Unsuspectingly Spellbound

by Archy

Rating: mature
Tags: Slice of Life, Anthro, My Little Pony: Friendship is Magic, Rarity, Original Character, Fetish
Length: 5020

When Rarity uses her partner Scribble Script as a plus sized model, a little magical revenge is in order.

Despite penning down what seemed to be hundreds of ideas at this point, Scribble was coming up short. Everything she had was either far too mean, far too complicated or would take so much effort it just wasn't worth it. Her bloated stomach gurgled, just reminding her of the predicament she was in. There must be some way she could teach Rarity a lesson...

Story commission for Anon. Want your own story? Check out my journal for info!

Please note this story contains fats, weight gain and feeding.

Cover art by King Kakapo.

Published 2019-10-28 18:10:02 UTC
Last updated 2019-10-28 18:10:02 UTC

Unsuspectingly Spellbound

‘Could I spike her food? No… What about something disguised as healthy but actually it’s full of calories? No, she’d notice… This is much harder than I thought it would be.’

Scribble Script had been musing to herself for a good few hours now. She had been penning ideas down in her notebook, but all she had so far where clichés and vastly over elaborate payback plans that would involve months of planning and gathering materials. It had to be at least reasonably fast and secretive.

Her notebook was already a number of pages full of things she had discarded, lines scrawled through the text to discount whatever just wouldn’t work. Just feed her cake had been lined out a few pages ago.

There had to be a way, Rarity somehow always managed to gently tease or coerce her into things. But she was just so darn good at it. It didn’t help Scribble that any sort of revenge she could think up was often discarded just for being that bit too mean. In fact looking down at her copious ideas and notes she had made she estimated she had gotten rid of ninety percent of items on there for just being far too overboard, as well as impractical.

She was only here thinking about all this because her stomach in front of her was a constant reminder of how Rarity had managed to compel her to do as she asked. She remembered the conversation well.

“But darling!” Rarity had wailed, as is her standard go-to phrase whenever she wanted something of others. “I really need a plus sized model! Who can I trust if not my own partner!”

The last part had been what had broken her resolve and made her agree to help. She couldn’t say no to that gorgeous creature, especially when she started to wail. It broke her heart. Of course as soon as Scribble had agreed, her tone of voice had shot back to happy jubilation in an instant now she had what she wanted. Almost immediately she had started to feed Scribble, citing that she had to maximise her gain as the need for her to model the clothes was fast approaching. Then the pies had started being levitated in. It was almost as if she had them prepared assuming she would say yes. She knew what she was like, but she loved her just the same. It probably didn’t help Scribble that she was slightly shy and had a hard time saying no. Those pies had been very tasty once she had started eating though.

But when Rarity had said “Plus sized model.” she didn’t exactly go halfway house. Leaving her thoughts and returning to the present that jiggling stomach was a constant reminder of just what she had gotten herself into. Clothes hardly fit anymore, ironic that she was partnered to a mare who could whip up just about anything with a needle and thread. The plus sized clothes Rarity had put together had fit no problem! Of course those had vanished the moment the show was over, they were to be sold after all.

First, she’d drop by the boutique with some of her garments to let out. It was the least she figured Rarity could do for her after she had agreed to help her with this, then she’d get back to thinking of some sort of light but amusing revenge to get her own back. She didn’t want to harm the poor thing, just show her what it was like to be a plus sized model.

-

The bell tinkled as it always did when a customer entered the boutique. Rarity however was nowhere to be seen. It was a little after hours, customers had probably left at this point. Whilst it was still open she suspected the mare was upstairs doing work on more garments. She was right of course. The bell could always be heard from upstairs and as Scribble waited, Rarity appeared from the door to the staircase and beamed at her as she always did.

“Scribble! Lovely to see you! You’re a little early, I thought we were meeting later?” Rarity said, puzzled slightly. “Didn’t we agree drinks at eight?”

“We did yes.” Scribble replied. “But do you mind doing me a favour? For uh...my favour?” she said, stuttering slightly as she put some of her clothes down on a nearby table. She gave her stomach a little look that Rarity couldn’t miss to emphasise what she was about to ask of her. “Nothing really fits anymore since I uh, helped you out. Do you mind letting these out slightly so I can actually wear something that covers me?”

Rarity smiled. “Of course I can, it’s what I do after all! Let me just take your measurements.” she said, levitating a tape measure over and starting to work her way around Scribble.

“Eh? You know my measurements.”

“I knew your measurements dear, I’m sure since you kindly volunteered to help they’ve changed somewhat. Otherwise you wouldn’t be here.” Rarity said soothingly.

“Right, of course…” was all Scribble managed to reply. That was just like Rarity as well, oh yes. Volunteered! She didn’t feel pressured by the sobbing, wailing or the impression that without her help her life would have crumbled around her. But that was Rarity, she still loved her regardless. It was a part of her nature that whilst it might have got on her nerves a little she didn’t mind it, especially when pie was involved…

“All done!” Rarity said, putting the tape measure away and taking down some notes on Scribbles sizes. “Yes, I can let these out...or make you something new. Leave it here and I’ll get to it as soon as I can for you.”

“Thanks Rarity, it’s appreciated.”

“It’s the least I can do. I have a few more things to finish up here. Where can I find you?”

“Oh um…” Scribble had to think fast, it was only an hour or so until eight when they were supposed to meet. There was no point going home. But where was likely to be quiet where nopony would see her? “I’ll be at the library. I figured I’d look for an art book or something, I’m sure I’ll have found it by the time you get there.”

Rarity didn’t suspect a thing. “Splendid. See you in an hour or so.” she said, vanishing back up the stairs to carry on with her work. Scribble left the boutique and made for the library, no point in lying even further and besides. Perhaps she might find something there that could help her getting her own back at Rarity, if not that she was sure there was likely to be an art book anyway.

-

Ponyville had constructed a new library shortly after the destruction of the one Twilight used to look after. A library in a tree had been novel but something more like they had in Canterlot was far better suited to not being blown to pieces. Ponyville’s wasn’t as grand but it served its purpose. Due to being home to the Princess of Friendship it was often open at late hours, Twilight had decreed it. She was known to be seen slipping in there after dark for some late night reading.

Tonight however, it was just Scribble and the very bored, nodding off librarian who was half asleep and not paying attention to her single patron. Scribble had made straight for the magical section, spellbooks were always a great source of knowledge and she was fairly certain one in there might be useful.

However the problem with public library spellbooks was that they were often quite tame in the spells they held within their pages. The really high level incantations were held by figures of authority...like Twilight. Scribble had secretly been hoping she was here on one of her nightly reading trips but she hadn’t appeared tonight. It looked like she’d have to search through the books herself.

She had been here for forty five minutes now and was getting a little desperate. Rarity was known to be late but often when it was something fun with friends or loved ones she was surprisingly punctual. Scribble flicked through the pages at speed, being careful not to damage the books.

‘A cookery book? Scribble, you really are clutching at straws…’ she thought to herself. She had looked at a number of others at this stage and all had come up short. She knew what she was looking for but wasn’t sure what book would contain the answer. As she flicked through the pages of the cookery book she stopped, spotting a page that had a small illustration of two loaves of bread. The first showed a rather flat, plain looking loaf. The other showed one that was double the size and looked incredibly fluffy and well...almost bloated. She read the spell description:

Dramatic Final Fermentation Spell

For when your bread and other dishes need that little bit of extra oomph!

She read the description and the casting notes. It seemed simple enough, she’d have to spend a little bit of time practising at home but this was the sort of spell mostly anypony could learn rather quickly. It was a low level cookery spell that looked like it was suited to ponies baking in the kitchen. She wondered if this was how Pinkie Pie made the bread at Sugarcube Corner look extra fluffy. She’d have to get outside help though of course. The problem was that it was for food, Rarity wasn’t exactly food, not that Scribble hadn’t thought about doing things to her that involved eating more than a few times…

She was about to move on, but read a small addendum down the bottom of the page.

Note, with a small adjustment to the casting technique this can be applied to other foods.

A small adjustment huh? Well she was sure a bit more of an adjustment could make the spell apply to a bit more than just food. She smiled, it might take a little longer but Scribble had found her spell. She closed the book and made her way back to the library desk, she could see Rarity was already there waiting for her, making small talk with the librarian which Scribble picked up on as she got closer.

“...and with a bit of extra effort dear, you can really make that gown of yours stand out! Bring it by when you want and I’ll take a look. Ah here she is. Find what you wanted?” Rarity asked, the librarian taking the book and checking it out by stamping the slip in the front.

“I think so, something a bit different to what I wanted but it’ll be perfect.” Scribble said with a little grin. Again Rarity failed to pick up on her subtle body language. The librarian passed the book over telling Scribble she had it for a week, then late fees would be applied. Clutching the book Scribble and Rarity left the library, Scribble sure as soon as she was home that night that she’d start reading up on and practising the spell.

-

It had been a bit hit and miss and taken longer than he had expected, but Scribble was fairly certain the modified spell was ready for a test.

Of course she’d tried the vanilla spell first, she wasn’t the best baker but Scribble had managed to get the bread to rise to a similar state to that nice fluffy picture the book had shown. At least on principle it worked. Then she had moved onto different things, slowly working up to a test on herself.

Although her body had protested a little, she had managed to get it to make her ‘rise’ so to speak, with a bit of modification to how it was written in the book Scribble had added a few pounds to her already plump frame. She had been gentle, the fully powered spell would likely do a lot more.

She set out to the boutique to find Rarity. When she arrived a client was just leaving, with Rarity smiling as Scribble came through the door, giving her a smooch to show her affection.

“I won’t be long and then I’ll be done!” Rarity said smiling. “Oh! I have some fantastic new gowns, perhaps you’d like to see?”

Scribble agreed, letting Rarity babble on about her new clothing. She was completely unaware Scribble was casting a spell, so enthralled was she in explaining all the intricacies of the craftsmanship. Scribbles horn glowed as she weaved her magic, focusing on a few particular areas of Rarity’s body to start with…

It was gentle at first, Scribble didn’t want Rarity to look down and suddenly see that her body was blowing up like a balloon, she’d immediately become suspicious. She focused the spell on her hips and bust, gently making her body rise like that bread in the book…

It wasn’t until Rarity had been talking for a solid five minutes she actually took note of what was going on. It probably helped her realise when the pants she was wearing had tightened up so much against her body that they were right on the verge of tearing. The spell was working slowly, it was subtle but Rarity could see her body was starting to take a new shape. Her hips were becoming much larger, soft and squishy as the lower part of her body started to form a nice hourglass shape as Scribble worked the spell. Her breasts too had swelled, plump yet still firm breasts now pushing outwards from the clothing that kept them hidden underneath. Surprised, Rarity stopped her speech and looked down at herself.

“S-Scribble!? What’s this???” she almost shrieked, right at the moment her pants button decided to give up its fight against her expanding body and ping off with a rather soundless and unceremonious escape from the material they were previously keeping attached to Rarity. It made Scribble laugh, so much so that she was hardly able to keep her own composure and the spell going as she almost doubled over.

Rarity however went into full panic mode, rushing to a mirror to observe her body and what was happening to it, better than she could by simply looking as her growing and fattening breasts were starting to obscure her vision somewhat.. Her hips, still growing had now doubled in width and her breasts were already starting to peek out the top of her bra that was just about holding on, the clasp about the give way like her pants button. When she saw the gentle spell aura around her body, she immediately turned to scribble who was still giggling.

“What are you doing!? Stop it this instant!” Rarity demanded, but Scribble had no intention of doing so. She was actually more determined to keep going, much to the annoyance of Rarity.

SHRRRIIIPPPPP!!!!

The pants finally waved a white flag of defeat as they literally ripped off Rarity’s expanding body, her thunderous thighs far too much of an overpowering force for the rather thin and frankly inadequate material to deal with. Unfortunately, all this did was frustrate Rarity even more. “Scribble! That was one of my favourite pairs!” she wailed, Rarity now somewhat resigning herself to the effects of the spell as Scribble continued to cast.

“Sorry Rarity, but fair is fair! I think this will make us more than even!” Scribble said giggling a little with delight, continuing to cast her spell. She watched as the rest of Rarity’s clothes perished as her chest finally burst through her bra with another almighty rip. Soon she was reduced to almost no clothing as her fattening body quickly consumed her panties. The massive mare had gained hundreds of pounds in mere moments, the potent effect of the spell making her body rise in size just like a loaf of bread. Fat rolls and wobbling, jiggling undulations all over her was just far too much for the white Unicorn, who had no choice but to plant herself down on her now fattened rear as she was too big to support her size, huffing and puffing as she struggled to even think about controlling the rapid expansion she was experiencing. Not that she could, Scribble was having the fun there.

However the spell wasn’t going to keep going forever, as simple as it was it was taking its toll on Scribble to keep casting it. She carried on until she was exhausted herself, stopping only when she was sure Rarity wasn’t able to retaliate as easy as she liked. She observed Rarity and took delight in her new massive body, huge might be a bit of a tad mean and probably make Rarity burst into tears, but it was apt. The Unicorn was huge. Her marshmallowy ass acted as a rather huge and soft seat behind her for a squishy rotund stomach that was making rather cute noises as it tried its best to deal with all the added weight it now had weighing it down. If Rarity wasn’t so lady like she swore she would have burped but the mare held her tongue. She was so massive her legs were spread wide by a gut that was simply searching for more space to spread itself into, Rarity hardly able to move herself apart from vague shuffles that simply led to that jello like body jiggling even more.

With Rarity a little indisposed, this gave Scribble a golden opportunity, the fridge was close by. Scribble wondered if some of that pie was still left over.

It was better than that, Rarity clearly had ideas for more plus sized models and the fridge itself was almost overflowing with food. Scribble plucked out a few trays of desserts and brought them to the now hardly mobile Rarity. She simply said “Open wide.” as took a slice, this time using her levitation magic to push it into Rarity’s maw. She didn’t protest, in fact she accepted the food willingly. Scribble didn’t think anything of it, they were even sure but she wanted to really cement that in place. What better way than with a few choice desserts…

“You’re a bit of a glutton really aren’t you?” Scribble gently teased her lover, cooing the words softly as she fed Rarity the treats she deserved. She watched as Rarity blushed, it just gave her more incentive to keep feeding her, rub her fattened breasts and take in that hefty belly that Rarity had quickly developed with the help of the spell. It was developing even better now, the pies making her rolls expand to a point where Scribble could easily run her fingers under each one and grab huge fistfuls of her love handles to toy with. “I am too, but I love that you are.” came the next tease, more mouthfuls of pie being devoured by the helpless Rarity.

Scribble made a few trips back and forth to the fridge, Rarity never telling her to stop and Scribble delighting in just how large her cute marefriend was getting. She was delighting in feeding her, her own hefty body pressing heavily against Rarity’s for that lovely squish factor she was enjoying so much. She was just about to go get another round of pies when she noticed that Rarity was really enjoying herself, a white dribble of her juices leaking from those fattened breasts...

“Mmm, milk? Well I suppose that was inevitable, you are enjoying yourself.” Scribble giggled, her nervousness had vanished somewhat since she had started working the spell. With Rarity having succumbed to her little plan she felt far more confident, of course she wouldn’t be saying no to being another plus sized model if she asked but she felt good that she had exacted a little revenge on her. The milk looked so good though, as well as those bountiful and heaving breasts she now sported that sat atop that plush belly of hers. So soft and warm, she couldn’t resist a little taste…

She put her mouth to one of Rarity’s enlarged nipples, the spell and pies having added blubber everywhere, even her breasts which Scribble had no idea what bra size they must be. Probably something that didn’t even exist. A lovely side effect of her little plan wasn’t just that she had made Rarity bigger in the obvious places, it was that she was bigger in places she wouldn’t even have dreamed of her enlarging in. Those breasts of hers were so divine, so plump and juicy, they looked like two great big ripe fruits, ready to bear their milky prize to her. She started to drink the milk, it was sweet and warm. Every gulp she had just made her want more and more. Rarity was so huge, so big and bulk that Scribble couldn’t see her grinning with delight as her partner sucked on her fat breasts. She felt it only fair to let her know what was about to happen to her though.

“I suppose I’ve had my comeuppance, still this might be a little overboard Scribble. I can hardly move…” she started to say, seeing if she’d get a reply. There was none. “But I think you’ll be joining me shortly. You won’t be able to stop sucking…”

Her words rang true, Scribble was loving every moment and drop of milk she was suckling down from her fat partners breast. In fact she actually found herself giving her enlarged areola a squeeze to get even more out. She didn’t pay a lick of attention to her body however, she was as absorbed in the moment as Rarity had been when she was endlessly chatting about her latest line of clothes.

The effect was less noticeable at first, Scribble was still wearing clothes that hardly fitted. Rarity still hadn’t gotten around to letting out that clothing from before. It was only when she heard that unmistakable sound of fabric coming apart did she realise.

RRRIIIIPPPPP!!!!

It wasn’t quite a clothes explosion like Rarity had experienced, but Scribble felt her pants peel away from her body as her now almost naked torso started to fatten up like Rarity. The milk she was drinking on was sooooooo good. She didn’t want to stop despite the effect it was having on her. Her addicted brain was slightly addled, not taking in that she was expanding herself at a much faster rate than the spell had on Rarity. Rarity herself just giggled with delight, fat body sloshing around and her stomach bloorrppeeed in delight at its new size which Rarity, although she wouldn’t admit it yet, was rather enjoying. Who needed more models with the two of them? They could show off their bodies together. Her mind was already racing with ideas for even bigger clothing, but for now she felt that she should just enjoy the moment and her own little double revenge back at Scribble for putting her in this position.

With every suckle, Scribble could feel herself getting so much huger. The spell had been rather impressive with what it had done as well as the food she had fed to her lover, but this milk was something else. It went down her throat so easily. She just couldn’t stop herself sucking it down. Scribble felt like she was becoming more and more needy of it the more she drank, not quite able to put her finger on why she wanted to drink so much of it so fast. But Rarity wasn’t stopping her doing so, not that Scribble noticed as she drank, she just wanted more of that lovely delicious milk inside her.

With her clothes now a distant memory the greedy Scribble put her needy hands around Rarity’s breasts, making sure to pay special attention to the one that she had her lips around. Every little knead and grope she made on them made Rarity moan in pleasure, Scribble feeling the effects of the milk on her expanding body. Her hips were enormous, so much added weight in so little time was a wonderful feeling. If she wasn’t so in love with Rarity’s milk and wanting to get all over her boobs she would have reached back and felt just how wide her flank was getting. She didn’t care though, she could feel it getting wider and wider with each suck of the milk, her body almost visibly gaining pounds to any outside observer who might have watched her drinking it up. Her stomach slooosshhheeedddd! in delight as she drank, her own gut quickly becoming almost overwhelmed by rolls of lard that threatened to form her own belly bed at any moment much like Rarity had. Fat and heavy Scribble took one hand off her partner’s breasts for a mere moment to just see if she could count her belly rolls by touch but quickly couldn’t help herself feeling up that glorious wobbling mare in front of her. By the time Rarity cared to explain what was happening to her, she was already lost in a sea of ecstasy and addiction to growing, her ears pricking up slightly at the words Rarity cooed to her.

“Extra fattening milk. I wish I could explain it but it’s something I’ve always had, addictive too darling. I’m sure you’re loving every suck.” the white mare explained, seeing the fat body of Scribble rise before her eyes to start to equal her own fattened frame. Rarity knew about her milk, she always had. But she kept it to herself, feeling that she would have let Scribble know about it and what it did when the time was right. A little revenge right now felt as good a time as any, with Scribble paying so much attention to her though it was hard to keep herself quiet. Rarity letting off little squeaks and pants of joy as she felt her whole body treated like royalty by the mare who loved her. She herself was becoming a little overwhelmed, but not so much that she didn’t notice that Scribble was now just about equally her in size. A huge hefty immobile mare jiggled before her, still utterly obsessed with drinking every last drop of her breast milk that she could get her greedy hands on.

Like the spell though Rarity didn’t have an endless supply of milk, she could feel her breasts being squeezed for a final time as a defeated Scribble finally realised there was no more. The last final frantic gropes on her body lustily made her moan out in delight as Scribble frantically tried to see if she could get anymore out but had to concede that she had simply drunk it all. It wasn’t until now Rarity had some time to rest, with Scribble letting her lips go from the spent nipple she tried to lean back to no avail, a now impossibly large ass preventing her from doing so and acting more like a beanbag chair for her to rest on instead.

“That was…”

“Incredible?” Rarity replied. She took the word right out of Scribbles mouth.

“Yeah incredible...oh boy.” Scribble said, observing herself, how own massive rolls now rivalling Rarity’s. She didn’t know where to begin, she was just massive all over. Neither mare was sure who was bigger, but they knew one thing. They had to take advantage of their newfound sizes, with Scribble just about to haul herself up and gently but heftily squish her body against Rarity, both mares moaning in pleasure as fat rolls jostled against one another sending a pleasurable sensation across both their bodies.

“Ohhhhh…”

“M-mmmfff….”

There was more panting as the two rested for a moment, even the simple act of a rather lewd hug was tiring. Both hardly able to move Rarity outstretched her fattened arms around Scribble, hugging her tightly.

“I think we’re even dear, but we may have gone a bit too far. But I must say, it’s rather lovely.” Rarity admitted, seeing Scribble blush as she finally revealed she enjoyed it.

“S-Same...being so big is...wonderful. You know we could always be bigger…” Scribble teased, taking a handful of Rarity’s stomach flab and giving it a little jiggle for pleasure, Rarity having to stifle another moan and electing to blush her way out of the situation instead, with a little magic thrown in.

Somehow, despite the two’s massive sizes she managed to teleport them both upstairs to her bed, which creaked and groaned under the pressure of suddenly having to support several hundred pound mares now resting atop it. The two quickly felt themselves sink into the plush mattress of the bed, their sizes so great that they both nearly simply vanished within it before coming to a gentle rest on top with plenty of space around them. ‘So like Rarity.’ Scribble mused, she always had the best and this bed certainly was that indeed. Rarity just sighed, feeling tired from the events that had transpired between the two of them.

“How about a little deal?” she suggested.

“Mmm, a deal?” Scribble asked, curious and cuddling up closely to Rarity.

“First one to wake up tomorrow has to figure out how to reverse the spell. As lovely as this is perhaps we could do it for fun, when we feel like a little blubbery pleasure.” she cooed, gently putting a hand around Scribble’s face and looking at her lovingly. Now not so preoccupied with the addictive and fattening milk, Scribble agreed.

“Sounds good, but I couldn’t see a reversal spell…” she confessed. It hadn’t crossed her mind to even look for one when she was toying around with the altered spell.

“I’m sure one of us can figure it out, by the way. I’m a heavy sleeper.” Rarity said with a little chuckle.

“Well so am I now.” Scribble laughed back, yawning as she did so.

Hugging close, the two lovers fell asleep in each others arms, the only sound being the continued creaks of the bed as they slept.