Dash woke up feeling more than refreshed. It was a rare feeling, actually. Waking up feeling this good was something that she only felt after performing some serious arduous activity the day before, like a marathon or a heavy day at the gym. Such a good feeling, she hadn’t even opened her eyes yet, just being comfortably awake in her bed with Scootaloo.

Dash’s eyes shot open.

Scootaloo.

Last night…

Holy shit, did last night actually happen? All that sex. The indulgences they’d partook in...

Rainbow Dash looked around without getting up. There was no heavy weight on the mattress, so she knew Scootaloo wasn’t in bed with her. She’d talk about that with her later, right now she needed to empty her-

Dash gasped, feeling her breasts. They were soft! Like, incredibly, normally soft. Usually they were heavy and tight when she’d wake up in the morning but right now they felt completely pliable. There wasn’t any sloshing or tightness in her bosom at all. Rainbow sat up straight and played with her tits, jiggling them experimentally and cooing at the sensation. They were even the same size. But how...

“Having fun?” came a voice from somewhere above her. Dash wheeled around.

“Scootaloo! About last night I-“

Dash cut herself short, looking up at Scootaloo… up and up and up.

“Cat got your tongue?” Scootaloo grinned down at her. The bulky teenager was huge. Big was no longer applicable of a description. Amazonian seemed too small now. The sculpted bronze goddess standing before Rainbow Dash had to be more than eleven feet tall. No, bigger, since the top of Scootaloo’s head was just about grazing her twelve foot tall ceiling. Each of her thick, powerful legs had to be wider around than she was, and her oaken thighs twice that. Her bulging abs looked like stacked cinder-blocks chiseled into her midsection, and her massive, pendulous, perfect breasts stuck out proudly from her chest, the bottom swell of them just about reaching the top of her cut abs.

Rainbow Dash climbed out of bed in a daze, walking over to the teenager who was now more than twice her size.

Wha… wha… how?” Dash gaped, staring up at Scootaloo through the v-shaped space between her breasts.

“I dunno, maybe this is how I was always meant to be,” Scootaloo said softly, flexing her arm. A bicep the size of a small boulder popped up, a single blue vein running along the top.

Rainbow just looked at Scoot up and down in awe. Her eyes were level with the top of Scootaloo’s thighs. Tilting her head slightly upwards brought her face to meet Scootaloo’s pussy. It was wet and glistening, and could sure enough swallow her arm if she had tried to stick it in there.

In a speed belying her size, Scootaloo brought herself down to a squat. Rainbow took three steps back in surprise. A canyon of cleavage couldn’t distract Dash from the look in Scootaloo’s eyes. Little, small, scrawny Scootaloo, now the biggest, tallest, strongest woman in the land.

And in her light violet eyes Rainbow Dash still saw the same adoration in them that she’s always seen.

“I want you,” Scootaloo bit her lip. “Y’know, romantically like. I don’t really know how else to put something like that, Rainbow Dash, but you’ve always been there for me, not only to look up to but, love too… the person I’ve always wanted to have but never could.”

Scoot dropped forwards to her knees, causing the floor to tremble from the impact. Even like this Dash still had to look up to her.

“I know I’m kind of… huge, but maybe we can make this work? It’s not impossible, right? And I haven’t outgrown your house yet! Just everyone else’s!” Scootaloo reached forward and tenderly grabbed Dash’s palm. It looked so small in her huge hand. Rainbow felt her mouth go dry when she realized even Scootaloo’s pinkie finger was longer than her whole hand.

“Dash… say something,” Scootaloo pleaded, rubbing Dash’s hand with her thumb.

Rainbow bit her lip. Looking over this giant teenager down on her knees and affectionately asking her something she’d never thought she’d hear in her life, Dash curled her smaller hand around most of Scootaloo's index finger and the word she’d had buried in the back of her subconscious burst forth in a single joyous
“YES!”

Scootaloo immediately crushed her in a hug, the twin mega-mounds mashing her entire body. Dash wheezed, tapping on Scootaloo’s arm for release. Just as she caught her breath and was about to instruct her on treating her incredible strength better, Scootaloo pulled her in for a kiss.

“Ohmmm,” Dash reciprocated with some difficulty, now that she was so tiny compared to her partner kissing was a force to be reckoned with. The suction stole what little breath she had left away with each meeting of their lips, and Dash nearly choked when Scootaloo forced her tongue inside her mouth, her own tongue nearly pulled out of her mouth when Scoot sucked on it and kissed her back hard. Making out with a giantess was difficult, her mouth being so so much larger than hers.

When Scootaloo broke the kiss Dash was panting like she’d run a mile.

Wow,” Dash rotated her jaw. “You’ve got to be way gentler with me, Scoot. I don’t think there’s entire towns as strong as you are.”

“Sorry…,” giggled Scootaloo, her big hand resting on Dash’s shoulder, fingers running along the length of her back. “Can we just stay in here all day just… together?”

“Sure, Scootaloo,” Dash said, a sudden tenderness in her voice. “Together like…cuddling together?”

Dash inhaled sharply. Scootaloo’s fingers had snaked down her back and her index finger was curved around her ass, the tip of the digit resting on the entrance to her pussy.

“Actually…I was thinking we could do a little bit more together,” Scootaloo bent down and leaned into Dash ear and whispered. “If you thought my fingers could fill you up yesterday, just you wait.”

Scootaloo punctuated that last word by inserting just the tip of her finger inside of Dashs pussy, causing the smaller woman to squeak and go bowlegged for a moment.
DINGDONG

The doorbell chime rang through the house.

“Ah… Scoot,” Dash stiffened and gasped. Even the tip of her finger felt huge. “I’m gonna... get the dooOOR.”

Reluctantly, Scootaloo withdrew her finger. Dash fell back on her heels -had she really been on her toes just now?

“I’ll be right back.” Dash grabbed one of her bigger towels hanging off the bathroom door and walked down her hallway. She’ll just say she was heading into the shower and whoever was there would politely leave. Worked every time.

The doorbell chimed again as she approached. Dash breathed in and opened the door.

“Oh hey there, Sweetie Belle!”

The curvy girl looked down at Dash with an odd smirk. “Is this a bad time?”

“Nah,” Dash tightened the towel around her bust. “What’s up?”

Sweetie Belle adjusted her fashionable red purse hanging off her shoulder. Dash took a moment to look her over. She was dressed in a hot little burnt orange number that was no doubt designed for her sister (and her sister’s smaller bust) tight in all the right places. The hem of her t-shirt came down halfway to her soft midriff, and the jean shorts were hanging off her curvaceous hips and revealing the lacy thong she had on. Even wearing flats, Sweetie was still four inches taller than Dash, but after spending all summer with somebody continually growing and making her feel like a doll’s toy, it was refreshing talking to a person who was only a bit taller.

“Is Scoot awake? It’s past noon,” Sweetie asked, checking her phone.

Dash coughed. “Yeah, she’s up.....were you wantin’ to visit her?”

“She texted me last night and said to come over after lunch, but all her texts this morning have just been jumbled letters,” Sweetie unlocked her phone and showed Dash the recent messages. There were five lines of gibberish visible on the screen.

“Uh,” Dash tightened the towel around herself. “Y’know, come on in. I think you’ll figure it out when you get inside.”

Sweetie Belle stepped inside; Dash got a whiff of her fruity shampoo once she walked past.

“Where’s Scoot?” asked Sweetie, tucking her phone away. “She’s not in the shower too, is she?”

Dash almost laughed at the idea of the giant sized Scootaloo crouching in her shower stall. “I really don’t think so. This way.”

Sweetie quietly followed Dash down the hallway, her flats making quiet slap slap sounds against the floor. Rainbow wondered why Scootaloo was being so quiet. Perhaps she was intending to surprise Sweetie Belle with her huge, new body.

Dash walked into the room and stopped when she heard Sweetie gasp behind her.

Scootaloo had her huge, defined back to the bedroom door and was fiddling with something on the floor in front of her. The back of her massive tits flowed to her sides and wobbled beautifully. Scoot turned her head to look behind and spotted Sweetie Belle.

“You made it!” Scootaloo exclaimed loudly, standing up to her full height and approaching quickly.

“Scoot! What happened!?” Sweetie took a small step forward and craned her neck to look up at her towering friend. “How’d you get so.... huge?”

Scootaloo bent down and picked Sweetie up and lifted her high into the air with a small eep. Without another word Scoot embraced the demure girl with the same shockingly powerful kiss that Rainbow had received earlier. Both of Sweeties flats slipped off her feet and clattered to the floor.

Rainbow felt her neck getting sore staring up at the two making out. Removing her towel, Dash walked over to her damaged looking bed and flopped onto it -she was about to close her eyes when she caught an eyeful of orange whizzing past her. The make-out session up there had gotten more heated in the past minute; Scootaloo had peeled off Sweeties top and was fondling her perky tits, and looked to be in the process of pulling her shorts down. Rainbow was utterly transfixed at the site of this giantess ravaging the smaller girl. Watching Sweetie being manipulated and dominated so easily was getting her incredibly aroused. Rainbow bit her lip as she watched Scootaloo open her mouth wide and gently suck on Sweetie’s entire pert breast for a few seconds, then switching to the other with the same tenderness.

After a minute of this sexual attention, Scootaloo whispered something into Sweetie’s ear and set her down on the floor. Sweetie took a moment to fix her curly hair and set her bottle green eyes on Dash.

“Dash, I found your toys,” Scootaloo interjected, taking one huge step over to the small pile she’d been poking around a few minutes ago. “Can we use some?”

“Uh-huh,” Dash was distracted. Sweetie Belle was sauntering over to her in the most sexual way she’d ever seen. Rolling hips, slightly swinging shoulders, perky, perfect breasts capped with light pink nipples bouncing so, still glistening from their recent ministrations, and before she knew it that body was clambering into bed next to her.

“Uh, Sweetie Be-“ Dash was cut short when Sweetie kissed her gently on the lips. She was soft, warm, and her fluffy hair fell around Dash’s face like a plush curtain. Rainbow cupped one of her perky tits, sticky wet from the suckling they’d just had. It was impossible for Dash to not lose herself in the make-out session. When Sweetie began to tug and squeeze Dash’s nipples it coaxed a soft moan from her. This just felt so good. Unbelievably good. This girl just knew how to push her buttons. But it’s not like Dash was going to be outdone.

SLAP

Sweetie yelped, her plush round butt jiggling like jello where Dash had smacked her. The look on her face spurred her to do it again. Harder.

SLAP

Sweetie Belle moaned, low and sultry and sexy.

“Do it again,” she purred, her free hand grasping at her breast.

SLAP

Scootaloo looked over in mild amusement. After rifling through all of Rainbow Dash’s naughty toy collection her curiosity had been sufficiently sated. There were plugs and dildos, ball-gags and paddles and all sorts of weird, kinky stuff surrounding Scootaloo on the floor, like an X-rated pinata had burst open. Despite all that was going on around her, the oddest feeling was going on with her enormous breasts. Scootaloo caressed her bulging bosoms curiously: they didn’t feel as soft as usual. Right now they felt tight and kind of sore; like two water balloons filled up right to the bursting point. Even her nipples, as long and fat around as cola cans and sticking off her chest on puffy cone shaped areolas, were incredibly tender.

“AH! AHHHHH!”

Over on the bed Sweetie had gone rigid and was arching her back, her fluffy hair bouncing around her head wildly. Scootaloo loved how loud she could be when she came. It made her feel incredibly hot.

When Sweetie’s orgasm seemed to have subsided, Scootaloo hoisted herself to her feet and took two large steps over to the bed, looming over the much smaller girls laying side by side. They were both an incredibly sweaty mess. Sweetie Belle was still panting heavily and Rainbow looked up at her in complete awe. It was a look that Scootaloo had been relishing more and more as of late.

“I think you girls could help me out with a massage” Scootaloo lightly tapped her fat tits and winced at the slight ripple of pain. “So, do me a favor?”

With that, Scootaloo bent down and rested one massive mammary each on Sweetie and Dash’s torso. Each one had to be around sixty pounds and was almost as large as a beanbag chair.

“Whoa,” Dash wheezed under the crushing weight. She gave a concerned glance over to Sweetie Belle and found she was already happily fondling every available inch of Scootaloo’s left breast available to her. Seeing Sweetie at it so feverishly prompted Dash to start rubbing the warm, taut skin of Scootaloo’s huge breast. The previously subtle veins visible had darkened too.

Dash felt an odd familiarity to the breast she was caressing.

“You two have no idea how good that feels,” Scootaloo tilted her head back and sighed. “My boobs have been feeling weird all morning.”

“Weird how?” asked Dash, her hand curling around a fattened nipple. It was incredibly stiff in her grip.

Scootaloo moaned. “I dunno....just... weird.”

A sort of good weird now that there was so much gentle attention to her breasts. Every second more that they were being fondled just kept feeling better and better as the sensitivity in them climbed. There was pressure mounting just behind her nipples. In her desperation for release, Scootaloo placed her hands onto the sides of her massive tits and squeezed.

A thick stream of creamy white milk erupted from her nipples.

“Scootaloo!” Sweetie Belle coughed, her face blasted with milk. “What the heck is that!?”

“I dunno! I just felt really pent up or something and now I’m… lactating too?”

“What do you mean you too?” asked Sweetie, licking her lips. A smile came onto her lips and she moaned in approval. “Wow, that tastes really good.”

Dash whipped her head from side to side and stared at Scootaloo’s thick dark nipple. It was dribbling milk at a steady rate all over her own breasts and neck. This was bad. Like, really bad. She had to call somebody and ask for more information. She had to call Fluttershy.

“Scoot. Gotta use the bathroom for a minute. I’ll be right back,” she attempted to lift the massive tit off of her and failed.

“Sure.” Scootaloo hefted her breast and watched Dash unsteadily roll out of the bed. She grabbed her cell phone and entered the bathroom, shutting the door behind her.

Sweetie Belle was on cloud nine. Despite the initial confusion at Scootaloo suddenly lactating, she had already opened her mouth as wide as she could and began to suckle at the big fat nipple, gulping down as much warm delicious milk she possibly could. Skipping breakfast that morning proved to be a smart move.

“Keep going, that feels amaziiiing,” moaned Scootaloo, tugging at her other nipple and spraying a pint of milk against the headboard. She was beyond caring at this point. All that mattered to her was emptying her big breasts to relieve the pressure. Sweetie’s mouth felt so good. Unbelievably good. Scootaloo placed her hand around the back of Sweeties head and positioned her at a better angle.

After five minutes of drinking there was a noticeable roundness to Sweeties slim belly.

“Do the other one,” Scootaloo hefted her emptied breast off Sweetie and plopped her right breast in her lap. Just as eagerly before Sweetie latched on and began to drink. This liquid ambrosia was almost intoxicating, it tasted so good. Sweetie Belle’s eyes glazed over as she drank and drank. It was like drinking a warm milkshake made with the world’s tastiest dairy. She couldn’t get enough of it. Despite already feeling full she kept on going. Small sprays of milk were dribbling down her own chest. Streams of it were cresting over her face and dampening her hair. Her stomach sloshed beneath Scootaloo’s breast, heavy and swelling from the gallons of cream she was consuming.

The steady stream of milk finally began to diminish just as Sweetie felt like she was reaching her limit. Scootaloo unceremoniously pulled her breast away from Sweeties mouth with a loud pop. A gush of milk squirted from her nipple and drenched Sweetie’s face.

“Oops! I’m sorry Sweetie!” Scootaloo blushed, looking for a napkin.

“S’fne,” said Sweetie, scooping the liquid into her mouth. “Celestia, it’s delicious but if I had any more I think my belly would burst.” Sweetie emphasized this by lightly slapping her stomach. It was fat and round and jiggled like a plastic bag filled with pudding. “I need to sit down for a minute, though.”

Sweetie Belle awkwardly got to her feet and gingerly walked over to a nearby sofa chair, plopping down with a heavy contented sigh. Scootaloo couldn’t help but marvel at the size of her belly. It looked like she just gorged herself on a buffet... and it was all because of her.

“Ok, Scootaloo uh, listen up,” Dash exited the bathroom with her phone in hand. “I just got off the phone with Fluttershy and she says there’s been some kind of misunderstanding with me at the start of summer and-“

Rainbow Dash gasped upon seeing Sweetie Belle reclining in the chair with a very rotund belly.

“My boobs feel better,” Scootaloo said brightly, getting off the bed and drawing herself to her full height. “Sweetie helped me out.”

Sweetie did a half-hearted salute from the chair.

“Can you two stop doing things every few seconds!?

Scootaloo scoffed.

Dash walked over to Sweetie in a hurry. “How much of… that did you drink?”

“Most of it,” Sweetie burped, and giggled. “Why? What’s the big deal? It tasted really good!”

This prompted another huge groan from Dash. Heavy footfalls crept up from behind her.

“Hey Dash, what’s this thing?” Scootaloo bent down and opened her hand. She was holding what appeared to be a small strap-on, only where the dildo was supposed to be was what looked like a dark, hard, flaccid set of cock and balls.

“It’s a special strap-on I got from Zecora when she came back from her country,” Dash picked it up and fiddled with it. “Told her to get me the craziest souvenir ever and well, she sure did. Wanna see what it does?”

“You bet! C’mon, show us!”

The circumstance Dash was in had gotten far enough out of her control that in her mind there wasn’t any point in controlling the situation. There wasn’t a chance in Tartarus she was going to be able to force Scootaloo to do anything -the girl’s increase in size and strength had brought her force of will up along with it. Arguing with an oversexed giantess didn’t seem like a smart thing to do at all.

Carefully, Rainbow Dash slipped the bands around her waist and hooked the strap. Then, she placed the roundish front directly over her vagina. There was a sound like a whip crack accompanied by a faint sizzle. The strap on changed color to match her skin tone and began to change. The balls began to fatten and hang lower, and the shaft slowly plumped longer and thicker and harder.

A good ten seconds later and Dash had a nine inch long horsecock throbbing in her fingers.

“Whoa, that’s so gross!” exclaimed Scootaloo, reaching down to prod it. It was huge compared to Dash but her middle finger looked to be just as long and even thicker around. “So it’s real?”

“Realistic,” corrected Dash, shuddering greatly. “This thing kicks your libido into maximum overdrive. Seriously, it’s like,” Dash shuddered again, her cock twitching and spurting a dollop of pre-cum into Scootaloos palm. “It’s really hard to think about anything other than sex when it’s strapped on. It also doesn’t run out or get soft. Basically, it’s the ultimate sex toy.”

Scootaloo was busily swirling her thumb over the flattened fat tip. Pre was smearing all over the head and every second more was burbling up. It was sticky and very slick. Mesmerized by the bobbing tool, Scootaloo fell to her knees, opened her mouth and engulfed Dash’s new toy.

“OOooooh fuck. Yes please.” Dash was glad she didn’t have to ask. This toy just demanded attention on an instinctual level and if it didn’t receive it, it just burned all thoughts away until the only thing running through your head was the need to cum cum cum cum cum.

This was only her second blowjob, but it was already way more fun. It was bigger, thicker and juicier than Pipsqueak’s little pecker. She was gulping nearly a tablespoon of pre every second and the cock was thumping wildly against the roof of her mouth. There was a hardish ring of flesh near the base that Scootaloo just loved running her tongue against. It was warm and wet and amazing. Scootaloo removed her mouth with a lewd schlorp and sucked one of those fat juicy balls in her mouth to suck on. It was like having a big warm egg in her mouth, but not nearly as fun as sucking on the penis. After a couple more seconds of attention there she resumed lapping at that cock, tickling the flare with her tongue and giving it a strong kiss.

“FUCK!” Dash swore, grabbing the base with both hands. “I’m gonna cum! FUCK!”

Her cock throbbed powerfully, spewing the first few jets of cum from the tip all over Scootaloo’s open mouth, painting her big pink tongue with thick white streams. It was such an intense orgasm that a few shots landed on her upper lip and teeth. Six, seven, eight -the magically enchanted strap on just kept cumming. The tenth shot was the last, and Scootaloo’s mouth was filled halfway with jizz. Like a champ she licked her lips and swallowed the entire load in one big gulp.

“Wow… I can’t believe you just…” Dash breathed heavily, shaking her head. “Actually, I totally can believe you just swallowed all that,” she concluded, squeezing her shaft and watching a fat glob of fake magic jizz oozing from the tip. It was still completely rock hard.

“Yummy,” Scootaloo wiped off the wad of cum on her cheek and sucked it in her mouth. “My turn now.”

Sweetie Belle coughed. “Is that thing even going to fit around your waist, Scoot? You’ve got hips wider than most tree trunks.”

“It’s stretchy like a bungee cord,” Scootaloo spun Dash around and unhitched the strap-on with a deft flick of her fingers. “Does it hurt?”

“Nah,” Dash felt the rush of energy leave her body once the strap-on was cleaved from her waist. It deflated like a balloon and became small and hard. Scootaloo stood up straight and, with some minor difficulty, strapped it to her body.

“Whoa…” Scootaloo shut her eyes and almost stumbled. The rush of hormones was incredibly. It went straight to her head and buzzed through her body like lightning. There was a tingling in her crotch that was impossible to ignore. She had to look at it. Scootaloo forced her eyes open and looked down.

It was only on her for a couple of seconds and it had already surpassed its size when it was on Dash. It throbbed bigger, thicker and longer, an inch a second. A foot long and still soft! Scootaloo wrapped one hand around it just feeling it pulsing larger and forcing her hand wider. Her other hand was fondling her swelling balls. Each one was the size of a coconut and only swelling larger. At a sixteen inches it finally began to stiffen, pointing out straight before bobbing at an angle.

“Unnng,” Scootaloo moaned, her heart thumping madly in her chest. The cock continue to grow, breaking two feet long and still growing. A fat spurt of pre launched from the tip of her cock and splattered on the bathroom door across the room, her cock lengthening another three inches.

Dash was drooling. The fat balls dangling in front of her had swelled to the size of basketballs and were still growing in time with the cock. Another shudder and they were almost twice that size, churning with untold volumes of thick seed. Dash fell forwards and stuffed her nose against the tight sack, inhaling deeply the masculine musk wafting off those balls. She could almost hear the pent up cum sloshing around inside.

“Oh fuck… yesss,” Scootaloo grunted, her cock growing past three feet long. It had shoved itself between her huge, bountiful breasts and the flare was climbing towards her face. Scootaloo pressed her tits together, loving the sensation of the sex toy sliding through her tit-flesh.

Finally at over three and a half feet her cock stopped growing. Scootaloo let her arms go and just gawked at the tool she’d attached to her body. It bobbed in front of her face invitingly, drooling pre equal to Dash’s load all the way down her shaft like a stream. The flare had to be a good five inches wide and the base of her cock was thicker than Sweetie Belle’s thigh. And her balls… they were very nearly beach-ball sized, but heavier and loaded with cum.

“How do you feel, Scootaloo?” she dimly heard from one of them down below.

“Nnng,” Scootaloo bit her lip, unable to provide a response. Her cock spat out a quart of pre, dousing Rainbow Dash with the sticky clear liquid. Rainbow Dash. Scootaloo eyed the small woman with lust. She needed to fuck her. Fuck her right now with this big, massive throbbing cock she had.

“Yech,” Dash pulled a sticky glob of pre out of her hair when she was suddenly lifted high in the air, actually getting slightly dizzy from the sudden increase of altitude. “What the-“ Dash looked at Scoot like a deer in headlights. That look in her eyes. She had the same glazed over lust-drunk look that Pinkie said she had the first time they’d played with this toy. She felt the warm, sticky flare pressing against her pussy and crossed her legs.

“Uh, Scootaloo, I know you really need to get off right now but, uh, that rod of yours might literally split me in half so-“

Scootaloo slid Dash onto the head of her massive shaft.

“AGH!” gasped Dash. It was huge. So fucking huge it didn’t even fit. But it was slick and slimy with pre and when Dash twisted around at the first touch the head of that cock squeezed its way inside of Dash’s tight pussy.

“HHOOOOOLLLYYFUUUUCK!” Dash screamed, the fat head of that cock squeezing another couple of inches inside. She had thought that Scootaloo’s fingers had filled her pretty solidly before but this was a whole other world of full. It was like her lower body was being split in half. Dash spread her legs as wide as she possibly could to let that massive toy have easier access to her insides. Tears formed in her eyes. Her body heated up.

“Yesss,” Scootaloo moaned, forcing another inch of meat inside of Dash’s vice-like entrance. It was so tight, but so good. So impossibly good. She could feel an orgasm already building inside of her it was so fucking good. More and more pre pumped up through her shaft into Dash and right back out past her lips, providing just enough lubricant to keep sliding more inside. In order to keep getting more inside she had to twist Dash around, sinking inch after inch of cock inside until…

“AAAAAAAAAAAAAH!” Dash hollered at the top of her lungs. She could take no more. Fourteen inches of the thickest dick she’d ever taken bottomed out inside of her, spurting quarts of pre directly into her womb. She was cross-eyed, jabbering incoherently, completely speared by a cock that was almost as long as she was tall. Her feet rested on the hard medial ring and she gripped it with her toes. It was reflex: she felt unsteady and some distant part of her brain was warning about falling off from being suspended more than eleven feet off the ground.

Scootaloo groaned and gripped Dash tight around the middle. She felt her balls tighten and churn, the unique feeling of the realistic cock-head flaring deep inside. Her shaft visibly bulged, her orgasm traveling a foot per second before exploding inside of Dash.

“CUMMINGGG!” Scootaloo announced, her cock throbbing madly and unloading literal gallons of seed into Dash’s distended stomach.

The first pump of semen curved Dash’s belly outward and obscured the bulge of Scootaloo’s cock, the second doubled in size, the third pump of semen forced Dash’s belly so big that her breasts touched the top of her stomach. Dash screamed through her own orgasm and felt the pressure in her body subside; Scootaloo pulled her off and set her down, gallons of cum pouring from her pussy. Scootaloo dropped to her knees and groaned, her cock pointed directly at Dash and unloaded another volley of hot cum all over her, spraying in loads enough cum to fill a small swimming pool and she wasn’t even finished yet. By the twelfth and seemingly final burst of cum, Dash was completely drenched in sticky cum, both inside and out.

“Oh my god,” Scootaloo ran her fingers through her hair, biceps bulging and tensing. Her every muscle was flexing and felt used. Like she’d just finished an intense full body workout. “Oh my god!” she repeated, looking at the drenched form of Rainbow Dash. “Are you okay?”

“I’m good,” Dash’s voice cracked, wiping a gallon of hot seed off her face using her cum soaked arm. “Sore, but good… y’know, as good as somebody can feel after being used as a cock-sock.”

“Are you mad at me? I’m sorry!” Scootaloo bit her knuckle and winced.

“I’ll be fine,” Dash pulled herself back and rested her head on the side of her bed. “I shoulda warned you better about how crazy that thing makes you feel… if you had forced that thing any farther inside of me… well, whew, what a way to go huh?”

Scootaloo ran her hand down her cum soaked shaft, still throbbing and pulsing and leaking more fluid from the tip ready and raring to erupt again.

“My tuuuurn,” sang Sweetie Belle from her chair.

“What?!” Scootaloo stood up and wheeled around, her huge balls slapping wetly against her sweaty thighs. “Are you serious?”

Sweetie Belle folded her arms under her bosom, her soft belly jiggling a little. “There’s no way I am NOT going to get screwed by that giant piece of meat before the days over.”

Scootaloo licked her lips. It was hard to think straight still. The moment of clarity after her orgasm had already diminished and the foggy, horny feeling was already mounting once more. She really did want to fuck her too.

“Alright, let’s do this, but I’ll try not to be as rough.”

“Fine by me… but not too, too gentle,” Sweetie Belle winked up at Scootaloo, sauntering over to the bed. Dash got to her feet unsteadily and wandered over to the shower stall in the bathroom, fat globs of cum dripping off her body onto the floor. Sweetie rubbed her chin as Dash walked past. She knew that she had a few inches on her but now she looked shorter than usual…

Scootaloo groaned above her, rubbing her cock. It was impossible to not touch it. “So, how you wanna do this?”

“Hmm…” Sweetie Belle considered that. “You lay on the bed, and lower me down on top of it. But gentle. I don’t want you pulling me down onto your dick-“ Sweetie Belle rubbed the taut skin of Scootaloo’s huge sack “-unless I ask you to,” she finished with a sultry tone.

The bed creaked dangerously when Scootaloo laid down; a hulking titan, she was hundreds of pounds of muscle and this bed was only big enough to support her torso from the waist up. Scootaloo reached over and lifted Sweetie Belle up into the air and held her poised over the massive spire of flesh. Sweetie felt the blood rush to her head. This was it. She could feel herself dripping with excitement, patters of her juices dripping onto the fat head of Scootaloo’s flared cock.

“Okay… let me have it,” said Sweetie firmly, twisting her hips around and fitting in the head of that cock.

With an incredibly lewd squelch, Scootaloo let her drop.

“OOOHH!” Sweetie cried, spasming around and falling another inch down onto that bulging cock.

“Wow….nf, you’re taking in more than Dash did,” Scootaloo noted with a grunt. This was just as tight a fit as before, but with a bit more cock stuffed inside. More sensation to relish. Scootaloo loved the feeling of somebody squirming around this gigantic tool she had. Maybe she could get one of these from Zecora herself.

A shudder rippled through Sweetie’s body. There was an odd feeling running through her. Like electricity. She’s had an orgasm before but she couldn’t be cumming already. No, she could feel the tangs of pleasure mounting inside her, separately, distinct from this other feeling. When Sweetie went to feel the bulge in her belly from Scootaloo’s huge cock she gasped -her bloated belly was gone! She digested gallons of milk in minutes. The buzzing feeling in her body ebbed stronger and Sweetie squee'd, slipping another couple inches of cock inside of her. Even though she kept taking more and more dick she felt just as stuffed as before. It was getting too difficult to think. Sweetie clenched down and sighed, losing herself in the sensations.

Scootaloo closed her eyes, letting Sweetie fuck her massive tool at her own pace. It felt great, absolutely amazing. She had one hand on Sweeties hips and the other grasped around the base of her cock. Fluids dribbled down her dick and coated her fingers. There was nothing comparable to this. Absolutely nothing. The heat, the tightness, the way Sweetie crooned as she bounced on her massive dick.

“Oh fuck,” moaned Scootaloo, when Sweetie flexed her vaginal muscles and squeezed, drawing another hefty squirt of pre out of her cock. It felt so good. Her knees resting on her thighs. The way she squeezed her dick and twisted around right above the medial ring.

Scootaloo’s eyes shot open. Wait… wasn’t she only able to take in a quarter of the length before?

“I’m so close, so cloooose,” Sweetie Belle bit her lips.

“Whoa…” Scootaloo’s eyes were wide open. Sweetie Belle was growing! She had to be over seven feet tall already! Muscle tone covered her body in places where there were nothing before; biceps slowly bulged in her arms, her traps flexed and stayed hard, and there were lightly defined abdominals becoming more and more visible. Her breasts, which had been already big, were now ballooning past G-Cup, her previously dime sized nipples having fattened and lengthened on domed areola. It was an amazing sight to behold, watching Sweetie Belle expanding around her body, swelling larger and larger before her eyes-

“NGH! OH!” gasped Scootaloo. A particularly strong growth spurt pushed Sweetie past eight feet. With a juicy squelch the last couple of inches were of her cock were swallowed up by Sweeties expanding pussy. All three feet of her rod was now stuffed inside Sweetie’s broiling cunt. Scootaloo let out a long, powerful moan which turned into a growl. Her fat balls, filled to bursting with fresh gallons of seed, began to tense up. Scootaloo grabbed onto Sweetie’s expanding hips and thrust hard, holding there, her magically strapped on cock bulging visibly from the amount of cum rocketing up her shaft.

Sweetie felt her orgasm approaching rapidly. It was almost upon her.
“I’m cumming!”

Sweetie screamed through her orgasm, arching her back and quivering as gallons upon gallons of hot cum were jettisoned into her womb. Every jet of cum pumped into her triggered her growth and brought inch after inch of height and mass. Eight and a half feet, nine, nine and a half – she was rapidly growing in time to handle that massive shaft. The bed creaked in one final protest before the legs snapped and fell to the ground. Sweetie continued growing uninterrupted; she sped past ten feet and kept going with Scootaloo throbbing harder and harder at the sight of this new giantess growing before her until finally the endless glut of cum petered to a halt.

“Ahhh, yesssss… I totally needed that,” Sweetie raised her arms up above her head. The back of her hands bumped the ceiling with a loud thud. Sweetie blinked and looked her arms over in a haze, running her hands along the thickened muscle bulging under her fair skin.

“Wow… Scootaloo I’m… so big,” she crooned, running her fingers down her front, pausing a moment to fondle her huge, ripened breasts. Further down she could just about feel the bulge of Scootaloo’s cock beneath the firmed abdominal muscles of her belly.

Scootaloo just nodded, still basking in the aftermath of release. Her own hands traveled up to Sweeties thighs to give them a squeeze. She giggled when Sweetie flexed them, feeling the network of fresh muscle bulge in her grip.

“Can you stand up? I want to see how tall you are compared to me,” Scootaloo said, slapping Sweeties leg.

Sweetie made a light, affirmative noise and got up, the enormous cock stuffed in her cunt sliding out with a wet schlick. Gallons of cum gushed out of her pussy and into the ruined bed, sheets, and much of it ran down the insides of her thighs. Back to back, it seemed Sweetie was a full head shorter than Scootaloo now. This put her at about eleven feet tall give or take whether Scootaloo had grown herself, and it seemed like she had, since now she had to duck her head slightly to stand in the room. They compared each other’s musculature too. While Scootaloo nearly had the bulging, buff body of an Olympian, Sweetie Belle had the physique of a lightweight bodybuilder. Still, her lithe body rippled with muscle, and her biceps were proportionally bigger than watermelons.

Scootaloo unstrapped the bulging strap on and laughed at its immediate deflation. It was absolutely puny in the palm of her hand. Still very slick too.

“Okay, I’m all cleaned up. Now, about that-“

Rainbow Dash dropped the towel she was drying her hair with, and her jaw dropped with it. Now there were two teenage giantesses just barely fitting in her room.

“Oh sweet Celestia, how…” Dash walked up to them in shock, her head just about level with the tops of their thighs. They were both massive, tall, thick and strong in ways that weren’t humanly possible. Without warning Scootaloo hoisted her up in the air and stuffed Dash in between her massive tits. Sweetie Belle giggle and mashed her own breasts against Scootaloo’s, squishing the pint sized woman between 4 massive tits that weighed more than her combined.

Rainbow Dash never felt more helpless in her entire life, dangling in the air suspended only by cleavage. “You guys… I just don’t know what to do anymore…” she said, breathing out a long drawn sigh. “You’re both literally huge and it feels like it’s all my fault and-“

“C’mon, Dash,” interrupted Scootaloo with a laugh, her breasts quaking dangerously. “This is the best and most amazing thing to ever happen to me. To us!” she motioned to Sweetie who smiled broadly. “I probably can’t thank you enough! I’m amazing!”

Dash sighed again, just squished in between these massive mammaries and surrounded by pillowy warmth. There was literally nothing she could do about any of this.

“So I was thinking, Dash…” Scootaloo said, squeezing her tits together. “Since Sweetie is almost as big as me now, and that since she likes you too-“

“She does?!” Dash twisted her around and saw a hot blush on Sweetie’s cheeks. “I mean, it’s expected because of how awesome I am, but-“

“You always did have an amazing body, just because mine is a lot more amazing now doesn’t mean I don’t think you’re any less attractive looking,” Sweetie bit her lip, admiring Dash’s strong back muscles.

Scootaloo cleared her throat. “Anyway, I was feeling, maybe we could all be a thing together. Sexually. Romantically. Whateverly.”

“Would you be cool with that?” pressed Scootaloo.

Rainbow Dash looked up into the deep violet eyes boring into her own. A part of her wanted to say no. Say no to all this craziness and incredulous growth and mind-blowing sex and yet… in those eyes wasn’t wanton sexual desire. They were the same hopeful adoring eyes she’d been looking at all her life, and they were pleading for an answer.

Dash gulped. She couldn’t say no to them. Even through all the changes and weirdness, Scootaloo loved her, and Dash loved her too.

“I’m cool with it,” Dash just about whispered.

Author's Note

And so concludes Scootaloo Springs Up. A fic years in the making. Initially, the chapter just prior was to be the end of the story, and indeed, it does wrap up with some finality, this chapter is a continuation like a big large bonus, with a bunch of stuff thrown in there extra. I hope you enjoyed the whole story! There isn't a dearth of slow growth amazonian growth fics out there, and I've looked. Hopefully this story as a whole satisfies others like myself who yearn for more of that content.