Author's Note

A very fun collaboration with Phurie. There's at least three chapters of this planned.

Trixie's New Occupation Grows On Her

Trixie sashayed her way around Twilight Sparkle’s living room, her booty-shaking, pop-song humming gyrations barely audible over the great roar of the vacuum cleaner clutched in her hands. With genuine enjoyment beaming on her face, Trixie turned the machine’s nozzle on one of the many book-shelves lining the walls, and left the tomes without a speck of dust on the jackets.

Continuing to wiggle her way around her ex-rival’s expansive treehouse home, Trixie came to the great mirror that dominated one of its many walls. In doing so, she caught a brief glimpse of her reflection. And that definitely made her stop and stare.

Trixie had been mincing like a strumpet, strutting along in shiny, red high-heels like an experienced streetwalker. In hindsight she knew it was exactly because of this damnable French maid outfit stretched across her curves, and the way it made her feel like Ponyville’s newest, trashiest little cock-puppet.

In recent days, Twilight's esoteric experiments had grown more grandiose than ever, stressing the disciplines of both magic and science to their limits. Which was all well and good in itself. It was no concern of Trixie’s as to what the princess did in her spare time... not until Twilight had formally requested the magician’s services in the pursuit of discovery. Trixie had accepted eagerly, imagining two pioneers working side-by-side to make bold new discoveries... when in fact it was much more like one pioneer. One pioneer, and a cock-ornament to be inflated alongside her ego. Why had this happened?

It seemed like such a slippery slope now. Thinking back, Trixie recalled the playful suggestions of even more revealing “research uniforms”, the indenturing of Trixie into more and more little responsibilities around the home... And more requests for “stress relief”, of course! Twilight seemed to have no end of praise for Trixie’s talents in that area.

Was Twilight doing it to rub her superior magical prowess in Trixie's face, and sometimes her boiling-hot pussy? It was more than possible, especially in light of the scandalous outfit currently form-fitting the magical Trixie’s splendid curves.

Even without that newly-acquired floor-dragging (!!!!) member of Twilight's, the power dynamic in their relationship seemed quite clear. Under Sparkle’s employ, Trixie was forced to cram her Great and Powerfully Busty body into a midnight-blue dress that left nothing to the imagination. Her truly splendid curves were framed more like fresh meat meant for arousing a certain wide-hipped, long-haired pony-stud than the soft and nicely-plumped figure she’d nurtured so carefully. To think the ideal carriage she’d cultivated for the purpose of shuttling about one of Equestria's greatest minds was being used as masturbation fuel for that arrogant inventor’s juvenile cumflation fantasies! How humiliating!

Her maid's garments, a cock-teasing little number better suited to girls half her age, were as brief as a dream. The short sleeves were puffed up with extreme shoulder-pads, and the skirt was of mid-thigh brevity. Lots of hot Trixieness should have been on display, yet only a few inches of sky-blue flesh were exposed before tight black gloves and boots seized her chub and pinched it in tight. A frilly collar around her swanlike neck and a fluffy bonnet in her mystical tresses rounded the outfit out... as well as Trixie's incredible curves, top and bottom, in accordance with the accursed Sparkle’s unseemly sex fantasies.

The outfit even came with an over-indulgent titty-window that absolutely did not serve any practical function at all... save the obvious one of keeping her watermelon-wobblers bouncing and heaving all over when they should have been restrained to gentle, ladylike jiggling. And wasn't that hare-brained purple pony supposed to be working on a cure for her big swingin' battering ram, before she cock-shocked every last pony in Ponyville? That certainly wouldn't be possible when every glance at Trixie's colossal chest made all the blood rush down to that flared monstrosity. So stupid!

Trixie paused to sweep a feather-duster over one of Twilight’s many rows of books. She studied the shelf closely, then touched a fingertip to its surface. Draw it close in and... despite herself, Trixie let out a little “Squee!” of delight when the slender digit came back to her spotless. Of course it had! She had done an impeccable job! Feather-dusting was effortless for the Grrrrrrrrreat and Powerful Trixie!

“Yes! Take that, messy mess! Hahaha!” The busty enchantress threw her head back and laughed. Trixie’s abundant bosom was more than plump enough to come bouncing out, her outfit losing its grip on her for just a moment. Each titty, just as sizeable and as nutritious as Equestria’s finest melons, swayed so much her chalk-white nipples came spilling out for just a cheeky moment. “Challenge Trixie to clean your home, and you will face the consequences, Twilight Sparkle! Ho ho ho!”

Then Trixie faltered as she remembered the real problem.

No, it wasn’t the dust. The real problem was that no matter how much seed Twilight shot out, it didn’t abate the tidal wave of her loads one bit! Even after a marathon masturbation session, it could take as little as a hour or two for her burdened sack to swell with a healthy gallon of cum, then more and more with passing minute. Twilight had become a factory for the white goo.

Trixie shuddered involuntarily as memories of knee-deep spunk, overflowing toilets, and mountains of wadded tissues that stank like a fishery rose to mind. Not to mention the occasion she’d opened the door to Twilight’s chambers without knocking and had stumbled on the healthy young mare in the middle of one of her drawn-out, meat-pounding jack-off sessions. Trixie had been cum-shot across the corridor, ending up webbed to the wall by interwoven strands of wrist-thick spunk.

The bluenicorn turned her gaze to the lounge. She wondered if Twilight had developed that cure yet... or if her unending orgasms had created a new mess for Trixie to wipe up yet.

Trixie wiggled her way down the hall to Twilight's study, kicking those exaggeratedly curvy, fertility-goddess hips from side to side with each step of her towering black high-heels. The unconscious flourishes - sexy skirt swishes she didn't even realize she was making - left absolutely everything on display, her sex bomb body completely exposed to any wandering eyes. As much as Trixie would love to blame the brief uniform for baring her hips and behind with each step, she was finding it harder to focus on such thoughts the closer she got to Twilight’s study... Reminiscing about the Trixie-stretching pole waiting inside pushed out all other coherent thoughts.

She knocked three times at the door of Twilight's study, didn't wait for a reply, and barged her way in on the bossy brainiac. That's what you get for bullying Trixie!

Naturally, Twilight was there as usual, but her head wasn't buried in the books this time. Her hands were wrapped around the legendary meat rod, stroking a cock that was rumored to be the biggest in the country, jutting out in front of her like a third leg. Her delicate hands squeezed and tugged the shaft rapidly, drawing happy mewling from the perverted Twilight.

"Oh, Trixie! I wasn't expecting you." If Twilight was surprised, she kept it completely off her face: what she did show was a smug little smirk that was a hint of things to come. Her strokes on that massive meatstick slowed to a long, teasing pistoning, to keep herself aroused and proudly on display. "Here to clean up the mess?"

The “mess” in question was railing on Trixie’s senses, most of all in the form of a thick, overwhelming scent of Twilight's musk. Cum was dripping from every conceivable surface. Truly a good little maid's worst nightmare.

Trixie would have loved to have played the situation cool and calm. In situations like this, where she was backed into a corner and the pressure was mounting, that's where a bossy primadonna's resolve counted the most. But Twilight definitely had a way of making it hard on her, didn't she? As the heavenly Princess Scepter rose up between their blue and purple forms, Trixie found herself once again rendered helpless to do anything but study that flared flesh.

After all, when it came to insatiable power-hounds in Equestria, few matched the Great and Powerful Trixie for her bloodhound-like capacity to seek out the strong, the dominating, the... the immense! Yes, immense was definitely the word for that veiny slab of Twidick twitching in the cool air between them.

In fact, the intimidating bulk of pony-flesh dangling between Twilight's thighs was like a pure personification of that very power! It dominated mares and stallions alike as effectively as any royal decree. When the dangling cum-factories lurking under Twilight's member released, they blasted gushes of pearly white goop with enough force to make even the most over-endowed stallion's jaws drop. Just another form of the pony's opulent, overwhelming power, and another reason for Trixie's knees to knock together in bliss!

Even the tremendously-thick veins mapping the shaft deserved their own mention! If anything, they seemed almost too large for their task, pumping altogether too much blood to something so wasteful. Trixie's mind wandered to thoughts of how those thick veins endlessly pumped the vital fluids that kept keeping that wild beast alive and kicking, so many decadent offerings from Twilight's body to something so selfish, so unnecessary. Not only was Twilight the brightest and best of ponies, but she also had so much vitality to spare she could pour everything left over into a living flesh-monument to her own greatness.

Trixie coughed, kicking her hip out with an unhappy little sigh. She raised a feather duster in her blue-hued hand, twirling the tip in moody little circles in the air. "I don't suppose you decided to follow Trixie's suggestion of doing that outside then, mmm?"

"I’m much too busy a mare for that, Trixie, and you know it. I have countless theses to finish, notes to tidy up and research papers to review.”

Twilight shook her rigid pole, making those immense nuts slap together with so much force Trixie jumped on the spot. She continued lecturing the victim of her excess. “It’s sooo much more efficient to wring it all out right here in my study, allowing me to devote the optimal time and effort towards my research! And when the, ah, soaking does get out of hand, I have a slave on hand to clean it all up! It’s perfect!”

"Slave!" Trixie didn't like the sound of that one bit!

Twilight closed the distance between the two ponies, her balls sloshing and swaying as she pushed them forward with her walk, her mighty member bouncing and thwacking Trixie smack in her deep cleavage. "Actually, I've thought of a way to make you more effective at cleaning my messes. You see, instead of flooding a room with my, ahem, fluids, I was thinking that -you- would make a perfect container for them! Storage, cleanup, and disposal, all in one!" she giggled spitefully.

"Now just one minute, Twilight!" gasped Trixie. The curvaceous unicorn ducked her head, glancing backwards for any escape route at all. And not just because Twilight's wobbling dick was waggling between them as she approached... she also had to do Twilight's dishes, get the entire study spick and span... She had big plans today for getting the entire house simply sparkling~

"Trixie will have you know she is not a slave! May I remind you I'm here in the capacity of a highly-skilled magical practitioner in service of the crown, so - gnnph!"

The burgeoning head of that humongous member had struck Trixie across her heaving bosom, then wobbled its way up against her throat, blasted her face with a few staccato shots of cum, and then seated its head directly against her soft blue mouth. Both ponies were still standing, of course. A true testament to Twilight's size and length!

After Twilight's drooling shaft had been out in the cold for so long, hopping her shaft down Trixie's throat seemed long overdue. Why masturbate at all when there were so many lovely cockwarmers just walking the streets of Ponyville? Trixie most of all!

"Highly skilled magical practitioner, hm? I do recall that you can do some cute little stage tricks, but you're going to have to earn a title like that." Twilight's throbbing purple cock, drenched in precum self-lube staggered between the two at the peak of it's throbs, giving Trixie's knockers a timely whack every second or two.

"I think any slave of mine," she said, emphasizing Trixie's position, "ought to be better than the average mare off the street. Perhaps having a little more, ahem, 'appeal'?" She intently smacked her cock between her servant's breasts.

Trixie was reeling under the force of those thudding cock-blows.

Each perverted-sounding "smeck-a-smeck" of flesh on flesh made those huge jubblies jostle, springing away from the towering impacting rod, then impotently wobbling under the oppressive surface. No matter how forceful the impact, her boobies always came back for more, nipples growing stiffer and more firm as her chest rubbed away at the underside of Twilight's shaft. Her bust kept on massaging Twilight Sparkle to even greater strengths and sizes.

It was a nice metaphor for their entire relationship, really!

There wasn't any pain associated with those smacks and whacks about the melons; where they impacted the bluenicorn most of all was in the deep-seated feminine core between her legs.

Her eyelashes fluttered, pupils becoming hazy and unfocused, a steady flow of drool dripping into her chest as if eager to slicken it up for Mistress. Even while "I am not a slave!" came out of her mouth, it was being shouted down by her sleazy "fuck-me" body, wrapped up in the fetishistic garb of a cock-pounding slut-mare. "Ohhhh~! Twilight, wait! Trixie still must attend to... Oooh... You'll break me again!" she whined, even as a waterfall of arousal began to issue from her soaked-through lowleg thong panties. Clear signs Trixie loved this treatment were oozing down her stocking-clad legs.

"Your number one priority is serving me, so you'll just have to reschedule the rest of your duties. Now..." The purple alicorn in charge brought her hands back to her hips and let her immense rod of cockflesh rest between Trixie's already ample breasts. "You’re good at shows, Trixie. Why not put one on for your mistress? Show me some of your world-famous transformation spells... and how much of a bimbo you can be!"

"The Great Trixie transforming herself into a curvaceous toy for your amusement? Such a misuse of her magic is..."

As much as the magician would have liked to formulate more protests, Twilight chose that moment to waggle the flare of her royal rod a scootch closer, bringing her urethral opening right up against Trixie's nostrils.

And just like a magic trick of its own, the tricky gal went weak at the knees, her hands rising to clutch at Twilight's dress. Under Twilight's gaze - the purple pony’s mischievously bright eyes shining out from under her curtained mane - Trixie's senses were overwhelmed. All her thoughts of resistance left her brain, flushed away by the wafting aroma of Twilight's overwhelming cock.

In Trixie’s mind, there was only time... for Twilight Time.

Trixie's head hung for a moment, hands fighting for purchase on Twilight's shoulders. She trembled, then raised her head slightly. When she spoke, her voice was ragged and full of lust: "W-Well... Trixie supposes she can entertain your perversion with a few minor parlor tricks, yes~"

Trixie stepped back, centred her body, then ignited the fires of magic in her horn, a blue glow flooding the room. "Just this once, hmph!"

Trixie's maid outfit had already been a tight fit on her figure, but it was soon straining even more as the her breasts began to grow larger from her unicorn power. Her lacy, flared skirt didn't struggle as much to lift above her growing hips and rump.

Twilight let out an interested "Ooh!" as she watched her slave transform herself into the fucktoy she was meant to be.

The nerve of Twilight! Unbelievable! Trixie already had one of the softest, fleshiest forms in all of Equestria: abundantly blessed with a meaty, twerkable behind, splendidly thick thighs and a visually-nourishing rack that simply didn't match her slender form and narrow shoulders at all. It was a perfect body for a girl like her, cute and fun and compact, yet easily oversexed enough to make the stallions line up to obey.

That was one of Trixie's last cogent thoughts as her curves continued to glow with magic, expanding so very much and tossing away any semblance of demure decor for a buffet of meaty flesh ripped straight from a colt's fantasies! She stumbled backwards as her ass thrust out, turning from two cute cheeks into a shelf of juicy buttflesh, lifting her skirt so far in the back one could see up to the waistband of her slutty light thong. Flawless blue meat packed on top of itself, ass easing further over the tops of her thighs, swallowing them in her curves. Trixie's hips bulged outwards at the same time as her belly shrank, transforming the pony's body into an exaggerated hourglass!

Trixie’s jaw-dropping bosom grew out the most, each fleshy teat wobbling up before Twilight's eyes, inviting even more slapping and spanking and frotting on! Her little maid dress somehow stayed on in spite of all reason, the fabric looking so overstressed it might burst in a heartbeat. Trixie didn't simply grow out, either! That would have been more than enough on its own, yet she grew up as well, gaining a foot of height on little Twilight!

Under normal circumstances Trixie would have been delighted to grow before her peer's eyes... yet a nagging voice in the back of her mind told her that for all her extra weight and size, the power balance hadn’t shifted one bit! On the contrary, she’d allowed herself to be turned into a submissive Amazon slavegirl, some sort of perverse teddy-bear for the smaller Twilight to delight in snuggling up with. Now Trixie was even more of a plaything for the hooting, cheering Princess; she hadn’t transformed into a powerful and fearsome giantess, she was just a second soft and cuddly bed for her Alicorn mistress!

This was too much! Trixie knew all too well how pony bodies responded to growth magic. Either of these sorceresses could have written a thesis on the subject of how their slutty pony frames hungrily gobbled up growth magic and seemed prepped and ready to flourish into fertility goddess curves at a moment's notice... But she'd accommodated for that! She'd made sure to use the absolute minimum amount of magic, so this...

But that had only been at first, hadn't it? She'd started out using a safe and sensible trickle, but growing before Twilight, becoming a fleshy, thick-lipped bimbo with a spectacular mane that spilled around her shoulders, transforming from serious magician into curvy fuckdoll... Well, it had its own merits, didn't it? She held the futanari pony's full attention now, and smugly revelled in the attention! Trixie recovered admirably, doing a teasing little twirl for her mistress.

"Well, how is that Twilight Spunkle?" Trixie leaned forwards, bringing her eyes level with the tremendous head of Twilight's member. She might actually be able to comfortably fit it inside her new body. "This little filly looks more than happy to see me, doesn't she?"

The mistress in charge was actually impressed with her maid's transformation. She had grown more than expected, and Twilight's member reacted by needily oozing precum.

"Sweet Celestia, you've become quite the bimbo slut haven't you? You really went all out trying to impress your mistress." Twilight pushed her fat member into her ex-rival-now-slave's face at her approach. She swayed her hips, sending those sloshing nuts bouncing. "Well, I'll let you decide on how you wish to serve me. I've got a lot to deal with, so I hope you're up to the challenge."

Trixie’s mind was doing quite the effort of rationalizing all of this, especially now its workings had been slowed to a crawl. Twilight was absolutely correct, after all. It would be more efficient and easy to clean up all Twilight’s cum if it sloshed energetically own to the pit of Trixie’s belly. That did make sense.

It just went to show that being in the right headspace could go a long way. Trixie might have responded poorly to Twilight's bullying, but the awe in Twilight's voice, even if it was directed at just how much of a cock-sleeve Trixie had become, was like a powerful drug to that horny little unicorn. One she wanted more of.

Trixie arched her back, pushing long blue fingers through her shiny white mane. Her eyes shone with pride as she dropped to her knees with an earth-shaking thud, with enough force behind it to scatter the documents on Twilight's work desk. "Why yes, Twilight, I am quite exceptionally built, aren't I? I meant to only make a few minor changes here and there, but Trixie's magic must simply be too powerful..."

Trixie wrapped a gloved hand around that steely member, marvelling at the sheer heat pouring of Twilight's rigid shaft. "Yes, Trixie is responsible for this hard shaft, and Twilight's dangling nuts being so stuffed with cum! Hahaha! And now you'll be handing over every last drop to my magnificent mouth!"

Trixie's long pink tongue lolled out from within the curtains of her thick white mane, copious drool oozing from the tip and dripping on Twilight's rod. Her saliva sizzled on contact with the boiling cock, turned to steam by its extreme heat output. Trixie purred in the back of her throat and dipped her head, slapping her tongue firmly against the head and its underside. The cock sat poised at the entrance to her drooling mouth, her gullet more open and receptive than ever before. It looked good!

"Oh my! You seem quite eager to please! And what a perfect position for you, on your knees begging to suck my dick!" Twilight gripped her enormous flesh rod in one hand and the back of Trixie's head in the other, aligning herself before thrusting forward into her slave's warm mouth.

The Alicorn let out a moan as her massively thick cock crammed itself between Trixie's stretched lips. Leaning forward to get a good grip on Trixie's head at the end of her immense length, she gripped her slave like a mere object, jerking it towards herself for her own pleasure, several inches ramming into the throat of her maid's throat. She rammed again and again against the resistance, shoving more and more down the throat of the weak and powerless Trixie.

Trixie smiled up at Twilight, the immense purple-fleshed rod sticking out of her blue mouth like the planted flag of a conquering nation. Even her mouth turning up around it felt good to the horny Alicorn~

"But of course, Twilight! Even at something like fucking out all your gooey, thick cum, Trixie will not allow herself to be outdone! Now, prepare to be amazed as the Great and Powerful Trixie uses her sensational new body to drain these big nuts dry!"

Not waiting for Twilight's response, Trixie planted her upper lip against the leaky head of that fat cock. She slipped her greedy tongue out, drawing the tip many inches down the steamy rod... and then cradling the head inside her mouth. She began deftly swirling her tongue, leaving Twilight’s cock soaked in fem-drool.

"What do you think of that, mm?" Trixie burbled. Just speaking was enough to make the spunk rolling down her tongue form a lewd, thick bubble that popped messily across her cheeks. "Tireless Trixie will not rest until every last inch of your rebellious pole has been seduced, and subdued, with a healthy coating of saliva!"

Trixie sealed her mouth right around the side of the shaft, applying enough suction to the member to make the semen rise in even the most shy of stallions... let alone a hung alpha like Twilight! Trixie was truly playing with fire... Coaxing Twilight to fire even more seed from her pendulous seed-pods would be like diverting the course of a river into Trixie's belly: an experience not for the faint-hearted! "Now cum! Cum and be amazed at our bottomless stomach capacity!"

Trixie teasingly rubbed her smooth, flat belly, arrogantly boasting of her ability to hold cum... and daring Twilight to fill her to the brim.

This was a challenge Twilight was eager to accept. Her balls smacked against Trixie as she thrust into her, sloshing ominously fuller than her slave maid could have expected. Twilight had been edging for a while in anticipation of this very moment.

Inches and inches of thick, hot mare-meat rammed down Trixie's throat before finally reaching their destination. Twilight was thankful her length had pushed directly into Trixie's stomach, since the initial blast of cum exploded from the head of her cock with all the force of a gushing waterfall. Trixie's stomach instantly swelled to the size of a beach ball with the first gush alone, her outfit strained and beginning to rip. The second gush finished the midriff of Trixie's outfit, her cum-bloated belly bursting through the flimsy fabric with a loud riiiip.

Trixie's eyes shot wide open as she began to expand. Volleys of cum, each as incredibly thick as the ones before them, fired off in rapid succession, striking the inside of Trixie's gut with all of the force of one of Twilight's most powerful magical blasts behind them. Each time the blue beauty's body jerked, ragdoll-like, this way and that, that smirking tease standing over her just got another wicked glimmer of light behind her eyes... Twilight was taking an unmeasured sadistic glee in watching Trixie's belly getting bullied by cum!

Once Trixie began to grow, expanding only a little at first, she began to realize her error in challenging Twilight. As her belly began turning into Ponyville's newest cum-swimming pool, she knew just how badly she’d messed up!

"Wait, wait, wait!" Trixie thought. She couldn't even verbalize her concerns anymore, not with her mouth sealed around the very base of Twilight's member, her snout buried in the stud-mare's smooth, fragrant-smelling tummy. She struggled weakly, flailed her arms a little bit, then gripped Twi's ass and tried to ride it out!

The Alicorn shoved her length back and forth into Trixie's mouth as she orgasmed, moaning loudly while gripping her slave by her hair. "Nnngh, Trixie! I don't think you know quite what you're up against!"

With an unearthly series of creaks and sloshes, the maidenly mare on the end of Twilight’s shaft continued to grow with every sperm-fountaining gush. First her belly grew to the size of Twilight’s bed, then an entire wagon... and then even further beyond. Through it all, Twilight kept her thick hips going at a blur, her fat purple behind tightening up every time she jetted another wave of her torrential cum flood into Trixie.

When the cum-packing growth reached its end, Trixie was laying on top of her newest, greatest asset. Her arms and legs hung limp, the great dome so sloshy and easy to deform that her hands and hooves were half sunken-in.

Twilight paced around her study, wandering slowly around Trixie in a contemplative circle. In doing so, she dragged her veined member along the carpet, leaving a slime-trail Trixie would be expected to shampoo out later.

Twilight clapped her hands together cheerfully. She adored the new look!

"I admit you did a great job transforming yourself into a bimbo," laughed Twilight, "But I think my finishing touches were what it really needed. Now you look like a real slut!”

The pony Princess touched a fingertip to her cheek, smiling impishly as she rocked on her heels. "Don't you agree? Mm?"

Trixie whimpered, trying to shoulder the burden of that ache in her belly... But Twilight had been right. That nourishing semen would be absorbed inside of her, turned into literally days of nourishment that kept Trixie thick, magically-engorged and made her turn curvier than she even was now. She groaned, then gulped as she thrust both hands to her mouth, fighting to hold her lunch down. “Oog...”

Unfortunately for Trixie, her torment was only just beginning...