Author's Note

This is intended as an idea dump of sorts for my own story concepts. Please do not solicit your own ideas.

Scootaloo, now an adult and married to Rumble, is a very small mare. She gets mistaken for an adolescent constantly, but she deals with it. Meanwhile, Rumble is a HUGE stallion, easily a head and a half taller than your average guy. They decide to start a family, but to their surprise, Scootaloo winds up pregnant with quadruplet colts! Realizing the pregnancy would be extremely hard on Scootaloo (even moreso given the last four kids were all big foals) her doctor advises her to seek out magical assistance. Starlight Glimmer concocts a spell to transform Scootaloo’s body to be able to adequately carry the pregnancy to term, and over the next few months, Scootaloo grows bigger and stronger, the process speeding up as the pregnancy progresses.

Little Mare, Big Family (Abridged Version)

Art by Cosmonaut

“Missus Scootaloo…” The doctor glanced up from her chart. “I have to be blunt. As your doctor, I’m certain your tiny body will have issues supporting your colt quadruplets.”

Scootaloo grit her teeth. She hung her head low, muttering a bitter curse. Just another thing her dwarfism was taking from her, laughing all the while.

“It’s not fair.”

The doctor sighed. “Life rarely is. I think it’s time to realistically look at your options, and see which one you want to choose. You really can’t afford to wait.”

Scootaloo flattened her ears. “I’m not going to termi—”

“No one’s saying you have to,” the doctor said. He bade her sit down, his voice calm and steady. “If you and your husband have already decided against that, there are other paths we can consider.”

Scootaloo plopped down in the chair, her expression neutral. “Such as?”

The doctor cleared his throat. “There have been other cases similar to yours. Er, multiple pregnancies where the mother was at high risk, I mean. The treatment plans have all involved magic in one form or another, but many have a high success rate. One in particular would be the best option for you, as I believe it would solve most all your potential problems.”

Scootaloo folded her hooves. “I’m listening.”

The doctor nodded. “I strongly recommend you have a very specific spell cast to grow your body accordingly so you can carry your foals. It’ll need to be cast by an S-Rank unicorn or higher, but as I understand you’re acquainted with Twilight Sparkle, either her or her pupil will suffice.”

“Hold on.” Scootaloo held up a hoof. “‘Grow my body accordingly?’ What’s that even mean?”

The doctor clicked his tongue. “In essence, a set threshold would be set on certain parameters of your body. This threshold would monitor your vitals, along with several of your body’s systems. Whenever one of them is taxed beyond the set threshold, the spell would activate, transfiguring your body to accommodate to the increased workload. For instance, when your skin starts to strain from your expanding womb, the elasticity of your dermal tissue will increase. When your musculoskeletal system is overly taxed by your increasing weight, your bone and muscle tissues will grow in density and mass. When your excretory system is taxed by your womb putting pressure on your bladder—”

“Okay, okay.” Scootaloo made a face. “I get the picture.”

The doctor made a few jottings on Scootaloo’s chart. “In the recorded cases this spell has been cast correctly, a 95% success rate has been recorded in the pregnancy progressing to term. After that, it’s just a matter of keeping up on your check-ups to monitor the integrity of the spell. That’s what’s caused the 5% failure rate, in case you were curious.”

Scootaloo’s spirits rose. “So you’re saying I have this spell cast on me, then just keep going to the doctor, and I’ll be fine?!”

The doctor chuckled. “More than fine, should you choose to have a Permanency spell cast afterward.”

“Heck, yeah!” Scootaloo shook the doctor’s hoof. “Thanks a ton, doc! I’ll do that!”

The doctor wrote out a few things on a scroll, then signed it and gave it to Scootaloo. “This is the name of the spell. I’m sure Princess Twilight or Starlight Glimmer will recognize it.”

Scootaloo snatched the scroll and sped out of the office in a speedy blur.

“You know what’s interesting about this spell?” Starlight Glimmer said from behind a spellbook. “It’s actually four separate incantations that are meshed together in an Starswirlian framework! It’s really quite fascinating!”

Scootaloo fidgeted as she fought to stay still. She was enveloped in the blue hue of Starlight’s magic, its energy creeping and crawling all over every nook and cranny of her body. “I-If you say so…”

Starlight looked up. “Something wrong?”

Scootaloo grit her teeth. “Kinda wish I’d said yes to your offer to freeze me in place while you do this—”

FLASH!

Scootaloo blinked. She tried lifting one of her hooves, but it didn’t budge.

“There you go!” Starlight said with a bright smile. “Better?”

Scootaloo muscled down her cringe. She forgot Starlight could be a little… overenthusiastic.

“I’m so glad you came to me for help!” Starlight returned to the book, double checking the instructions. “I didn’t even know that you were pregnant! How far along are you?”

Scootaloo sighed. “Eight weeks. Only just did the first arcanosound on Tuesday. Imagine Rumble’s and my surprise when we saw four soul signatures.”

“Ha! I’ll bet!” Starlight said. “Let’s see… manipulate the Dacrenzic array while melding the Reverse Talvnar field… transmit a negative eldritch sine burst and maintain it for at least four seconds… Pfft, easy-peasy.”

Scootaloo remained quiet while Starlight worked. Twilight would’ve been the preferred choice for this, but she and Spike were away in the Dragonlands for a few weeks. Starlight was the only choice to get this done without going up to Canterlot.

“Let’s see…. One more thing…” Starlight scanned the arcane tome. “If done correctly, the subject’s magic signature should be glowing white… check… now funnel ten thousand units of hornpower into the subject—TEN THOUSAND?! Holy hay and oats! No WONDER this spell needs a Talvnar field!”

Scootaloo wasn’t all that familiar with unicorn magic terms, but she did know numbers. Ten thousand was a big number. “Uhhh…”

“Whatever.” Starlight tossed the book aside, levelling her horn at Scootaloo. “Guess it explains why they only let an S-Class cast this. Sheesh, ten thousand…”

“Starlight?” Scootaloo said. “Should I be—”

“Shh!” Starlight froze Scootaloo’s mouth as well. “I need to concentrate.”

Scootaloo was helpless as Starlight’s horn began to hum… buzz… then whine. Light gathered around Starlight as she summoned forth more and more power, the rising energy making Scootaloo’s skin prickle. The light of the room dimmed, the pressure gathering more and more, to the point that it was almost painful in Scootaloo’s ears. She probably would’ve been yelling if she could talk, but effectively paralyzed, the only thing she could do was look on. Starlight now looked like a blazing effigy of power from all the magic gathered, and there was a split second of silence before—

VWUMMMMM

Magic erupted from Starlight’s horn in a shining ray. Scootaloo could only mentally scream as she was struck square in the chest, her body absorbing the energy and seeping into her cells. She imagined this was what being struck with lightning felt like, except here it was prolonged, lasting several seconds before the blast was fully spent.

Starlight panted for breath. She woozily raised her head and rubbed her smoking horn, looking Scootaloo over. “Greh… zeh… There, I think… that did it! Phew… how do you feel?”

Scootaloo didn’t reply.

Starlight blushed. “Whoops! Ah, heh-heh… sorry, I’ll uh... unfreeze you now…”

SLAM!

“I’m home, Rumble!” Scootaloo called.

There was some noise from further inside the house. A few seconds later, Rumble came in from the living room, expression pensive.

“How’d it go?” he asked.

Scootaloo fluttered up, giving him a quick kiss. “Way better than I expected! The doc recommended a spell to help the pregnancy, and Starlight Glimmer cast it!”

Rumble cocked his head. “So you’re going to be okay?”

“More than okay!” Scootaloo put her hooves on her belly. “Just you wait, Rumble. There’s gonna be some BIG changes coming...”

2 Months Later (4 Months Pregnant)

Scootaloo and Rumble pushed a shopping cart down a grocery store aisle. It was already filled to the brim, but Rumble wasn’t having trouble pushing it along. Understandable, considering his supersized frame was wider and longer than two of the things put together.

“Let’s see…” Scootaloo double checked her list, which was over a foot and a half long even after it’d been folded in half. “We still need anchovies, grapefruit, pineapple, hay bacon, oats, raisins, mayonnaise, kumquats, cherries, apples, milk, orange juice, decaf tea, pickles, peanut butter, jelly, grapes, bread, eggs, sugar, spices, tomatoes, celery, beets, radishes, avocados, sugarcubes, cereal, potatoes, cheese, mustard, ketchup… Yeah, we’re gonna need a fourth cart.”

Rumble snickered. “We’ve been able to fit it all in three til’ now. Guess that’s a new record.”

Scootaloo rolled her eyes. “Well, between you, Mister Bottomless Pit, and me being a growing mare…”

Rumble smiled. He put a sail-like wing around her, stroking her with his feathers. “I noticed you’re at my shoulder, now.”

Scootaloo had noticed, too. Where before she’d almost been able to walk under him without ducking, she now actually looked like an adult! She was growing like a weed, already even taller than your average mare! Of course, said growth had come at the cost of becoming a living vacuum, but sucking down food at a breakneck pace was an acceptable trade-off.

And besides, not all of it was going to her. Scootaloo’s pregnancy was starting to show, her formerly slim belly now filled out nicely. Her last check-up had shown the boys were nice and big, the spell working to keep them healthy as well.

“Just you wait, honey.” Scootaloo nuzzled him as they went to the front of the store where their other two filled carts waited. “I’m only getting started.”

2 Months Later (6 Months Pregnant)

“Thanks for the onesies, Rainbow Dash!” Scootaloo waved as the last guest from her foal shower flew off. She closed the door and walked back into her living room, cleaning up the remnants of wrapping paper.

There was the sound of a toilet flush. Rumble emerged from the bathroom, coming over to stand beside her.

“We got a good haul, didn’t we?” he said.

Scootaloo looked at the ginormous pile of gifts. All of it was in fours, all of it for colts. She soon was gonna be outnumbered by boys five to one.

“I know it makes the shopping easy, but I still wish one of them was a filly,” she said.

Rumble snickered. “Better luck next time, eh?”

Scootaloo nodded. She sat back on her haunches, feeling her now noticeably-pregnant belly. Heavy, wide and firm, it’d be dragging on the ground already if she was her old size. She could feel the little wiggles of her sons shifting now and again, lulled into slumber by the rhythmic beat of their mom’s heart.

“I gotta say, no single pregnancy’s ever gonna compare to this,” she said.

Rumble’s tone turned coy. “There’s always fertility spells…”

Scootaloo ignored that. “I’d say the best gift we got are those enchanted diapers Twilight got us. Those are gonna save us a ton of money.” She fiddled with her longer mane, blowing a lock out of her face. “Ugh, I need to cut my mane again…”

Rumble put a hoof around her, kissing the top of her head. “I kinda like you with a longer mane.”

Scootaloo leaned into him. “Yeah?”

“Yeah.” He rested a hoof on her stomach, stroking it idly. It still baffled him that Scootaloo was now tall enough to be able to full-on lean against his chest! Before, she could only do that with her head. “I still can’t believe how big you’re getting! I think you might now be about the same height as a stallion.”

Scootaloo smirked. She pulled his head down, kissing him with a sudden energy. He became putty in her hooves, her hunger infectious.

“I’m catching up to you, big boy,” she said after they broke. “What’cha think of that?”

Rumble’s face flushed, his mouth dry.. “...Catch up. Catch up, please.”

Scootaloo hummed. Her tail swished back and forth, entwining with his. “But maybe I don’t wanna catch up to you, hmm? Maybe I wanna SURPASS you. Maybe I wanna be able to call you Shorty.”

Rumble bit back a moan. He felt himself unsheathe, his dry, earthy scent tickling Scootaloo’s nose.

“And just think,” she purred. “Once these four are born, I’ll be better off to have more foals later. How many did we decide on, again? Seven, I think it was?”

“Screw seven.” Rumble’s voice dropped to a growl. “I wanna fill you up with so many foals, you could be twice my size and still have a baby belly grazing the ground.”

Scootaloo sucked in a breath like a hiss. The thought of having that many growing lives inside her…

It wasn’t long before they wound up in the bedroom.

2 Months Later (8 Months Pregnant)

“I’m home, Scoots!”

Silence greeted Rumble. He stood still, straining his ears for any sound. He’d just been gone for a week on business, and hadn’t really expected to come home to an empty house.

Then Scootaloo’s voice sounded from farther in.

“In here, babe~”

Was… Scootaloo was in the bedroom? Huh, strange, it wasn’t that late. Maybe she wasn’t feeling well? He trotted through their house, past the living room and down the hallway—

A blur of orange hit him in the side. Rumble let out a surprised squawk, suddenly pinned to the wall. He opened his eyes to realize he was staring into a pair of lusty violet eyes.

“Heya,” Scootaloo said.

Rumble went rigid. Scootaloo was eye level with him, face to face without any help at all! She was eyeing him like a piece of meat, her thick, violet mane spilled around her neck.

“Mmm…” Scootaloo licked him, tasting his neck in a long, slow swipe. “I missed you…”

Rumble found it hard to think with all his blood being re-routed. “S-Scoot?”

Scootaloo kissed him, hard, and forceful. Her tongue wrestled with his, cooing as she felt his hooves wrap around her. They made a game of it as they pushed back and forth, but Scootaloo got the better, taking lead.

They broke a while later, out of breath in the best way.

“Welcome back, hot stuff.” Scootaloo petted his chest. “Just so you know, I measured myself this morning, and I noticed that we’re now the same height! Wanna celebrate by fucking each other’s brains out?”

Rumble was at full mast in seconds. He kissed her again, his nostrils flaring with the musky scent of excited mare. They staggered to the bedroom, never breaking the kiss, smashing the door open. In smaller places they would’ve had to duck, but this house had specifically been built to accommodate Rumble’s (and now Scootaloo’s) giant size.

Rumble gave way to Scootaloo’s need. His hooves wandered to pregnant belly, full, round, and firm. She looked like she was overdue with twins! She moaned as he felt how big their four foals had grown, healthy and strong as her.

Scootaloo kissed him even harder, guiding his hooves to stroke her. She could smell his scent as well, mingling with hers and making her even wetter. They didn’t even get to the bed—she broke their kiss and whirled, flicking her damp tail in his face.

“Take me.”

Rumble’s eyes shrank to pinpricks, and in seconds he was properly mounting her for the first time ever. They both groaned, his virile cock shlicking inside her tight folds. Scootaloo’s paunch grazed the ground as her front legs bent, her rear ones locking in place, feeling oh-so-very right. She called out his name as her cunny swallowed his medial ring, the rest of his mammoth size still too much for her tight tunnel… for now.

Rumble held nothing back. He fucked her hard and fast, filling the room with wet thwap! Thwap! THWAP! Scootaloo wailed like a mare in heat, relishing the feel of his entire weight draped over her like a blanket. She revelled in his embrace while begging him for more, egging him on to go harder… DEEPER. Her gravid womb swayed in time his thrusts, a distant part of her noting that if she were still a shrimp, she wouldn’t even be able to walk anymore.

But not only could she walk... not only could she fly… she was getting bigger and stronger every single day.

Rumble couldn’t take it. Before long he was right on the edge, and Scootaloo’s walls clamped down on him, holding him in place. With a guttural cry he came, filling her fertile depths again with sticky seed. Scootaloo’s tongue lolled out her mouth, crooning as she felt his hot, wet heat, combined with the flutters of their children and his weight atop her.

He was soon was fucking her again, the beginnings of a very good night.

2 Months Later (10 Months Pregnant)

“Hey, Boss!” A pegasus stallion waved at Rumble. “Back already?”

Rumble waved back, a happy smile on his face. He whistled as he set to to work gathering the bigger, more stubborn clouds.

Another stallion came up beside the first. “Aw man, Rumble’s back? I thought we’d finally got rid of—I mean, I thought he got that big, fancy promotion! Does that mean we actually have to do work now?”

“Damn right, ya do!” Rumble rubbed his hooves together, gathering pegasus magic into his hooves. “Listen up! Cloudsdale wants me to manage Ponyville’s weather team until they find my replacement! Chip Cutter, go wrangle up the stray clouds on the Everfree border. Cloudsdale wants us to have a rainstorm tonight. Crackle Pop, go tell the newspaper! Rain starts at four p.m!”

The two stallions saluted, flying off in separate directions. Rumble set to work gathering more clouds, forming a mass in minutes that would’ve taken most pegasi an hour.

The morning passed, the weather team working hard to get ready for the storm. Rumble oversaw thing while also doing a lion’s share of the work, their progress going smoothly.

Eventually, the team broke for lunch.

“Aw, horseapples…” Rumble rummaged through his saddlebags for the third time. “Don’t tell me I forgot it. I coulda swore I packed it—”

“Oy, Boss!” Crackle Pop pointed to an orange dot flying up from below. “I think your lady’s coming up!”

Rumble looked over the cloud’s edge. Sure enough, Scootaloo was swiftly rising to their height, ascending in a lazy circle on a thermal. Her wide wings stretched out far to either side, her violet mane and tail waving like windsocks.

“Erm, I don’t think that’s Scoots,” Chip said. He’d gone to school with them, and knew her past. “She’s never really been able to—”

“It’s her.” Rumble closed his saddlebags, motioning Chip Cutter over. “You haven’t seen her in awhile, have you?”

Chip furrowed his brow. “Well, no but… how can that be her?”

Rumble laughed. “You’ll see.”

A moment later, Scootaloo was at their altitude. She exited the thermal and coasted over, landing easily on the cloud.

“Don’t mind me!” Scootaloo shrugged off her saddlebags, making a beeline for Rumble. “Just making a delivery.”

Several jaws dropped, Chip’s most of all.

“Holy shit…”

It was pretty common knowledge that Rumble’s wife was a runt of a mare. Further adding to it was that Rumble was the largest non-alicorn pony any of them had ever seen, so the size difference was even more extreme.

The mare that stood before them, though, was no runt.

“SCOOTALOO?!” Chip rubbed his eyes. “Is that you?!”

Scootaloo turned at the familiar voice. “Chip Cutter!” She waved at her old classmate. “Wow, I haven’t seen you since the wedding! How’re you liking the weather team?”

Chip stammered and spluttered. He associated that scratchy voice with a petite tomboy with wings like a hummingbird, not a massive maternal mare nearly twice his size! Her long mane and coat had a blooming sheen, her wings powerful and developed. The flight muscles in her back rippled and flexed, even moreso as she stretched out like a cat. And her burgeoning, swaying belly hung low between her legs, its wide, round shape jutting out well past her hips.

Scootaloo ruffled his mane as she passed. “Don’t keep your mouth open too long. You’ll attract flies.”

“Hey, hun!” Rumble came up to nuzzle her. “Sorry you had to come up here.”

Scootaloo rolled her eyes as she gave him his lunch. “I get to do something I’ve spent my whole life wishing I could do. You don’t need to apologize.”

Now the weather team was gawking even harder. This was Rumble’s wife?! The dwarf everyone talked about?! She was even TALLER than their huge-ass boss!

Scootaloo leaned down to whisper in Rumble’s ear. “When will you be home?”

Her sultry tone sent shivers down Rumble’s spine. “R-Rainstorm’s scheduled for four. Gotta stay ‘til then.”

Sneakily, Scootaloo’s hoof snuck up to squeeze his toned rump. “You should say you’re gonna have lunch with me so we can sneak in a quickie.”

Rumble nearly bit his lip so hard it bled. “There’ll be nothing quick about it...”

“Mmm, true… “ Scootaloo’s hoof inched lower, creeping closer to his balls. “I’ll be home waiting for you, then. Don’t keep me waiting, Shorty. I wanna rut your brains out again.”

Rumble couldn’t help but gaze longingly at the gentle sway of her hips, the pear-shaped orange mass swaying beneath them. She nipped his ear before spreading her wings and jumping off the cloud, gliding back to Ponyville.

“...Hey, Boss?” Chip asked.

Rumble swivelled his ears.

“Does Scoots have a sister, by chance?”

“A big sister, of sorts.” Although Rainbow Dash was now more the little sister these days. “Enjoy your lunch, fellas. I’ll be in my office...”

...to get rid of this damn boner. Fuck...

1 ½ Months Later (Full-Term)

“I’m glad you agreed to host the Summer Sun Celebration this year, Twilight,” said Princess Celestia. The two of them walked side by side down the streets of Ponyville, wearing their best Princess Smiles™. “I worried you might have trepidations after the last time Ponyville hosted.”

Twilight laughed, a hoof behind her head. “T-Trepidations? Me? Of course not! Why would I have anything like that?”

Celestia gave her a look.

A bead of sweat formed on Twilight’s brow. “...Mayyyyyyyybe I was a little nervous at first, but I got over it, honest! I just needed to remember what else happened besides Nightmare Moon returning.”

Celestia nodded. “Which was?”

Twilight looked over at a statue that’d been erected in the town square. Six mares stood on the points of a six-sided star, tall and proud as they watched over Ponyville.

A proper smile formed on Celestia’s lips. “You’ve all come such a long way.”

Twilight beamed. “We’re not the only ones. Ponies are getting married, starting careers, building whole new lives for themselves! It’s been amazing to watch fillies and colts I knew start families of their own.”

Celestia was about to reply, but then something caught her eye—two somethings, rather. The first was a male pegasus the size of a Saddle Arabian, standing head and shoulders above all the ponies around him. He’d just been given two jumbo-sized ice cream cones from one of the vendors. And the second something was the recipient of the second cone, an even bigger pony than him! She was an enormous,familiar-faced mare, standing a good two heads taller over him!

“Who…” Celestia squinted at the gigantic duo. She was positive she’d never encountered either of them—she would’ve remembered that! “Who are those two ponies?”

Twilight looked. “Hmm? Oh! Heh, speaking of starting families… Remember about fifteen years ago, I started something called ‘Twilight Time’? I think I told you about that...”

Celestia nodded. “You did.”

Twilight’s tone turned wistful. “That’s Scootaloo, one of my three little mischief makers. The stallion she’s with is her husband, Rumble. They’ll be welcoming their own little quartet of troublemakers any day now.”

Celestia’s eyes widened. She hadn’t seen from their angle, but now she saw that Scootaloo was IMMENSELY pregnant. Her swollen womb was the size of an overinflated medicine ball, so big that she could’ve been carrying a fully-grown stallion!

“C’mon! Let’s say hi!” Twilight led Celestia over. “I wanna introduce you.”

Dimly, Celestia let herself be navigated through the parting crowd. Ponies bowed as they passed, the typical murmurs and whispers of awe following in their wake.

“—hit the spot. Could definitely go for another—Twilight!” Scootaloo set down her ice cream cone. “And, uh… Princess Celestia! Also hi!”

Rumble swallowed his ice cream so fast he got a brain freeze. He dropped down into a bow, motioning for Scootaloo to do the same.

“Oh, knock it off.” Twilight fluttered up, giving Scootaloo a hug. “How’re you feeling? Still doing alright?”

Scootaloo flashed Twilight a smug grin. “Of course! What, you thought I’d start slowing down? Puh-leeze.”

Twilight laughed. “You’re right, I shouldn’t have assumed. You’ve got this all the way.”

Scootaloo stood up a little straighter. “Can you thank Starlight for casting that Permanency spell for me? I never got a chance.”

It was a rare thing for Celestia to be speechless. Then again, it was rare for her to encounter a pony several inches taller than her. Scootaloo was a veritable avatar of maternity, every inch of her brimming with vim and vigor. Her shiny coat, her solid legs and chest, her luxurious mane, her glowing face, her warm eyes. Her oversized barrel was stretched taut like a drum, her pregnant belly stretched down well below her knees.

“Let me introduce you to my old mentor.” Twilight gestured to Celestia. “You’ve heard of her, haven’t you?”

Scootaloo waggled her eyebrows. “Mmmm… nope! Can’t say I have. Nice to meet you, Twilight’s Mentor! Wow, your wings are so pretty!”

Celestia remembered herself. She looked up at Scootaloo (a welcome change), offering her hoof. “Nice to meet you, Scootaloo. And you, Rumble! Congratulations on your upcoming family—you’re going to have your hooves full.”

Scootaloo shook her hoof. “Don’t worry, we’ve got it covered. It might be a little crazy for awhile, but we’ll handle it.”

“We’ve uh, got a pretty extensive network to help us,” Rumble managed. “The hardest thing might be sorting through all the ponies who’ve volunteered.”

Scootaloo perked up. “Oh! Twilight, that reminds me. I’ve been meaning to ask you, do you know anything about fertility spells? We were thinking about looking into that in a few months.”

Twilight cocked her head. “Why?”

Scootaloo exchanged a look with Rumble, who simply shrugged. “Well… Rumble and I decided a long time ago that we want a big family. We’re in a really good place right now, and considering how well I handled this pregnancy, we figured there’s no harm in being… y’know, efficient.”

Twilight raised an eyebrow, but said nothing.

“We don’t really have anything holding us back.” Scootaloo gestured to herself, then her smooth, heavy paunch. “I got pregnant with these four by luck, but that’s not gonna happen again. The odds of it happening to begin with were nuts!”

Twilight’s mind whirred with calculations. “I… don’t think you even want to know what the odds of conceiving quadruplets twice in a row are. You’d have a better chance of lightning striking the same spot four times in a row.”

“Exactly,” Scootaloo said. “So if we wanna have more than one foal at time, we’re gonna need some help. We’re open to looking into multiple spells if there’s more than one, but from what I’ve read, a lot of them are really compatible with the one that’s permanently on me now. Does that sound about right?”

Twilight didn’t say anything right away. Instead she whispered something to Celestia, who wore a pensive expression.

“...Yes,” Celestia said slowly. “But, you’d need to pass a thorough examination before being allowed access. You’d need to demonstrate you two can support the amount of children you intend to have financially, emotionally, physically, and socially. I understand you want a big family, and you certainly have that right. But if you want magical assistance to conceive more than one child at a time…”

Scootaloo thought for a moment, sharing a few quiet words with Rumble. After some back and forth, they turned asone to Celestia.

“We’ll do it,” Scootaloo said.

“Just let us know what we have to do,” said Rumble.

Celestia summoned a quill and parchment, writing out some instructions. “You’ll be pleased to know that you should be able to do most of the testing here in Ponyville. Some of it, though, will need be done in Canterlot or Cloudsdale. Potentially, you could get it all done in as quickly as a month… but it could also take as long as a year.”

“Come and see me once you have all the appropriate recommendations,” said Twilight. “I can authorize the spell and arrange to have it cast on you.”

Scootaloo took the parchment with a huge smile. “Awesome! Thanks a lot!”

“But what exactly would the spell do?” Rumble asked. “How does it work?”

Celestia turned to him. “I’m afraid there’s no spell currently to guarantee a multiple pregnancy. The spells we have only increase your chances to various levels of potency. It’ll also depend on how well your genetic material responds to the magic.”

Twilight’s eyes flickered to Scootaloo’s heated waterbed of a womb, then to Rumble’s fat sheath and heavy nuts. “You... likely won’t need much. I bet a Level 2, mayyyyyybe a Level 3 Fecundity Ritual would be enough. I’m not sure how many you’re foals you’re looking to have at a time—”

Scootaloo waggled her eyebrows.

“—but I think that’ll get you good results.” A blush formed on Twilight’s face. “ALTHOUGH, that doesn’t mean I’m going to go easy on your paperwork! I’m going to make sure you two don’t overwhelm yourselves, okay? You both have foal fever bad. I think you should take a few months to see what it’s like with four before committing to more.”

Rumble scooched closer to Scootaloo. “We appreciate that, Twilight. You’re right, we might find that four is all we can handle, but for some reason… we don’t think that’ll be the case.”

Scootaloo smiled. “Call it a mother’s intuition.”

Twilight looked back up at Scootaloo. She looked so different now—from a small, scrawny athlete to a colossal feminine beauty. Her body had been reshaped into a maternal marvel, and she was thriving from it all, the excitement glinting in her eyes. Scootaloo had a new presence about her, too, a calm, serene air that put Twilight at ease, reminding her of her own mother...

“If you pass all the examinations,” Twilight said. “I’ll perform the spell on you myself. Deal?”

Scootaloo squee’d. “Deal!”

They talked a bit more for a few minutes before parting ways. Scootaloo and Rumble watched the closing ceremonies for the Summer Sun Celebration, then made their way back home.

“It may not be easy to pass all that testing,” Rumble said. “Princess Twilight can be a hardass when she wants to be.”

“I know.” Scootaloo put a ginormous orange wing around him, like a soft, feathery tarp. “But I also know we’ll get through it. Trust me, we’ll be on the fast track to the biggest family in Ponyville before we know it!”

A lopsided grin formed on Rumble’s face. “Maybe we’ll get lucky and you’ll get pregnant with even more than four, eh? Then the spell will make you even bigger.”

Scootaloo closed her eyes, her wingtip stroking his sheath. “We can only hope.”