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Feedist Kinktober: Magic Mirror

Intended to be part of a series of one-shots in response to @fatguarddog’s Feedist Kinktober 2024 prompts, but I loved the prompt and it became a much bigger story than I expected. The prompt was Magic Mirror.

I had mixed feelings about Theo moving in with me. We’d met several years ago through a friend of a friend, and he and his boyfriend Luca were invited to a lot of the same parties as me. I never really clicked with Luca… He was incredibly good looking and obsessively sculpted his body at the gym, giving him the look of an Adonis. But he knew he was gorgeous and used it as an excuse to treat people poorly.

Theo was different. He was smart, funny and exceptionally kind. For the most part, I was super excited for the memories we’d make together, and it would be great to save some money by splitting rent. But on the other hand, Theo was… kind of needy. He had criminally low self-esteem, and needed constant reassurance from his friends — especially now that Luca had dumped him. That was the reason he was now living in my spare room.

He’d moved in several weeks ago, and it was largely going well. I loved our daily movie nights and it was nice to share meals with someone. Theo was just as much of a neat freak as me, so it really didn’t feel like a burden having him around. If anything, the apartment was cleaner than ever… But his constant self-doubt was really driving me insane.

“Are you sure the food tastes OK?”, he’d ask after cooking our dinner. “We can turn this movie off if you’re not enjoying it,” he’d apologise just ten minutes into a film. Worst of all was the daily routine of having to reassure him that he looked good before he left the house. “Does my hair look weird?” he’d ask, fretting in the mirror as he adjusted his perfectly coiffed dark hair. “Is this zit noticeable?” he’d press, drawing my attention to a perfectly clear patch of skin. And most infuriating of all: “Do these pants make me look fat?”

Theo was thin as a rail. He was just one of those guys who were blessed with a superhuman metabolism as well as the self-discipline to be really careful about what he ate. Here he was, pushing 30, with not an ounce of fat on his frame. I envied him - I was fit myself, but I had to work really hard in the gym for it. My work as a personal trainer helped with that.

I was being harsh. Theo was a great roommate and an even better friend. I just wished he liked what he saw when he looked in the mirror.

And that’s exactly what I told the old lady behind the counter at Miss Mabel’s Curios & Antiques, a dusty little store downtown that I’d passed by a billion times. I wasn’t sure why I was here - I’d been ranting to a friend about my predicament with Theo, and she’d said that Miss Mabel would know what to do. At my whit’s end, I trusted her recommendation.

“Oh, that’s easy my boy,” she said in a creaky little voice as she jumped down from her stool. She was a small lady, wearing what looked like at least ten cardigans and her messy grey hair tied in a bun atop her head. She had a warm and eccentric charm about her; not quite like a grandma, but moreso like a distant elderly aunt who you saw at the occasional family function.

She tottered off down one of the store’s aisles, before looking back over her shoulder expectantly. “Well, come on then!” she beckoned, and I quickly followed her. We soon stopped in front of a large rectangular object, as tall as I was and concealed under a dust sheet which Miss Mabel promptly whipped off.

It was a mirror - and an old one at that. The glass was in reasonably good condition but the frame - decorated with intricate carvings of daffodils - was in a sorry state, with chunks of wood missing and deep scars across the surface. What on earth did Miss Mabel think I could achieve with this?

“Don’t be so dense, dearie,” she teased, tapping me on the forehead. “This is a magic mirror. Give it to your friend, it’ll sort him right out.”

I had more than a few reservations, most of them related to the small fact that I didn’t believe in magic mirrors - or any kind of magic, actually. And yet, Miss Mabel seemed very certain and there was no hint of trickery in her kind eyes. Plus, when I noticed the £10 price tag on the mirror, it dissolved any concerns I had that this could be a con. That was an absolute steal, even if the mirror had seen better days. I paid her the money and headed for the door, before Miss Mabel called after me.

“Just a wee warning, dearie,” she said hesitantly. “Magic, especially old magic like that, can be unpredictable. Keep an eye on your friend, hm?”

I nodded, and made my way home.

Theo was delighted with the mirror, which I thought was an odd response to something that looked like I’d rescued it from a dump. He might have been unsure at first, raising an eyebrow when I revealed its new location hung in our hallway, but as soon as he looked into it I watched his face change. There was a light in his eyes as they lingered longer than normal on his reflection, and I saw his mouth curl into a smile. That never happened. Maybe the mirror really was magic… In any case, it seemed to do the trick, and I went to bed that evening quietly confident that Theo was going to be a little softer on himself.

When I woke up the following morning, it was to the smell of bacon. Weird, I thought. We usually just had toast for breakfast, or maybe a smoothie. But I certainly wasn’t going to complain! God, Theo was the best roommate I’d ever had…

As I walked out into the hallway, Theo was looking at himself in the mirror and flexing his non-existent muscles. I raised an eyebrow but said nothing, heading through to the kitchen. The bacon was looking very dark in the pan, much crispier than I liked it, and none of the bread for our sandwiches had been buttered.

“Theo, this bacon is looking very done,” I called out to him. He didn’t answer. “Theo?” I called again.

“Ugh, what?” he snapped back in a tone I’d never heard him use before, though he quickly seemed to catch his rude behaviour. “Oh, um, I’m sorry,” he said, scrambling for words but not taking his eyes off his reflection. “Would you mind finishing off breakfast for me?” He asked. “I’m kinda busy.”

He was acting strange, but I tried my best not to overthink it and did as I was asked, slathering some butter on the four slices of bread and transferring the bacon into two sandwiches.

“It’s ready,” I said, and headed to the fridge. That’s weird, I thought. There was no milk left to make our coffees, even though I’d bought some yesterday. And why had Theo put the empty carton back in the fridge? I poured us two glasses of orange juice instead.

At that moment, Theo walked into the kitchen without saying a word, and then left again with the bacon sandwiches. Both of them. And when I gave chase to confront him about it, expecting to find him sat in the living room, I was stopped dead in my tracks. He was stood in the hallway, stuffing the sandwiches into his mouth with eyes fixed on the mirror, like he was watching TV.

I heard Miss Mabel’s warning in my head. Keep an eye on your friend… Something was wrong.

Later that day, I’d rushed over to Miss Mabel’s shop to get her advice - but when I arrived, the lights were off and the door was locked. That’s when I noticed the sign, handwritten in spidery penmanship: “ON VACATION! SIX WEEKS IN EGYPT! SEE YOU SOON DEARIES. MMx”. There was a little drawing of some pyramids in the bottom corner. Fuck.

I didn’t want to mess with the mirror, since I figured if it really was magic then I had no clue how it might affect Theo. Just a glance had changed his behaviour dramatically, who knew what else it could do? And so I reasoned that the best thing to do would be to wait for Miss Mabel to return, and in the meantime to follow her advice and keep an eye on him. After all, he wasn’t exactly a danger or in any pain - he was just acting… different. Little did I know, he’d soon be looking different too…

***

It had started after a few days. The novelty of the mirror seemed to have worn off for Theo, and he no longer spent all day in front of it like he did that first day. But he was still acting differently, and I’d still catch him checking himself out in it multiple times a day. This particular evening, we were sat in front of the TV while Theo ate dinner. Since buying the mirror, Theo only prepared food for himself, but I’d planned to heat up my leftovers from yesterday so that we could eat together. I was feeling distant from him and thought it would be a good chance to chat. Except, when I opened the fridge, I found they were gone, no doubt eaten by my strange new roommate. So I reluctantly ordered a pizza, and sat with Theo as I waited for it to arrive.

Theo didn’t appear to be in the mood for a chat, his eyes glued to the TV while he shovelled heaping forkfuls of creamy pasta into his mouth, chewing loudly. It was like someone else had taken over his body. Most weird of all was his choice of programming - usually, we might watch a documentary together, or catch up on one of our regular dramas. And he’d always ask what I wanted to watch. But today we were watching a home shopping network, with a musclebound (and very attractive) jock demonstrating some workout equipment.

“Oh come on Theo,” I teased, trying to make conversation. “He’s hot, sure, but surely there’s something else we can watch?”

Theo looked at me with a look of utter incomprehension, even pausing his feeding frenzy to process what I’d just said. I felt like I’d offended him. He shoved another fork in his mouth and finally spoke as he chewed.

“That man ain’t hot,” he said, spraying me with flecks of cream before swallowing. “He’s got nothing on me. And look at all the exercise he’s gotta do just to have those puny muscles. Mine are twice as big and are all natural.”

Now it was my turn to look confused. Surely Theo was joking? He had no muscle whatsoever… He was practically a skeleton. Except… Now that I looked at him, I mean really looked at him, that wasn’t quite true…

He was… Not “bigger”, per se… he certainly didn’t look like he’d gained any muscle. But he was… softer, somehow. It was almost imperceptible, a thin coating over his whole body, a slight puffiness… But now that I’d noticed it, there was no denying it. For a moment, I reasoned that it was natural for someone so thin to put on a couple of pounds, considering how much Theo had been stuffing his face these last few days. But then, as he finished his huge bowl of pasta and made his way over to the mirror for his routine post-meal quality time with his reflection, curiosity got the better of me and I peeked into the hallway to watch.

He stood tall and proud, flexing non-existent muscles as though he were a world-champion body builder. And then, most alarmingly of all, I saw him grow.

It happened so slowly I couldn’t even be sure it was really happening, but as I fixed my eyes on his form there was no denying it. His arms were thickening and filling out his sleeves a little more, while the slight softness at his waist began to press against his shirt. Within a few minutes he looked to be about 5lbs heavier - not a big deal for most people, but certainly noticeable on Theo’s lithe frame. My mouth was wide open in shock. This just wasn’t possible. It had to be my eyes playing tricks on me, my imagination getting the better of me… I was just stressed out by Theo’s personality transplant… I…

The doorbell rang, and Theo ignored it, too preoccupied with his reflection. “That’ll be my pizza,” I said, getting to my feet. No sooner had I said it, Theo eagerly answered the door and brought in the pizza, setting it down in before me on the coffee table. I felt an odd sense of relief - this was the kind of attentive behaviour I was used to from Theo. Maybe the magic was wearing off… Maybe my old roommate wasn’t gone after all.

I went to the kitchen to get some drinks (water for me, a glass of milk for Theo) and returned to the living room, where I found Theo already halfway through devouring my pizza.

***

It had been a week since I brought home the mirror, and I was pretty adjusted now to Theo’s newfound greed and selfishness. I found it difficult to get angry with him when I discovered the fridge cleared out or a stack of dirty dishes in the sink - I was the one who had brought the mirror into our home; I was the one who’d meddled because I couldn’t deal with Theo needing a little extra encouragement.

When I got home from work each day, I would typically find Theo in one of two places: sat on the couch stuffing his face, or flexing and pouting in the dreaded mirror. This time, it was the latter.

God, he’d really blown up now. It was all happening so quickly and every time I saw him he looked to be bigger than the time before. I had accepted the impossible fact that the mirror was piling the pounds onto my friend; even now, as I watched him admiring himself, I watched in real time as Theo’s new soft underbelly slowly inched out the bottom of his shirt. He’d always dressed in oversized clothing, but now everything he owned was starting to get very snug on his oversized body.

“My god, I’m gorgeous,” he said aloud. “Luca doesn’t know what he’s missing.” he said, kissing his own soft bicep. “I haven’t been to the gym all week and my guns are looking better than ever!”

I smiled politely, but I was worried. Miss Mabel was still out of town for another five weeks, and I guessed that Theo must have already stacked on about 50lbs. You didn’t need to be a maths genius to figure out that he risked ending up over 400lbs by the time she was able to help us break the spell. If she was able to help us. Theo still stood a chance of working this off now, but if things got that far… he’d be changed forever.

“Theo, can we talk?” I asked. He huffed a little, clearly annoyed to be pulled away from the mirror, but reluctantly followed me into the living room.

***

It had been two weeks since my conversation with Theo, and things were still intensely frosty between us. I’d asked him if he was OK, and he’d insisted he was never better. I’d asked him if he’d noticed any changes in his behaviour, and he’d said he’d just realised that he needed to put himself first. I’d asked him if he’d noticed any changes in his body, and he agreed that yes, he’d been growing lately - that his muscles were inexplicably growing. He couldn’t explain it, he said, but he was happy with the results.

I gently tried to explain that it didn’t look that way to me, that I thought he might have been bulking with how much he’d been eating, but with the right cut he’d be looking awesome in no time… That sent him into a rage. We had a huge argument. He’d screamed at me - was I fucking blind? Did I not see how perfect his body was? I was just jealous - and then he stormed out, softer ass bouncing behind him in too-tight shorts. Since then, we hadn’t really spoken, and things were getting so much worse…

He was really big now. Like, he was a certified fat guy, a fully fledged 300 pounder - or maybe more? It was difficult to tell. Every time I saw him, I had to do a double take: firstly, because my brain wasn’t quite catching up with his skyrocketing weight and was failing to register this figure as my roommate. And secondly, because he’d outgrown all his clothes and taken to wandering the apartment in just a pair of boxer briefs. They were so tight on him that the elastic waistbands had all developed wide holes.

His choice of dress meant that all his fresh fat was on full display, a constant reminder of what I’d brought upon him by bringing home the mirror. His face was round and bloated, making his eyes look beady and piggish above two puffed-out cheeks. Beneath it was a thick ring of fat, a double chin that was exaggerated when he looked down at his phone. His shoulders had become strikingly broad, though not with the muscle he was still convinced he possessed; they rounded out and sloped like big hills, bunching up behind his neck in another wedge of fat that gave him the look of a hunchbacked office worker. Further down, two plump tits hung from his chest, pooling under his armpits and gathering in thick rolls on his back. They were so distracting; jiggling wildly with every slight movement he made, it was impossible to look away. And beneath them sat the main event: a big, soft belly that had started to hang down over his crotch like a flabby apron. Whilst not as jiggly as his tits (perhaps because it was always full of food), it still looked soft and plush, wobbling as he waddled around the apartment. He’d even started to walk like a fat guy, I noticed, swinging his fat arms side to side to offset his sudden weight gain.

I felt terrible. And as I watched him posing yet again in the mirror, having just demolished a family-sized tray of pasta as a snack between meals, I felt even more terrible. The mirror would be working its sinister magic on him and turning all that food into fat. Sure enough, as if to prove a point, I heard a ripping sound and noticed one of the holes in his underwear growing beneath his widening hips. I had to do something.

***

I resolved to get rid of the mirror. I’d known all along it was the right thing to do, but I was scared of Theo’s reaction. He was so volatile. Part of me was also scared of how it might affect him - had he and the mirror formed some kind of magic bond? What would happen if that was severed? But as my friend’s weight inched closer to 400lbs with each day, I knew I had to do something. But the issue was now pressing, as I was due to leave on a trip I’d booked myself months ago. I was going to be gone for two weeks, and while I certainly wasn’t in the mood to go now, I’d already paid a lot of money and it wasn’t exactly like I could wave a wand and stop all this. What good could I possibly do here? In fact, Theo seemed to resent me the more I tried to help. But I could still hear Miss Mabel’s warning that I ought to keep an eye on him, ringing around my head. I reasoned that if I could get the mirror out of the way and then disappear myself for a couple of weeks, maybe that would at least slow whatever was happening to my friend.

And so, when Theo was out getting food, I made my move, carefully taking the mirror off the wall and making my way to the door. Before I could reach it, it opened of its own accord… and there in the doorway was Theo. Fuck. He was so big now that it was impossible not to be intimidated by him, even if he did look ridiculous squeezed into clothes that he was 150lbs too big for. He was visibly uncomfortable, all the fabric digging into his fat, which burst unflatteringly out of every opening. His belly was barely covered by the material, making it look like he was wearing a crop top, and several inches of his ass crack were visible, not able to be contained by the sweatpants that were painted onto his thick, gelatinous thighs. I couldn’t believe he’d left the house like this, but I suppose it was better that than parading around in his underwear. Anyone who saw him must have thought he was totally unaware of his weight, or that he had suddenly ballooned overnight. They would have had no idea how close to the truth they were…

“What the fuck are you doing with that?” he snarled, snatching the mirror off me with one meaty, fat-fingered hand while the other shoved the remaining half of a burger into his mouth. He seemed to swallow it in one gulp. A thick blob of ketchup dripped onto his stretched and strained t-shirt.

I was still frozen, unable to say or do anything. He barged past me, making his way to his bedroom. He re-emerged a few seconds later, no longer carrying the mirror. It would seem he would be keeping it in there from now on. “Don’t touch my shit,” he warned in a terrifyingly severe tone and then tipped a container of fries into his mouth, dropping the empty packet on the floor. I nodded emphatically.

Without hesitation, he tried to peel off his t-shirt but found himself met with great difficulty. He squirmed and writhed his fat body, trying to manoeuvre himself out of the fabric, but it was simply too tight. I had no idea how he’d even got it on… perhaps he’d grown in the time since? Without warning, he let out a yell of frustration and then tore the entire thing off him in one furious motion. “And another thing,” he spat, turning his broad back to me and making his way back into his room. “Stop washing my clothes, I’m sick of you fucking shrinking everything.”

***

The two weeks away had been a complete waste. I was barely able to relax or take in any of the culture, constantly worried about my friend back home. In truth, I wanted to disconnect from Theo. I’d tried to help him change course and he was treating me so terribly… It was hard to care about him. But I couldn’t shake the guilt - it was me that had caused this, and I owed it to Theo to make it right. Besides, this wasn’t really Theo who was acting this way. It had to be something or someone else… Perhaps he was possessed, or hypnotised, or… It couldn’t have changed him, could it? And certainly not so dramatically? But then I remembered the giant, flabby ass that he was no doubt sat on back home, stuffing his fat face, and I knew that it could… I just hoped there was some kind of counter-magic that Miss Mabel could use to undo all this, to make it like it never happened. It was magic after all, right? I’d learned that anything was possible…

After pausing a while outside the apartment door, unsure of the reception I’d receive from my roommate upon my return, I finally pushed it open. One thing I was sure of was the condition I’d find Theo in. I had no doubt in my mind that he would be weighing in another 100lbs heavier than when I’d left, and I’d braced myself for the sight of him. I assumed he’d be sat in the living room, shovelling food into his growing gut - and this suspicion was supported by the volume of fast food wrappers strewn through the hallway. It was disgusting, looking and smelling like a back alley in the city. I couldn’t believe this was my home. But when I peered into the living room, I found nothing there other than more mess. The TV was off and Theo was nowhere to be seen. Hmm… strange… I glanced to where the mirror used to hang, and then to his bedroom. Perhaps he was holed up in there, checking himself out?

Morbid curiosity got the better of me, and I cautiously approached the door, knocking gingerly and calling out his name. “Theo?”

He didn’t respond, but I could hear strange noises coming from within. It sounded like laboured, heavy breathing. Was Theo fucking someone? Or getting himself off? I listened closer - no, it wasn’t that, the breathing was so erratic, gasping for air… He sounded like he was in trouble. I became alarmed. “Theo, are you OK?”

I flung the door open and my world ground to a halt. Theo was not OK.

Theo’s room was a complete pig sty, piled high with empty pizza boxes and food containers. It stank of sweat and grease and god knows what else, the stench so thick in the air I had to cover my nose. He’d propped up the mirror at the end of his bed, presumably so he could lay in it and admire himself… And the consequences of that decision were enormous.

Literally enormous. Theo was totally unrecognisable, his pale pink flesh filling the entire double bed. He was the fattest man I’d ever seen - perhaps the fattest man that had ever been? His facial features were buried under fat; just two beady eyes and a pair of puckered, sauce-stained lips. If I wasn’t aware of all that had passed in the last few weeks, I would never be able to identify this person as Theo. He was completely transformed. His whole body was splattered with various sauces that he had clearly dribbled on mid-feast… which made sense. He was clearly too big to move and showering would have been impossible.

The blob of a man that lay gasping for air in Theo’s bed was almost as wide as he was tall. It’s difficult to describe any part of him in detail, as all his body parts sort of squished together and melded into one another, fat jostling for space. His tits were each bigger than my head, and there were bits of food wedged in his deep cleavage. His arms were so pumped full of fat that I think they were bigger than my waist. I couldn’t see much of his legs as they were covered by his gargantuan belly, rolling and rocking like jelly with each pained breath, but even his feet were swollen with fat, threatening to be swallowed up into his legs. Fuck, I thought to myself. How could someone have fat toes?

I wanted to say something but my brain was completely fried. What the fuck do you say to a whale who was thin as a beanpole little more than a month ago? Theo looked like a fucking sideshow attraction. Fortunately, he spoke first.

“Dude, thank god — you’re here—“ he wheezed. What? Was he actually happy to see me? Maybe the magic had worn off! My hopes were short lived... “Nobody— wants— to deliver— my food,” he confessed. “Bunch of— fucking— assholes…”

I could see why minimum wage delivery drivers would want to avoid this cesspit. Something told me the new Theo was not a generous tipper. But this was my fault after all, and I couldn’t let him starve. Reluctantly I agreed to go pick him something up - if nothing else it would give me time to think over what to do next. I watched him with pity as he placed the pickup order on his phone, his fat sausage fingers mashing things he didn’t mean to press. He didn’t seem to be removing any of those items from his basket, though…

Soon enough I was back at the apartment with ten paper bags full to the brim with junk. They were as fit to burst as he was, and after handing them over I sat on the edge of the bed (squeezing myself onto the only unoccupied corner I could find) and buried my head in my hands. What was I going to do?

He made short work of the meal and half an hour later he was burping, rubbing his giant gut, and admiring himself in the mirror. “Fuck— I’m so— sexy,” he moaned. “Why— did I ever— settle— for Luca? I’m so— out— of his— league… Gotta find— me someone— as hot— I am…”

I snapped. “Theo, how the fuck are you gonna do that?! You’re as big as a fucking house! You can’t even get out of bed!” I wanted to smack him out of his delusional daydream. But it wasn’t fair to take my frustration out on him, and I tried to calm myself. This wasn’t his fault.

“Yes I— fucking— can,” he gasped. “I’m just— resting— so my— muscles— can grow…”

There was silence between us for a moment. I had no idea what to say, and Theo was too distracted by caressing his own lard in the mirror for a conversation. But as he groped himself, his moaning got louder and more… sensual… I was no longer certain that it was just a symptom of discomfort from his overindulgence. He seemed to be enjoying himself…

“Please— man—“ he begged, looking at me with pleading eyes. “Help— me— out— here… I— know— you— can’t— resist— me…”

Fortunately, I didn’t have time to take him up on his perverted offer. There was an almighty crash, and the room seemed to lift up into the air as I felt myself fall downwards. It took me a few seconds to realise what had happened: the cursed mirror had fattened Theo up so big that the bed could no longer support him, and now he and I sat on the floor, surrounded by its broken pieces. His whole body was wobbling from the impact and he looked like a giant, melted marshmallow. I was surprised he didn’t fall straight through the floor and into the apartment below.

I spotted something shiny by my hand, and on closer examination I saw it was a shard of glass. The mirror. I noticed it had fallen over face-down, and when I nervously lifted its side to inspect the damage I saw that the whole thing was shattered. Oh god, I worried to myself. How was Theo going to react?

“What— just— happened—,” Theo grunted to himself as I got to my feet and stood the mirror up. He seemed lost and confused, a softness in his voice that I recognised from before all this mess began. His eyes seemed to adjust to the room, taking in his surroundings as though he’d just woken up from a dream. “What’s— going— on—,” he gasped, shaking his head in confusion (though the fat in his neck limited his movement). Still, his cheeks jiggled as he did so. “Am— I— sick..? I— can’t— breathe…” I barely registered what he was saying, too worried about his response to finding out the mirror was broken.

“Theo,” I said, trying to steady my voice. “I’m really sorry… I’ll buy you a new one right away, but… Ugh. I don’t know how to say this, but…” I gulped. “Your mirror is broken.”

I turned the mirror around to face him, so he could see the damage for himself. For a moment he didn’t really react at all, furrowing his brow in confusion. He didn’t seem at all sure why he should care about a broken mirror, despite the fact he’d done little else for the past five weeks than stare in it and feed himself. But as he looked harder, as he really focussed his eyes on the mountain of flesh looking back at him, something seemed to click in his mind… A moment of world-shattering realisation...

He recognised himself, and his eyes went wide in horror. He screamed.

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