

Scootaloo’s laugh was a low rumble. “I get around fine now, don’t I? What’s the difference between twenty feet tall, and fifty feet tall?”

Apple Bloom blanched. “Fifty?! Now hold on—”

“Would you look at the time!” Scootaloo flicked the vial out of Apple Bloom’s grip with a wingtip. “Thanks for the potion, AB! Byeeeeeeeee!”

“SCOOTALOOOOOOOO!” Apple Bloom’s voice faded as Scootaloo took to the air on enormous wings. Her bounty secured, she now set sights on the puffy clouds of home above, where a certain gray stallion waited...

***

“Did she bring it?” Rumble asked.

Scootaloo grinned. She held out the tiny vials—well, tiny to her, anyways.

“Awww, yeah!” Rumble sprang up from his chair. “Let’s put it with the others!”

Their home had certainly gone through a transformation. Once a simple cloud building, it’d been upscaled to an enormous place with incredibly high ceilings. And not just the ceilings, everything in the house had been upscaled! They went to their enormous bedroom, where there on a table were two other sets of vials—one set contained a watery purple fluid, and one set contained an ooze-like red fluid.

“So.” Rumble examined the spread of potions. “The ones from Apple Bloom are undiluted conception boosters. The ones from Mage Meadowbrook are ancient enhancement elixirs, and Zecora’s draughts boost the effects of any declared spells and alchemical effects for twenty-four hours.”

Scootaloo licked her lips. “Ohhhhh, you’re gonna make me so BIG…”

Rumble was already hard as a rock. The heavenly smell of Scootaloo’s heat was so alluring, he’d had to spend most of his time at work so he wouldn’t knock her up early.“Let’s measure you one more time for reference.”

They went over to the far wall, where a list of measurements were listed on the wall. The list gradually rose higher and higher until it reached Scootaloo’s current towering height.

“Nineteen feet, ten and a half inches,” said Scootaloo. “Still shy of twenty feet.”

“Not for long.” Rumble held up the vials. “Shall we?”

They started with Apple Bloom’s first. Scootaloo had some issues opening it due to her size, so Rumble finally just popped the cork for her. They downed the first pair at the same time.

“Mmm.” Scootaloo licked her lips. “Sweet!”

Next was Mage Meadowbrook’s. Upon taking a single whiff of the brownish-green mixture, they knew it wasn’t going to be pleasant.

“Ugh!” Rumble nearly gagged on his dose. “Tastes like moldy brussels sprouts!”

Scootaloo made a face as well. “Definitely not my favorite…”

Last was Zecora’s. Her potions were a mixed bag in terms of taste, so they weren’t really sure what to expect.

“Huh.” Scootaloo smacked her lips. “Doesn’t taste like anything.”

Rumble had a similarly puzzled face. “Weird.”

They stood there looking at each other a few seconds, waiting for the effects to kick in.

“Soooooo,” Rumble said. “Do we bang now? Or…”

Scootaloo giggled. She scooped him up like he was a doll, taking them to the bed and letting him lay atop her. He snuggled up against her warm body, humming and nuzzling her chest. Her coat was full and thick, and he could practically taste her. He could barely describe her aroma—rich, healthy, full… that simply didn’t do it justice. It was as if he’d gone around his whole life with corks in his nose, and only now had he taken them out.

“Mmmm.” Rumble buried his nose in her coat. “You’re so BIG, babe…”

Scootaloo stroked his back. “And about to get bigger.”

Rumble kissed her chest. “SO much bigger…”

Scootaloo shivered. “How… how many we gonna have?”

“As many as we can,” he murmured. “You’re a shrimp compared to what you’re about to be…”

Scootaloo could feel him dripping onto her coat, and she was already picturing him brushing against her entrance, leaking and teasing her outer lips. Already his nuts burgeoned within his hefty sack from the previous fertility spell, filled to the brim with and bloated with cum. She wanted ALL he had and then some... feel it flood and fill her womb once more. He’d be even more full this time, and the power of his seed combined with her fertile depths…

Rumble was starting to feel funny. The world spun around him for an instant before waving and shuddering. He hiccuped and coughed, feeling like he was drunk on the undiluted need of a fertile mare… his mare.
Rumble shivered. Pulses of something were beating inside him like a second heart, and with each one came a feeling of becoming more. He stretched his limbs as much as he could, but try as me might, he wasn’t stretching far enough. Then a fresh pulse would come, and he’d get that last little bit of stretching he craved, only for it to start all over again…

Rumble’s eyes flew open. “What…” He was rising atop Scootaloo, and not just from her breathing. He looked at his legs as a fresh pulse swept through him, and he saw himself growing, swelling larger before his eyes! “Whoa!”

Scootaloo’s reply was a low nicker. “You can’t knock me up if you’re small, babe. Sorry, but you gotta be BIG tonight.”

Rumble gulped. An addictive heat was building, starting in his belly and roiling out to flow into his limbs. “Th-This is… oh fffffuck… temporary, right? I know I ssssssssaid I’d be okay trying it, b-but...”

Scootaloo laughed. “Let’s see how you feel afterwards.”

The other effects were creeping up now. A tingling was crawling into Rumble’s nuts, a heaviness and fullness like he’d never known. Deep inside his core, he could feel a strange sensation, and in its wake was a pressure... a need. He could feel his hyper-virile package swelling further, now becoming godly.

Scootaloo flared her nostrils. Rumble always smelled amazing, but now that dry, heady scent was intensifying in every way. “Oh my god…”

She could feel his weight increasing. At a little over seven feet, Rumble was no small stallion, but now he was becoming one like no other. His wingspan got longer, his muscles bulked up further, his legs lengthening as all of him itched. He was moaning low and steady, clutching Scootaloo in steady squeezes that seemed in time with his heart, but still he grew larger.

Rumble was barely aware of anything. All he smelled was Scootaloo—all he wanted was Scootaloo. He wanted to take her in every sense, to put foal after foal into her and show the world who this mare belonged to. Nothing would stop him. Nothing COULD stop him! She was HIS!

“Heh…” The laugh escaped him before he could stop it. “Ha ha ha!”

Scootaloo was now starting to feel the effects as well. The gnawing, clawing emptiness of her heat was becoming unbearable. Her eyes became dilated, locked onto the scene unfolding before her. Her beloved Rumble, ten feet and still growing, was looking at her in a way that made her shiver. Eyes gleaming, teeth bared in a hungry smile, breathing audibly with his tense posture, wings fanned out and twitching.

Scootaloo’s marehood winked hard. “R-Rumble...”

Rumble laughed again. He merely held her gaze, barely moving, growing bigger and stronger before her eyes. Soon he could stand over her, properly stand over her for the first time in they didn’t even know how long. He didn’t grind on her, didn’t betray any weakness, he just stood there, his eyes devouring her like she was a feast. His cock was sandwiched between them, always growing, always leaking, never easing up even for a second, dripping as much as she was, yet never quite at full mast.

Scootaloo watched as he rose more and more over her. She nearly lost it as his balls slid over her drenched crotch, full to the brim and all for her. She squirmed from a strange heat pooling in her belly, like teeny-tiny coals tumbling down. A familiar fog was settling in her mind, desperate and yearning, single-minded and irresistible. All she could feel was HEAT, and she was empty and horny and willing and so very ready and oh sweet goddess he was still looking at her like that and he was just so BIG and she didn’t know how much longer she could—

He kissed her. He was frenzied and fast, his tongue forcing its way into her mouth, moaning and enveloping her lips with his. She squealed and pulled him into the tightest embrace she could, but it was like hugging a rock. She matched his fervor and kissed back with equal strength, but try as she might, wiggle as she might, she found she couldn’t move an inch. He had her pinned.

Pinned.

Her.

“MMMMMmmm!” Scootaloo wrapped her wings around him. Her tail pressed into their cloud bed so hard it left an indent, and now she was grinding on him. His huge cock was like a building column, and she wanted nothing more than to feel it spread her wide, wide, wide—

Rumble broke their kiss.

“Get up,” he growled.

She was on her hooves in a flash. She had a split second to appreciate he was now a good head taller than her before he spun her around and shoved her halfway back onto the bed. She arched her spine and bent her legs, blushing heavily as her tail raised of its own accord, moaning like the mare in heat she was.

Every single thing he did was a turn on. From the way he gripped her flanks, to the way she felt him rear, to his sturdy, solid weight settling atop her, to his wings enveloping her—trapping her. His touch was anything but gentle, but she’d be just as rough in his shoes. She sucked in a breath through clenched teeth as she felt him crawl forward feet at a time, still chuckling under his breath, a humongous stallion about to claim his humongous mare.

She was about to snark at him to get on with it when he bit her scruff and tugged.

“AHHHHHH~”

That yell was music to Rumble’s ears. Not quite on tune, though… He nipped her ear to fix that, and now it rose to the perfect pitch. He could feel her panting and shaking, her scratchy voice cracking in that adorably cute way, her plush coat so soft and full against his. Her long mane was like a purple curtain he wanted to bite, and her scent was like a perfume that urged him forward.

Scootaloo could feel him at her entrance. He was trying to get aligned, the sheer weight of his package making him sway back and forth. She nearly lost it when she felt him slap up against her barrel and leave a sticky splotch, but she just managed to hold on, fighting the urge while he tried and failed once… twice… thrice—

And then there were no words. There were no yells, no grunts, no sounds of any kind. Their voices fled them in that instant, sensitive nerves and synapses dialed up to eleven and centered all in one place. Rumble was all instinct as he pushed inside, but he was so BIG he was having trouble. He was filling her… filling her, stuffing her with a pulsing thickness she hadn’t known for far too long. He didn’t stop for breath, didn’t stop for anything, he was a relentless fucking machine. Even as Scootaloo’s lips spread around their prize, she could only think about how she wanted every inch—no, every foot, inside her! She wanted to clamp down so hard that not a drop escaped her, giving her everything she wanted and MORE!

The only sound Rumble registered was the loud schlick of pushingDEEPinto Scootaloo’s silky depths. She was so very wet and warm, enveloping him in totality, a snug and slick marehood ready for the rutting. He knew she could take all of him, so he held nothing back in his savage thrusts, each one claiming more of her tunnel. He planted love bites on her neck again and again, punctuating each one by snorting, sucking, licking, and chewing on her ears. The majority of him had stopped growing now, but his nuts still filled by the second, their size unrivalled by any other stallion in Equestria. He was soon buried inside her all the way, but he gave her no time to adjust, instead rearing back and THRUSTING, a stream of slippery fluid lubing his path.

NOW Scootaloo found her voice. Her girly scream rose in a crescendo, high and loud and needy beyond all measure. Every thrust carried that promise of fullness, that feeling of being seeded… of being bred, but it had yet to come. In and out, in and out, in and out, Rumble thrust hard and fast without mercy, and she clenched him hard each time, literally sucking his dick back inside. Her body knew relief was coming, and the hungerin her belly would have what instinct demanded.

The wet SCHLAP of their thighs was like a belly flop off a diving board. It was hard to tell who was more frenzied, the whole room reverberating with their sexy sounds. Rumble’s grunts and groans joined Scootaloo’s in a lewd duet, their thoughts consumed by each other as they fucked, kissed, bit, thrusted, sucked, and chewed. They went all out on each other with no punches pulled, caught in a frenetic sprinting race to the finish, and as that finish drew near, their efforts only served to grow more and more desperate.

Scootaloo could feel it. She knew it was coming, and her only thought was that it wasn’t here sooner. She egged Rumble on with each squeeze, relishing how his stallionhood twitched, his bloated balls about to boil over. He snorted like a mustang and kept pistoning with a vengeance, his thrusts now uneven and jittery, each one somehow deeper… DEEPER. Rumble had never felt such a great pressure in his loins, but that only pushed him onward, and he sprinted past the point of no return to bury himself one final time…

“YESSSSSSSS!” It was like an explosion that just kept going off. Scootaloo swore she could feel Rumble’s seed taking root, as plentiful as it was potent, each gush a fresh burst that sent her soaring, saturating her and jolting her core anew. She was beyond capacity to tell when one spurt ended and another began, all she knew was he was pumping her full of life. Which was a shame, because if she had been, she would’ve realized that Rumble was going on far longer than he had any right to, erupting in her again and again like a geyser, each spurt a hot surge that painted her insides white.

Scootaloo was lost amidst a sea. A boundless sea of seed funnelling into her equally boundless womb, all of which she welcomed with a single thought of MORE. Her world began and ended where they were joined, and over and over he filled her, her smooth muscles working to keep in as much as she could. At some point Rumble’s first peak died down, but he immediately resumed fucking her into the mattress, his eventual second peak punctuated by a loud moan of her name. Then he was right back to railing her, never breaking, never stopping, a cycle of build-up and climax that felt better on each lap. But Scootaloo wouldn’t have it any other way, for every time Rumble quenched her heat, it came roaring right back the instant he started again.

BANG!

She wasn’t sure when the first happened. It could’ve been minutes, or maybe they’d been going for hours. All Scootaloo knew was that Starlight’s spell went off at some point, a tingling shock jolting like electricity. She grew a few inches instantly.

“RUMBLE!” Scootaloo came hard. How many times that made she didn’t know, all she knew was that she was pregnant.“YES!”

Twenty feet now. She’d officially broken two stories, and they both knew it was just the beginning—

BANG!

Every inch of her was alive. There were two inside her now, two one right after the other, and… oh sweet stars, she really COULD feel them! She could feel them so deep inside her, tingling and building, preparing for another—

BANG! BANG!

Her last pregnancy had been with ten. A lofty record, but they were used to aiming high. Now there were four inside her, and the half foot she grew in that instant was enough to make her voice give out. So many, so fast! She wanted more, had to have more! And Rumble certainly didn’t disappoint, a fresh orgasm pumping gallons into her needy womb.

BANG!

Five now, but that tingling was still ever present, a build-up that was only getting stronger. The fifteen inches now would be nothing compared to how much she grew overall. She couldn’t tell how many little coals were inside her, only that there were a lot! How they hadn’t yet been claimed was beyond her—

BANG! BANG! BANG! BANG!

Scootaloo grew an entire foot in a second. The sensation would’ve made her collapse had her legs not been locked, secured by both instinct and need. She didn’t know whether Rumble noticed what’d happened, but either way he resumed fucking her, his balls fuller and more needy than ever.

BANG!

And there was ten. They’d officially tied their record, yet neither of them showed any signs of stopping. It was bizarre how simultaneously empty and full Scootaloo felt, but this juxtaposition didn’t stop her from mewling her need.

BANG! BANG!

Twelve wasn’t nearly enough. They didn’t just want to break their record, they wanted to shatter it. They had the ability, they had the desire, they had everything they needed and more.

BANG!

Rumble came again. It was seemingly unending, yet that just made her more excited. Blazing hot pinpricks were inside her, each one holding so much potential. Yet there was still untolds more just waiting to be created, and there was nothing stopping each and every one of them from becoming—

BANG! BANG!

Then he started knocking her up faster. Each new foal inched her up a little bit more, brought her head that much closer to the ceiling. Their bedroom was thirty-five feet high, would she break through it before they were done?

BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG!

Two feet larger in an instant. She was catching up to Rumble already, but still he plowed her like there was no tomorrow. Each of them was insatiable, overjoyed by every single new life. A deluge was now oozing out of Scootaloo, but for every bit that fell out, Rumble pumped twice as much in.

BANG! BANG! BANG! BANG!

She was growing so fast now. Her heart soared from so many inside her, yet part of her knew she could hold more. And Rumble was giving them to her! He yelled out loud as the largest orgasm so far ripped through him, filling her with wave after virile wave, each release greater than the last! His balls were absolutely massive now, churning and rumbling while barely contained by their stretchy sack, and their depths would all soon flow inside—

BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG!

Scootaloo shook. Three feet taller all at once was a feeling that she couldn’t even put to words. Over and over and over Rumble got her pregnant, and every time she grew that much more. He never stopped taking her, never stopped pumping seed into her, never stopped making her a mother! Every time a new load was emptied inside her, she felt that heat burn again, and then an instant later—

BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG!

The area was starting to feel cramped, their bulk enveloping the entirety of the room and then some. Rumble’s head was already pressed against the ceiling, and hers looked to be following suit soon. Yet that was the advantage of a cloud home—if they broke something there, they could just shape it back together. Neither of them had reservations as Rumble resumed fucking her again, their lusts just as hot and building quicker than ever. It wouldn’t be long before his orgasms were rolling into each other…

BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG!

“OHHHHHHHH!” Scootaloo rocketed through the ceiling. Her rump smashed through the far wall, her wings snapping free to punch through a few more. She was the biggest pegasus the world had ever seen, and this was just from her getting pregnant! Soon these children would grow healthy and strong, causing the spell to make her even greater!

There were so many foals being conceived it sounded like fireworks. Rumble was cumming again in seconds, his thrusts fevered and frenzied even as she doubled his size, but when his orgasm died down, he thrust a total of once before exploding once more. His legs weren’t touching the ground anymore, but his cock and balls certainly were, swelling and groaning with even more potent seed!

And that potency certainly showed. Their ceiling was broken further as Scootaloo shot up ten more feet, her impossible wings able to envelop the entirety of their home. And yet even still she felt more coals entering her womb, each one a precious life she wanted so very badly to nurture…

BANG!

Scootaloo was running out of space to stand. This might’ve been a problem, but she was so big she merely stepped off the cloud and glided to the ground. Rumble never stopped for a second while remaining firmly lodged inside, fulfilling his sacred duty again and again, lost in the throes of a never-ending orgasm.

BANG!

Scootaloo was growing nonstop now, just like Rumble was cumming nonstop. He couldn’t even stay atop of her if he wanted to remain inside her, but he was fine with gripping and kneading her huge, thick ass. He continued to pump her full even as she grew underneath him, the overflow spurting all around him, his mighty cock still wedged in tight. It wasn’t enough yet… not nearly enough yet. He could smell she was still fertile, eager and desperate to be bred. She was still nothing compared to what she’d be when he was done with her.

BANG! BANG!

Scootaloo felt her hooves touch ground. Some part of her noted she had to be enormous to be so high up yet, but that thought merely brought her to an especially strong peak. It was even stronger once she realized she was still rising higher, each powerful THRUST of Rumble’s creating an even greater explosion inside her! She could feel her hooves spreading, sinking deeper into the ground, pushing the dirt away as she was fucked bigger, more of a parent!

BANG! BANG! BANG!

He was still filling her. Still knocking her up faster by the second, and now the rest of him was growing again! Rumble’s impossible sack gurgled and groaned as he lustily emptied into her, but that didn’t mean he slowed at all. He continued to rut Scootaloo silly, each gush making him a father countless times over, yet they wanted more… MORE! His nuts were bottomless. She was willing and able. There was no reason to stop now, no reason to stop EVER!

BANG! BANG! BANG! BANG! BANG!BANG!

A single drop of cum would’ve been enough to continue impregnating her at this point, and hot coals were entering her womb by the tens of thousands. She registered that Rumble was growing again, his weight increasing atop her and the power of his thrusts increasing, and that just made her clench all the harder. She could just barely keep all of his gift inside her...

BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG! BANG!

Scootaloo didn’t know how many there were anymore. All she knew was that there was about to a whole lot MORE! If all of this just from getting pregnant, she’d be mountain-sized by the time she was full-term! Perhaps even country-sized! Or BIGGER! She’d have so many sons and daughters she could populate an entire hemisphere!

BANG!

And it was certainly starting to look that way. Not only was Scootaloo still getting pregnant, but it was easier for her to keep his seed inside the bigger she got! She had the capacity to conceive billions, and the the thought alone of that made her want them that much more! Soon she’d be able to carry the planet itself within her nourishing womb!

“More…” Scootaloo’s voice rumbled as she grew. “MORE!”

BANG! BANG!

It felt like her heat was only getting stronger. For every new life she felt inside her, the desire to keep going strengthened. The full effect of the potions had kicked in now, as even as she grew beyond a thousand feet, she was that much hornier, that much more willing to be taken! And Rumble was continuing to catch up to her in size, his massive form now about half hers again, his titanic gushing cock stretching her so wide! Each of his balls held several lakes worth of precious cum, and she wanted all of it… every single one of his sperm to become a foal!

BANG! BANG! BANG!

With Rumble’s greater size came greater capacity, and greater capacity meant Scootaloo grew all the faster. Scootaloo cried out long and lewd as she felt herself suddenly not double, but triple in size and then some, approaching almost a mile in height from becoming pregnant alone! Her body responded in kind and began releasing eggs faster, exponentially faster, exploding like amazing orgasms so much faster in fact that the eggs started catching up to the amount of sperm! Rumble was still gushing, positively gushing into Scootaloo, clutching her more and more and he grew in size and power, but Scootaloo wasn’t about to be outdone. She wasn’t going to waste ANY of his seed!

“RUMBLE!” Scootaloo’s voice boomed over the Ponyville Valley. “MORE!”

BANG! BANG! BANG! BANG! BANG! BANG!

And he gave her more. He gave her more, and more, and more. His thrusts were becoming more powerful, more cum exploding from his cock with each one even as he thrust faster. Soon he was bigger than her again, growling like thunder as his delicious impossible weight pressed her down lower. From then on them taking turns outpacing each other in size. Sometimes Rumble would be the giant one, and other times Scootaloo would be, Either way, the place where they were joined was plugged tight, Scootaloo’s cervix sucking every last bit of cum inside to get her even more pregnant.

Scootaloo’s eyes rolled back. Neither she nor Rumble were showing any sign of stopping their growth, weren’t showing any sign of wanting to stop. They just wanted to expand their family over and over, bigger and bigger, caring for each and every foal within Scootaloo’s life-giving womb—

BZAM!

A blue burst struck Rumble in the back of the head. He was out cold before he even realized, his still-gushing cock continuing to spurt on its own. His titanic form was enveloped in lunar magic and pulled free of Scootaloo’s fertile marehood, lifted as easily as a feather to hover in the air.

“Enough,” said a silvery voice.

An apparition of Princess Luna appeared in a swirl of soft shadow. She was little more than a flea compared to Rumble, but the power flowing off her made her shine like the north star. Her ghostly body phased in and out of the Dreamrealm as she studied Rumble with eyes bright as galaxies, the night sky above thrumming and pulsing.

SH-P-P-P-P-P-P-P-P-P!

Everything stopped. Nothing moved, nothing breathed, nothing showed a single sign of life. It was like all of existence had been turned into a painting save for Luna, screeched to a halt with a sound like an airtight seal.

A vertical tear in space appeared. Light spilled out like the radiance of heaven as Princess Celestia stepped through, so bright you couldn’t even look at her. She gave Rumble a perfunctory glance before turning to the two-mile-tall Scootaloo, now frozen, but still in the thrall of growth from the dual rivers of tiny coals emptying into her expanded, half-a-mile uterus.

“Oh, drat,” Celestia muttered. She flew up to Scootaloo’s barrel, her vision soon a landscape of warm, orange fur. Scootaloo’s lustrous hairs were each thick as a vine and almost as long as a hoofball field. “Alright, Lulu, alright. I should’ve listened to you.”

“Later,” Luna whispered in Celestia’s head. “Even with them separated, the magic has awakened their latent powers in full. Scootaloo will continue to ovulate faster and faster until she’s been impregnated by every spermatozoa inside her.”

Celestia blushed. She could sense Scootaloo’s inner muscles had clamped down tight to seal in Rumble’s seed, her ballooning womb filled to the brim. Her face lost was in ecstasy as her body shook with power and size, the potent aroma of life so strong it penetrated Celestia’s wards.

“I’m sensing far more in them than the potion young Apple Bloom spoke of,” Luna went on. A kaleidoscope of dark colors swirled about her, spreading out to enshroud Scootaloo and Rumble. “You might want to see this for yourself. ”

Celestia withheld a sigh. She followed Luna’s lead and cast her own scanning spell, two beams of purest light leaping forth. She learned of the magic draughts the duo had taken, but more important than that, she also learned…

“It’s high time we had a chat with these two,” Luna said in Celestia’s mind. “According to my calculations, Rumble’s sperm count per milliliter is just over one billion. If we combine that with the maximum volume capacity of Scootaloo’s uterus and the rate she’s producing new ovum, in just two hours, she’ll be pregnant with over six quadrillion foals. And factoring in the growth spurt she receives from each conception alone, that’ll make her over one trillion miles tall.”

Celestia swallowed hard. “She’ll be pushing a light year by full term…”

“And they were just getting started,” Luna said in a cool voice. “The nature of life is to grow and multiply without end, Tia, and we both know they’re going to want to have as many of these new children as possible. I understand your hesitance to tell them about their divinity, but they’re about to outgrow this solar system and conceive enough foals to populate a spiral arm of this galaxy. Will you deny them their very nature?”

Celestia glared at her. “You know I’d never do that.”

“Then tell them,” Luna said. “Tell them who we really are, and who they are. Show them how to spread themselves out across the dimensions so they’re not tormented by their impulses. You were steward of my domain for too long, Tia. The shadows have left their mark on you.”

Celestia groaned and ran a hoof down her face. “The light reveals, the shadows conceal… I really have lost my edge, haven’t I?”

Luna’s voice softened. “You’ll get it back. I’ll help you’ll remember what it means to be the Goddess of Light, and soon this subtlety and passiveness will be a thing of the past. But it means you have to start taking action sooner than this.”

Celestia’s gaze was drawn to Scootaloo’s mile and a half long barrel, already rounded and full with her Rumble’s hyper-virile seed. “Yes… much sooner.”

The End