The Diet Plan

by Archy

Rating: mature
Tags: Slice of Life, My Little Pony: Friendship is Magic, Original Character, Fetish
Length: 9562

Three friends attempt to lose weight, with disastrous results.

Summer is coming, Mags and Felicity want the perfect beach body to relax on the sands with. However all doesn't go to plan, but with help from a Unicorn friend the fatties might be able to get back on track.

Cover art by Felsette and Graphenescloset.

Please note this story contains clothing destruction, building destruction, fats and weight gain.

Published 2019-01-26 16:40:01 UTC
Last updated 2019-01-26 16:40:01 UTC

The Diet Plan

Clunk!

It was early morning, and a bleary eye’d Mags groaned a little. Rolling over in her bed she opened one tired eye and checked the time on her alarm clock.

08:38 AM.

She groaned louder. Delivery ponies were always early. She had tried and failed multiple times to fit a silent catch system to her letterbox but nothing had worked. Every time somepony from the mail service slipped a letter through it, that familiar clunk always woke her up. She couldn’t actually remember the last time she woke up via her bedside alarm clock. Sitting up in bed she yawned, groaned and stretched her hooves. She might as well get up now. Shuffling herself out of bed and slowly waking up the Unicorn put on her only piece of clothing, her purple jacket and opened her bedroom door to head downstairs and get the mail.

When she got there, all that was sitting on her doormat was a letter. She levitated it up to her face, reading the address. Immediately she recognised the writing as belonging to her marefriend. Rather odd she should ask for her help via a letter, often she would just come over. She hadn’t seen her now for a few weeks though since before the new year. Mags had been busy and Felicity had mentioned that she was going to be busy herself. Magically opening the letter she unfolded it, levitating it in front of her face as she prepared herself a small breakfast and sat down at the table in her dining room to read and eat.

Hi Pinbutt!

The diet has been going great! I’m two weeks in and already I feel so slim! It’s going to be awesome when we hit the beach in the summer! I hope you don’t mind a letter instead of a visit but I’ve been really preoccupied with this so I decided it would be faster to ask if you’d come over to mine as soon as you can via a letter! Love you lots! Hopefully see you soon!

Yogabutt.

The letter looked plain enough, Mags turned the paper over a couple of times with her magic to inspect it. There was nothing out of the ordinary. Just weird that she was that busy her request for a visit had to come in the form of a letter to her. Oh well, she smiled to herself. Her marefriend was a little strange sometimes but this was actually rather tame compared to some of her more outlandish actions. She remembered that time they had both spent the whole night eating chocolate in a chocolate eating contest...nopony had won that day.

Finishing her breakfast she put the bowl in the sink and grabbed her keys, heading out into town towards Felicity’s house. It wasn’t far, just a quick trot a few streets away.
When she arrived, she knocked on the door with her hoof.

“Felicity!? It’s me!”

There was no answer at the door, instead she just heard a muffled “H-hey! Come on in, it’s open!” from somewhere inside the house.

The stutter was slightly suspect, opening the door Mags entered the living room which looked spotless, as if it hadn’t been lived in for weeks. Then she entered the dining room. Her eyes went wide for a mere moment before her expression changed into an enormous grin. The reason for the letter was now more than obvious.

Her marefriend was...well, the diet had clearly gone poorly. Straight in front of Mags was probably the most impossibly large rear that she had ever set eyes on. Felicity still insisted on wearing yoga pants, but they were clearly struggling to keep up with the mare’s now massive size as several rips had appeared throughout the fabric. A few in the middle near her wrecking ball like cheeks and one rather amusingly letting her cutie mark bulge out, as if it was trying to escape the fabric prison that adorned her giant, jiggling fat cheeks. Mags was amazed the mare had any ability to walk, her stubby little hooves seemed totally occupied with trying to support the absolutely massive and overwhelming weight above them.

Coming around to her side it was clear that the Pegasus was going nowhere with her wings either, fat and hefty they sat on her back now completely useless. Her belly below her had formed a huge bed of blubber, in fact it was the only reason the mare was somehow upright. She figured that enormous ass was big enough to tip her backwards if it wasn’t for the belly bed beneath her which glorped and blorped with every little movement she was making.

When Felicity finally turned her attention away from the small pile of fast food she had on the table in front of her, she had a very angry and stern expression noticing Mags was standing looking at her, trying not to burst into a fit of giggles.

“Tell anypony about this and I’ll sit on you.”

The Unicorn tried to temper her grin a little. “I just want to point out how ironic it is how fat you are, and you’re right next to a calendar that has the only date marked on it as diet.” the mare replied, coming a little closer. “I mean, I think this might actually be the extreme opposite of a diet. What happened?” she asked.

“Well, it was meant to be a diet!” Felicity started to say, her angry expression going to a more mellow one. “B-but I just couldn’t resist, all the fast food places in town started having sales and free delivery! I didn’t even have to leave the house anymore! Look!” the enormous mare blurted out, pointing one of her flabby hooves at the small pile of burgers, fries and milkshakes set out on the table in front of her. “S-sorry for the deception in the letter but...I couldn’t leave the house. I don’t think I’d fit out the front door.” she said with a small blush, her titanic frame shaking slightly as she reached forward for a burger. At least with her eating, Mags had a chance to reply.

“Okay, well at least I understand why you didn’t just stop by. Felicity you’re well...huge. You must weigh about four times as much as when I last saw you, and you were obese then!”

Her marefriend continued eating, not replying. She was rather quickly polishing off the food that was on the table. Mags continued.

“Look I’ll help you, but fast food clearly hasn’t done you any favours. You can finish what you have and then we’ve really got to get you focused on this diet.” she said, giving her marefriend a small hug.

“O-okay, fine. But you’ve got to help me okay!? I-I’m really weak right now, it’s just too easy to order such delicious food…” the Pegasus confessed, somehow turning her massive girth to face Mags.

“Well what if I stayed with you?” she asked.

“That might help. I have a spare bedroom. Um...I can’t fit in mine anymore. I’ve basically been sleeping here.” Felicity confessed. “I can just about make it from the dining room to the living room the get the orders. I uh, well, if I try and squeeze myself through door frames I think I’d end up destroying them.” she said with a small grin.

“I can see that..” Mags said. It was rather amazing how so much of the weight had gone to Felicity’s rear end. It was easily towering above her head behind her, absolutely packed with blubber those chubby cheeks could have been put to good use as a couple of wrecking balls to bring down buildings. “You know what’s more impressive, that the yoga pants still fit.”

“Hardly, I can hear them ripping every so often. Can’t see it though...I just know it feels a bit more uh, breezy back there in certain spots.” Felicity confessed, her cheeks reddening slightly more.

The Unicorn giggled. “Well I’ll stay and help you lose weight, alright? Shall I take the spare bedroom?”

“Yeah, it’s the door opposite mine.” Felicity said. “Somehow, I can still fit down the hallway, I guess they made them a bit wider. Not that they anticipated my size.” she started to ponder.

“Looks stay here, I’ll just head home, grab some things and then come back. Alright?”

“Okay, uh. Don’t be too long. Might order more fast food…” Felicity said, Mags just smiling back.
“Well I’ll be about 20 minutes. I’m sure you can resist it for that long, right?”

“R-right…” she replied, looking rather sheepish. Her stomach groowwlleeeddd in hunger beneath her. “S-seriously, don’t be too long.”

“Back soon!” her Unicorn partner said, leaving the house and heading back to get the essentials. She’d have to cancel a few jobs. By Celestia she’d never seen a mare that massive. Mags was no stranger to being a bit chubby but Felicity looked like all she had done for the past two weeks was eat fast food non stop. Clearly not the type of beach body she was aiming for. No matter, she was her partner. She’d stay as long as she needed to get her slim again.

-

Returning, Felicity had now moved into the living room taking up most of the space and was just idly watching some TV. She smiled as her marefriend entered the house levitating a small case packed with a few things she would need for an extensive stay.

“I’ll just go and unpack.” Mags said, watching the lazy glutton of a Pegasus make no attempt to get up and help, too focused on the TV.

“Alright.”

Heading down the corridor she found the room, it was rather obvious. Whereas Felicity’s door was a nice blue like her coat, the room opposite looked like it hadn’t been touched for a while. It contained only a few things. Just a bed, wardrobe etc.

Mags was curious though. There was however another door slightly further along. She had visited Felicity many times, but her marefriend had always shied her away from showing her this room. Making some excuse like it was full of junk. Well with her now so big she was almost immobile, Mags had no issue checking it out and getting caught snooping. There was a small lock on the door, curious again but easily opened with some magic. The Unicorn made her way inside.

It was another bedroom. At least it looked that way. The room was very sparse. There was a single bed in the middle with a purple mattress and then...tanks. Very strange. The curious Unicorn approached them. They weren’t very tall ones, but there was a couple. Looking inside she could see the interior contained what looked like a huge amount of strawberry milkshake mix. She laughed a little to herself. It was clear what had been going on now. It wasn’t just fast food, Mags knew it couldn’t have been. The Pegasus would have had to have been eating non stop for weeks to even get to a fraction of the size she was. Clearly she had been sneaking in here and gulping down huge quantities of milkshakes. It didn’t surprise her, Felicity made no secret of the fact it was her absolutely favourite thing to guzzle. But clearly she had been chugging down so much it had done a real number of her figure.

Looking closer it seemed the system was made for efficiency too. There were no jugs or anything to dispense the milkshake into like you’d get normally, both tanks were connected to a single pink hose that was rather lengthy. She assumed that was so Felicity could perch herself on the bed and consume the fattening mixture much faster.

The more she looked, the more...enticing the idea was. Both tanks looked full too, as if Felicity had just topped them up in preparation to have more. Well she couldn’t have that, she was here to help. But it really would be a huge shame to just dump all that delicious milkshake…

Getting on the bed and levitating the hose to her, Mags was going to do what it took to help her marefriend. She slipped the hose into her maw, it was rather soft on her lips. Both tanks had a single valve to control the flow. Eagerly, she turned it on.

Her mouth was filled with milkshake mixture. It was rather delicious, Mags easily taking to sucking it down. Quickly she could feel her frame begin to expand and grow. This was no ordinary mixture, it felt a lot more fattening…

Ulp ulp ulp…

The Unicorn fell into a rather wonderful feeding session. Her body expanding beneath her she was loving how speedily she was gaining weight. Her cheeks started to go a hint of red as she continued to gain and suck down the milkshake mixture, her hefty body starting to spread over the bed as her gut began to start to form a bed of blubber beneath her. Her jacket tightened against her body, she was growing at an immense rate. She could see how Felicity had gotten so big so quickly, with this to feed on she thought that she could easily be her marefriends size, or bigger, by the time she had finished gulping it down.

Ulp ulp ulp…

Mags could feel herself packing on hundreds of pounds. Her hooves were becoming flabby, her belly had now formed that bed underneath her she thought it would, so much so that it pushed her titanic ass upwards behind her. Her hooves were struggling to stay grounded. In fact as she shifted her weight to try to get one hoof on the bed to balance herself, she felt her flank rise and jiggle behind her as both her hooves now wiggled uselessly slightly above the bed. Still though she was getting larger, bigger and fatter than she had ever been. Her cheeks bulged out, fat looking for anywhere it could go to expand her growing frame.

She tried shifting her weight again, but this time it was just a little too much. Underneath her, the struggling bed, already weak from having one massive pony use it to fatten up on started to give way.

Crunch, crack!

Mags could hear the bed giving way under her, but at this point, she didn’t care. It would just give her more room to grow…

CRUNCH!

Finally, the bed gave up, slats shooting out from underneath like wooden missiles and legs flying off comically in every direction. The hefty Unicorn felt her body shift down slightly, the fall cushioned by her absolutely huge jiggling body which protested slightly with a sloooshhh as all that milkshake mixture inside her sloshed around.

The noise however was rather loud and a few moments later as she kept chugging, she heard a knock at the door.

“Mags! What’s going on in there!?”

Clearly the noise of her breaking the bed had alerted Felicity. The Unicorn was close though, she could feel the flow of the milkshakes from the tank lessening as she continued to suck on what she could.

Ulp ulp ulp…

The Unicorn was barely mobile at this point, only able to put one fat hoof down by leaning on her side a little onto the remains of the bed. She blushed, looking back at the door. At any moment Felicity would open it and see her, utterly immobile and having drunk all her milkshake mix…

Finally the Pegasus clearly couldn’t wait any longer. With a click the door opened.

“Mags! I told you not to...uh...oh my.”

She couldn’t enter, but she could see through the door in front of her an absolutely titanic rump jiggling and wiggling on the remains of her bed. Mags, hose still in her mouth looking back at her just blushed deeper, continuing to drink as much of the milkshake from the tank as she could.

“So this is your plan to help me hmm? Out-gain me?” The Pegasus said, it was her turn to giggle now. Finally the tanks dried up and Mags spat the hose out, looking rather embarrassed and still very red. She was just about mobile, shuffling around on her massive belly to face her marefriend.

“N-no...just uh. Well, you’re the one who’s been gaining in more ways than you told me about!” she said, pointing a flabby hoof at the tanks. “I knew it wasn’t just fast food, there is no way you’d be as big as you are!”

The Pegasus looked a bit guilty. “Okay you got me, I was using milkshakes too...how much of it did you drink by the way?” she asked, looking at her now almost immobile marefriend.

“Uh...well I had to drink it all, to stop you getting any fatter!” she said triumphantly, losing her balance a little and putting a hoof back down to steady herself. Her gut bloorrppeedd beneath her.

“You know you could have just dumped it or drained the tanks.” Felicity said, pointing a chubby hoof of her own towards a button near the valve that said “EMPTY”.

The Unicorn blushed. “Y-yeah, but seemed like a waste.”

“I suppose, well I’m amazed you drunk all that. I was drinking through those tanks in a week, not in about thirty minutes.” she giggled.

Their conversation however, was interrupted by a knock at the front door.

“Hmm, not expecting anypony.” Felicity said, looking confused.

“Are you sure it’s not more fast food.” Mags replied with a grin.

“NO! I’m being good! I didn’t order any!...yet.” the fat Pegasus replied, turning herself to go back to answer the door. When she got to the living room, Mags was already there, having teleported herself from the bedroom to get there.

“Answer it then.”

Felicity opened the door, on the other side. On the other side was Lilac Prose, who had decided to drop by to see a few of her friends. Usually in Canterlot she was visiting Ponyville for the day.

“Hey guys. I was gonna...oh. I mean okay.”

“Lilac?” Mags asked. She could see the unmistakable pink body and purple hair through the door, although, much larger than when she last had seen her.

“Yeah. I was uh, gonna ask for some help - I had waaaaaaay too much food over Hearthswarming. Seems you both did as well.” she said, not a hint of sarcasm in her voice. At least Lilac was still fat, but not so fat she couldn’t get inside. She looked extremely slim compared to the hugely fat Mags and Felicity. “What happened to you two?”

“Well somepony was supposed to go on a diet, but it seems she couldn’t stick to it.” Mags said, pointing a fat hoof at her marefriend. “Look at her, she has a rump that could kill a stallion in seconds!”

“Well you’re not much better lardbutt! She was slim herself up until about thirty minutes ago. Then she found my milkshake tanks and decided to ‘help me’ by devouring all of it! Some help!” Felicity retorted.

“Well at least I’m trying! You’ve been lying to me about your diet! Your letter said it was going great and you had the perfect beach body!” Mags almost yelled back.

“That was just to get you here! I’m not a Unicorn! I can’t teleport! I couldn’t come to you!” Felicity started to shout in reply.

“Girls…”

“Oh yeah! Big whoop! I can teleport around! At least I can get around!” Mags yelled.

“I can get around! Just slowly! I gotta make sure the yoga pants don’t rip anymore!” Felicity shouted back.

“GIRLS.”

The two stopped. It was rare for Lilac to shout, being as chill as she usually was.

“Relax. This is only a minor setback. It’s only January. Summer is a long time away. You’ve got plenty of time to lose all this weight and you can help each other. Now look, I will be back in a month to visit and I expect you both to be more than mobile by then okay? We’ve all got to look good for the beach.”

The two blubberballs now calm just agreed.

“Y-yeah, this got out of hand. Sorry Felicity.”

“I’m sorry too Mags, I just wanted some help...now look at us. We’re both a couple of real elephants of ponies.” she said with a small grin. “We’ll be good Lilac, you can count on us to be ready for your visit in February.”

“Great, now both of you just I dunno...chill out for a bit then get to work. It’ll be fine, don’t worry. See you in a month.” and with that, Lilac left the two massive mares to their own devices. Her friends were cool, she knew they’d pull through and lose those huge jelly bellies of theirs.

-

It had been a month, February was in full swing and the weather was finally starting to warm up. Lilac had returned to Ponyville to check up on her two friends. She was a little nervous, she wasn’t sure what they’d make of her now, especially after she had told both of them to slim down for the summer.

Rather than knocking, she decided to teleport herself inside Felicity’s house. She would have been more courteous but she didn’t feel like doing damage to the doorframe.

She appeared in the lounge a moment later. The room this time looked well lived in, in fact, most of the furniture had been pushed up towards the walls. She assumed to make room to do exercise or some such thing. Her assumptions though proved hugely incorrect as she turned herself to look into the dining room.

“And if you tell anypony about this, I’ll sit on YOU.”

The describe what was greeted with was not so difficult. Lilac herself had, gained a fair bit of weight in the month she had been away. A lot of laziness combined with eating the rich foods of Canterlot had made her pack on the pounds. She was hoping her two friends would be able to pass on some tips to her they had for slimming down.

But in front of her were two mammoth, jiggling immensely huge ponies. Clearly the diet hadn’t even began. Mags and Felicity were now both stood at the table with a large pile of food in front of them. They had both seemingly doubled in size, huge quaking and jiggling bodies seemed to wobble and sway at even the tiniest movement. Both of their monster flanks were trying to escape hugely ripped pairs of yoga pants, hardly containing the titanic amount of blubber that was trying to escape the material. Lilac assumed they had started to work out, getting into the right clothing but had given up quickly. Both ponies looked to be mobile, just barely. Each sporting an even bigger belly bed and fat, chunky hooves that just about met the floor. Felicity, being a Pegasus, now had huge fat bingo wings that sat lazily on her back, her ass jiggling and wobbling like Mag’s next to her.

What Lilac had walked in on however was a stern looking Mags threatening to sit on her partner who was giggling in response. The whole time which was just a few seconds, their bodies were still wobbling, jiggling and blorping due to the thousands of pounds each of them weighed.

“Diet going well then?” Lilac asked, pushing her way between the two of them. There was no more room or anywhere else for her to go, the two huge fat ponies took up most of the room and now with Lilac in there as well, her added size meant they had to squish into walls just to all fit inside.

“Lilac!? Oh gosh it has been a month hasn’t it…” Felicity said.

“Y-yeah, we meant to start the diet. Really.” Mags carried on. “But um, well. Yeah.” she didn’t have any other words to really justify herself or her size.

“Okay, enough is enough. If I leave you two alone you’re just going to keep eating. Can you even get out the house anymore?” she asked.

“Well I can.” Mags replied. “Felicity, not so much.”

“Okay, if you’re so huge and fat you can’t even get out your house you have to go to a gym. Come on, we’re going right now.” Lilac said. “I use one sometimes in Ponyville, I could use a bit of getting into shape myself. Yes I also realise the irony of getting you out the house when you can’t Felicity, but we’ll figure it out.”

“Fine, and what happened to you?” Felicity asked, taking note of Lilac’s also increased size. She wasn’t quite as big as the two of them, but still extremely fat and hefty.

“Canterlot food does this to you.” she simply replied, teleporting herself outside. She was quickly joined by Mags next to her, the giant jiggling Unicorn’s body shifting slightly and wobbling at the spell being used to move her out of the house.

“You gonna teleport Felicity too?”

“No, I think this will be much more fun…”

Felicity appeared at the front door. She was easily three times its width and her ass was twice as tall as it was. She started to exit but very quickly, was wedged. Fat squishing and squeezing around the frame she was struggling to get out and moved about one third of her hugely obese body out before giving up, completely stuck.

“M-Mags, honey? If I try and get out anymore I’ll probably destroy the house…”

“Alright. Hold on.”

With a poof, the Unicorn teleported her marefriend out, her whole body quaking as she settled back onto the street outside. The door frame however had suffered, bulged outwards trying to make room for Felicity to escape her own home.

“We’ll get that fixed later, now it’s a short uh...waddle? I guess. A few streets over. Lets go.”

The ponies slowly began to move, following Lilac, lardy bodies wobbling and sloshing to and fro as they did so. There was another problem, they had to walk single file, so wide and huge they took up most of the slim Ponyville streets trying to navigate themselves through them. Not that any seemed to mind. With Mags in the middle Felicity was getting a nice view of that absolutely monstrous grey rump in front of her face, all that flesh jiggling and blorping as it tried to stay contained within the yoga pants was rather lovely.

When they made it, all three of them were exhausted despite travelling only a few streets over. Panting they made their way inside, thankfully the gym was made to accommodate even extra plus sized ponies of their magnitude.

At the reception, Lilac was greeted by a friendly face.

“Ah Lilac, I can see you need a few more visits again! W-woah…” the receptionist was rather stunned, her gaze instantly going to Mags and Felicity who took up a large space in the lobby. “I uh, I think they need more than just a few visits.” she stammered.

“Yeah, they got a little carried away and now need a bit of drastic weight loss. Two memberships for them, I think they’ll be practically living here for the next few months.” she said idly.

“Of course, uh. One moment.” the receptionist replied, vanishing for a few moments to get them both membership cards.

“Think they have food here?” Mags asked Felicity whilst Lilac dealt with the memberships.

“Probably, even gym goers gotta eat right?” she replied. “I think they have massage parlours and saunas too.”

“Ohhhhh, that sounds really lovely right now.”

With the memberships sorted, it was time for Lilac to get the two of them working out.

Immediately all eyes fell on the lardy trio as they entered the main room that housed the equipment. Quickly ponies were whispered to each other.

“Oh my Celestia, they’re the size of houses. How do you get so fat?”

“Yoga pants weren’t made large enough for those flanks…”

“Jeez, I didn’t realise a pony could be so jiggly.”

Lilac scowled, she didn’t want to discourage her friends before they had even started. “Pay them no mind. Everypony has to start somewhere.”

“R-right…” Mags and Felicity replied in unison, both feeling all those eyes staring at them. Hopefully, starting to work out would get the attention off them both.

The first question to answer was what sort of machine would any of them fit on?

Most of the equipment was very small...despite being a gym, it wasn’t suited to the extra plus sizes of Mags, Felicity and Lilac. Each individual pony tried a piece of equipment to see if it could handle their massive girth.

Mags went for a treadmill. Although she could get on, they were placed rather close together next to others in a row and the mare was far too massive just to fit on one by herself. Using her magic, she levitated the two next to her closer so she could form a triple wide one that fitted her bulk, despite the added width she hardly fitted on all three still. Even now with an extra wide piece of equipment her belly still smothered the rolling floor, huge stomach completely covering it and sloshing against it. Starting the rolling floor underneath she could feel her whole body jiggling and wobbling up and down with each trot, all the while her fat, quivering rump pushing into ponies at her side as she tried not to sway about. Not that it mattered too much, after a few moments, the floor under her stopped as with her huge weight she had trotted it into submission. She was glad for the break.

Felicity plonked herself on an exercise bike, an amusing sight as her massive and impossibly wobbly flank completely swallowed the seat she went to sit on. It was hard work, the lardy Pegasus managed a few pedals before becoming rather tired. So massive on the machine she didn’t even look like she was sitting, her rear almost engulfing the whole bike as well as the seat, her yoga pants forming new rips and tears in the material with her increased movement. After a few pedals and a lot of panting, the bike was wedged so deep in her bulbous flank that the poor puny thing was already twisted and bent from her massive body pushing into it. When she did get off, the bike came apart with a crunch! The titanic butt of the Pegasus just far too much for the bike to take. It was left in tatters as she waddled away blushing.

Lilac went for something a little more relaxing, or so she thought. There were a number of exercise balls in a large open space, however this proved rather futile to try to do any activities involving sitting. As soon as the massive Unicorn plonked her rear on the ball to do any sort of work out, the ball unable to stand the weight of her rump quickly popped. By the fifth ball she had given up. The three ponies met at the shake bar to discuss their next plan of action.

Three massive rumps perched on top of metal stools that were practically being swallowed by ass was gaining a lot of attention from the gym goers, as was their ‘workouts’ that they had attempted.

“Anypony have any luck?” Mags asked her friends.

“No...I tried exercise balls but they all popped, I didn’t think causing more property damage would be a good idea.” Lilac replied, rather sheepishly taking a sip of the shake she had.

“Same, I tried a treadmill but it didn’t last very long. I think I was bumping ponies off the ones they were on next to me…” she trailed off. “Felicity?”

Exercise bike but uh, hard work and the seat wasn’t nearly big enough.” she explained.

“You know they have a sauna.” Lilac said.

“A sauna?” Mags asked.

“Yeah, we could always try to sweat off the weight!” Lilac said enthusiastically. “Come on, I’ll show you.” the three got up, leaving the remains of their shakes and the now slightly bent but still in tact metal stools at the bar. As they crossed the gym all ponies still going single file tried their best not to bump into things but it was rather inevitable due to their sizes. All three felt equipment and ponies squish into their blubber as it jiggled about, which was followed by plenty of apologies like “Excuse me!” and “Sorry!” as they made their way to the sauna. Thankfully when they arrived, it was free.

The door however to get in, was comically small. It was about the same size, if a little larger than the door out of Felicity’s house.

“Best not to use magic, the room isn’t an easy space to teleport into.” Lilac said.

Despite being the smallest Lilac had to squeeze in, her belly squishing and squeezing against the doorframe, when she got that through, her titanic cheeks behind her became wedged in the frame, but with a bit of pushing from Mags and Felicity she managed to jiggle herself inside. Once in, she pushed herself up against the back wall in the middle of the room.

Mags was next, even huger than Lilac. Her stomach immediately became wedged with a glorp! as she tried to force herself inside, pushing her way in with some help from her marefriend however she managed to get up to her butt which was far too wide for the door.

“F-Felicity, you’re gonna have to push really hard!” she called out, the Pegasus turning around and leaning the full weight of her ass onto her. A few gym ponies passing by stopped to stare, watching as two titanic butts pressed up against each as one slowly vanished into the sauna, giant ass cheeks quaking and jiggling against each other as with a lot of effort, Mags finally made it inside.

Finally Felicity went in, having the same problem as her marefriend. Luckily Lilac and Mags, already in the sauna were able to grab a flabby hoof each to help pull her in. Like Mags, her stomach was quickly wedged, giant gut stuck but slowly slipping through with pulls from the ponies inside. The gym goer ponies outside well...most had just stopped to stare at the massive flank adorned with now badly ripped yoga pants also started to get into the sauna. Most had mouth agape in awe, completely mesmerised by all the blubber jiggling in front of their eyes. A few turned their nose up and trotted away in disgust. Other blushed...they liked what they saw.

“One final pull Lilac and she’ll be in!”

“Okay Mags!”

SHRRIIIIPPPPPP!!!

The final tug was almost too much for the yoga pants adorning Felicity’s rear, a huge new rip appearing right down the middle on the back where her two wrecking ball cheeks met. She blushed, the two mares inside giggling.

“W-well we got in, at least it’s relaxing.” Felicity said, taking her place next to Lilac along from Mags. The sauna was not exactly generous in size, there was no way any other ponies were getting inside.

The three relaxed, after the short workout it was rather nice to be warm and close. The three were very close, all of their fat fighting for space as the small sauna made them squish close together. There was hardly an inch of space anywhere in the room as gigantic, flabby bodies struggled to keep in check. Mags, feeling her own body press up against the wall and Lilac she couldn’t resist a little fun...

Smoooossshhhhhh

With as much force as she could manage, Mags pressed her titanic cheeks up against the rear wall of the sauna, spreading her massive, rippling ass wide and feeling every little bit of blubber behind her wobbling around. It was...wonderful, she sighed and cooed, her fat frame taking full advantage of the enclosed space as she pushed gently backwards and forwards in a more rhythmic motion against the wall to put her body into a nice wobble.

“M-Mags!”

The cry came from Lilac, causing her to stop abruptly.

“W-wha?”

“I can feel that!”

In her enjoyment the mare had forgotten that she was pressed so closely up against her two friends that she was making their bodies quake with hers. Her own cheeks went just a little more red than they were already.

“Well!? Feels good doesn’t it?” she retorted.

“...Yeah okay, it does.” Felicity said, Lilac turning to her to look at her own blushing face. “Well I’m sorry, it does! I could feel every inch of my fat quaking against the wall…” she confessed.

“You know I bet it would be even more lovely if all 3 rubbed our butts against the wall together.” Mags said a little sly, already starting to rock her immense frame back and forth against the wall. Felicity started to sway her rear as well, poor Lilac who was crammed in the middle of two quaking and jiggling mares swaying their rumps around was blushing a deep red as her own body was almost attacked by blubber from the two ponies beside her. She couldn’t help but give in, swaying her own rear around as well to match their motions. Quickly, all three mares were pushing their massive, jiggling rears up against the wall. Fat bodies shifting around and fat sloshing against fat like oceans battling for room. The tide of blubber that adorned their hugely fat bodies pushed forward and backwards, the three massive mares were loving it. Panting and huffing as they each felt rather a lot of pleasure as the fat rolled around them. The wall however, behind, was not loving 3 titanic asses pressing against it. It was starting to give way…

“A-anypony hear something?” Mags asked in the middle of feeling her cheeks squish up against Lilac and the wall, only being more and more spurred on to increase her rocks and wobbles.

“N-no.” Lilac replied.

“J-just lost in...this.” was all Felicity managed.

Crunch!

A small portion of wall gave way, not that any of the three cared. They were all lost in feeling thousands of pounds of blubber jiggling and swaying. The more they wobbled themselves around, the better it felt. Harder and harder, hotter and hotter. The three ponies were squishing, squeezing their way to a moment of pure bliss. It was wonderful…

“A-ahhhh!”

“G-guhhhh…”

“Ha-aaahhhh!”

FA-THUD!

The wall gave way as they all did, crashing down being able to stand no more of the three of the fat mares shoving their fat rears into it. A number of ponies stopped their routine to watch the sauna get absolutely annihilated by three jiggling, wobbling butts that were now peeking out from where the wall once was. The three flopped down, causing the whole building to shake as their enormous weights hit the floor. After a moment of panting and recovery, Mags was the first to speak.

“D-didn’t know we were so fat we could ruin whole walls…”

“G-guess now we know.” Felicity replied, still slightly out of breath.

“T-that certainly counts as property damage…” Lilac said, taking a glance back. Not that she could see, all that was in her vision behind her was three still jiggling butts that were now propping up the remains of the sauna.

“At least we have an exit, I didn’t fancy squeezing my way out again.” Mags giggled.

With a bit of careful movement, the three monstrous mares managed to wiggle their rears out to the stares of gym goers who were really taking note of their size at this point. Once freed, the ruins of the sauna immediately were taped off by staff.

“You’re paying for that!”

“Fine.” Lilac said casually. “Put it on my bill.” was all she said, having enjoyed herself too much to care. “Well I think that was successful ladies. What now?” she asked.

“How about home, but let's stop for some food first? All that squishing made me hungry.” Mags said, her belly grumbling beneath her legs.

“Me too actually…” Felicity replied, all three of them in fact were hungry. It was tough work using your flank to wreck walls.

“Any suggestions?” Lilac asked.

“I know a good burger place, we can order the Knockout burger!”

“The what?” asked Mags.

“You’ll see.” the Pegasus said with a grin, leading them on single file towards her favourite food spot.

The building was fairly plain, it was obvious it was a fast food joint. The three huge ponies had no issue getting inside apart from their colossal rears brushing up against the door frame as they entered. It seemed the owners had made provision for having such plus sized ponies visit.

Once inside, Felicity immediately was recognised by the young stallion who lead them to their seats. It was a squeeze again, he put them all in the largest booth. Even with that the three ponies squished and jiggled their way in, massive flanks pushing up and hanging over the back of the seats as their stomachs surged forward and wedged themselves firmly in place at the table. Like the sauna, all three were close together and wedged in tightly. There was no room to move.

“Ah, Mrs Stars. Lovely to see you again. I can see you’ve been enjoying yourself, as have your friends. Can I get you anything to start?”

“Thanks, three huge milkshakes and three Knockout burgers if you please!”

The stallion just smiled with a sly grin. “Very well, I’ll be back momentarily.” he said, before vanishing to put the order in.

“So you come here often?” Lilac asked Felicity.

“Well I was, before I got too massive to leave the house...then I was just ordering their take out a couple of times a day.” she said, looking over the menu to pass the time whilst they waited for their food. “You know if you eat the whole Knockout burger it’s free?”

“Why is it called the Knockout?” asked Mags.

“Because it’s so huge it’ll knock you out!” Felicity replied with a giggle. “No I’m kidding, at most it puts you into a bit of a food coma. It’s a burger as big as your head.”

“Sounds like the right meal for three huge mares like us.” Mags replied. The next 20 minutes were filled with idle chatter and the grumbling of bellies as the three waited. Eventually though, three burgers fit for three hugely obese mares were placed on the table. With the shakes of course.

It was hard to actually imagine eating a burger so big unless you deconstructed it or had the same sort of jaw as a snake that could be unhinged. Each pony attacked the burger in different ways. Mags pulled each patty and filling out making smaller sandwiches she could consume. Felicity cut it into chunks that were more readily swallowed down. Lilac squashed what she could, managing to fit good portions in her maw.

Watching the three fatties consume the food like in the gym, had gained the attention of a number of restaurant goers. The food was vanishing fast, each pony eating at a fast pace. This time though they were focused on eating, their huge bodies jiggling and expanding with each bite of the delicious food.

“BUUUURRRRAAAAPPPPPP!!!!!”

“UURRRRRRRPPPPPPPPPP!!!!”

BWWAAAAARRRRPPPPPP!!!!”

There was a trio of gaseous releases from each at the end of the meal, having eaten so fast they got a bit of indigestion between the trio. Bellies quaked and sloshed against one another as they each let go a belch that sent their bodies into jiggles, a massive expulsion of gas that filled the ears of everypony in the restaurant. Once they finished, the three went to sucking down milkshakes as if nothing had happened, not paying attention to the stares.

“Mmmmm, my favourite part.” Felicity said.

“The milkshake? Of course it is fat ass, more calories for your ass which is hardly fitting in those yoga pants anymore.” Mags said bluntly.

“Well neither is yours cutie pie, look at all those rips.” Felicity replied with a blush, they all laughed and finished up their drinks.

“Everything okay girls?” the server asked, taking their plates away and the shake jugs.

“Wonderful as always. I believe we owe six bits? Just paying for the drinks.” Felicity said, with Mags levitating over the payment into his front apron pocket.

“Of course, come again.”

The three mares squeezed their way out the booth, now even heavier. As each one got out their rears bwooommpphheeddd! back to their regular, jiggly resting positions now freed from the booth. It was time to go home, relax and then head back for more ‘working out’ tomorrow.

-

“Hnnnnggg, come on!”

The morning was not going so well for Mags and Felicity, Lilac having stayed the night.

“Guys, have you got to wear those things? They’re utterly ruined as it is.” she asked, watching as the two impossibly obese mares tried their hardest to get the ripped and shredded yoga pants on their rumps.

“Of course we do! Hnnnnnng! C-can’t go to a gym without- gah! -proper attire!” Felicity protested, her marefriend using as much magic as she could to try to pull the pair up onto her ass, which was protesting itself by not letting the ruined clothing much further up than the middle of her cheeks. Mags panted, taking a huge hefty step backwards.

“O-okay, lemme just...hnnnggg!”

The Unicorn was trying to get her own pair on now, struggling a great deal like Felicity. With a mighty tug, she managed to get the pair nearly over her rear, but not without doing some damage.

Shrriiiipppp!

A huge new gash appeared down the side of the left cheek, cutie mark bulging out the side even more a blubbery gash in her pants. Felicity giggled. “Now that yours are on, finish putting mine on sweetie.” she asked politely, the red faced Unicorn working her magic once again to finish with a lot of struggle getting her marefriends clothes on.

“Now then.” Lilac said. “Back to the gym. I figure today well...okay the equipment isn’t working. We destroyed the sauna. How about we just take advantage of the facilities they have got that can fit us?” Lilac suggested.

“Well what does that leave?” asked Felicity.

“Uhm...juice bar?” Lilac sheepishly replied. The trio shrugged. At least the shakes were slimming right? If they couldn’t work out and slim down by doing actual exercise, at least they could start with food. More food was always welcome.

Another trot to the gym single file, flabby asses and jiggling tums wobbling and quaking as they moved. When they arrived, the three mares headed straight for the juice bar, the stools still bent trying to support their huge posteriors from the day before. They took a seat, swallowing it whole once again and ordering shakes.

“Well it’s something...hmm…” Mags said, looking around. It had only been a single day since their visit, but she recognised the ponies around her as the ones that had been staring at their antics. “Guys...do the other patrons look...bigger?” she asked.

Lilac and Felicity turned their heads to observe. It wasn’t bigger like more jacked up like you’d expect gym ponies to be, it was fatter. There wasn’t a huge amount to it but, it was absolutely obvious that some had gone home last night and stuffed their faces with food. There was now a large portion of generous tums and rears that were certainly a lot more chunky than yesterday.

“Seems you three had an effect and it’ll be good for business.” the mare serving them at the bar commented. “I heard some gossip last night. That stunt destroying the sauna with your flanks got a different sort of attention than what is used to in this place. Some ponies started questioning if thin is really the way to go.” she said, pushing another three glasses their way to top them up.

“Y-yeah, I can see that.” Felicity replied, her eyes unblinking as she scanned the room just to see how many of the ponies had gained overnight. It was quite a few.

And that was how it went. The three mares continued to visit and drink shakes, not losing anymore weight (in fact gaining quite a few hundred pounds instead) as they sat each day at the juice bar and watched the attendees grow and grow...and grow. This was helped along by a daily visit to Felicity’s favourite burger joint, with Knockout burgers adding plenty to their ever growing size. With each passing day a number of stallions and mares, who actually became quite friendly with them started to hugely increase in mass. Some asking what their secret was to their size. Lilac, Mags and Felicity only happy to share what made them so fat and huge. In the months leading up to summer, the gym turned from weight loss to weight gain. Impossibly large fat ponies dominated the interior. Gym equipment, if it was used, was ruined within days. The business gave up, opting instead to put in a number of eateries so their now fat focused patrons could gorge themselves instead.

Summer rolled around, much like many of the ponies in town. Now hyper obese and loving their size. Lilac had stayed for the extended duration, only going home back to Canterlot once or twice to check up on things.

It was a glorious sunny day and the three were confident they had the perfect bodies for the beach.

“Ready?” Mags asked.

“Ready!” both Felicity and Lilac replied.

It was a little difficult to find a spot that could accommodate them all, the beach was rather filled with fatties. Oh well, they couldn’t lose it. Might as well make everypony else gain it right?

Once they settled down on beach towels the size of carts, the three relaxed. Beach clothing stretched to the limit sporting rips already.

“Did you bring the oil?” Lilac asked.

“Of course, I’m not silly.” Mags replied, getting out a few tubs. Lilac looked at her in disbelief.

“That’s it? MAGS! We’re huge! We need a few GALLONS! Not that tiny amount!” Lilac laughed, Felicity giggling with her.

“S-sorry girls. Make the best with what we’ve got?” she said sheepishly, magically opening up one of the bottles and covering her hooves in oil. “I’ll do Felicity, Lilac are you okay on your own if you just levitate the bottle?”

“Sure thing, you do your partner.” the Unicorn replied.

“Mmmm, if we were in the bedroom this would be obscene.” Mags said, pushing her fatty hooves all around Felicity’s huge overblown body, working them into her flab folds and getting in every nook and cranny she could to make sure her partner was well protected. “Gonna take me an age to cover all your flab.” she said, working along the fat of her stomach and round to her rear.

“T-take your time honey, ohhhh - right there. That’s it.” Felicity said, feeling her huge rump getting lathered in oil, Mags spreading her hooves over her cheeks in wide arcing sweeps that was making all that flesh wobble and bounce. “Reminds me of the sauna all those months ago.”

“This might be a little more of a reminder.” the Unicorn cooed back, squirting some of the oil onto her bulky chest and then leaning her fat belly into the rump of her partner, spreading oil by squishing her chest against her ass. “Like that?”

No reply and a lot of squeaking told her that she did, a lot. She carried on until she had managed to cover all of Felicity’s rump with her chest, as much as she could. Fat folds pushing up against her lardy ass as she finished rubbing.

She heard Felicity coo, feeling her huge body attended to as Mags moved off her rump and round her side, her huge spilling gut getting the last of the oil. The mare finished it off with a boop on her nose to cover her snoot from the rays.

“My turn.” Mags winked, plonking herself down on the towel with a slam! as Felicity got to her hooves and started to do the same thing, working her own hooves around Mags lardy body as she started to cover her with what was left of the oil.

“Mmmm, you’re good at this. Might have to use oil elsewhere.” she winked, immediately going to a deep blush as Felicity made her way to the back, now treating herself to rubbing the obese Unicorn’s rump as she pushed her hooves along her blubbery butt. The mare had to bury her head towards the sand so she didn’t squeak in pleasure or let other ponies know she was blushing.

“Indeed, well I think like Lilac says we’d need quite a few gallons.” the Pegasus cooed, once again as Mags had done moving off her butt, she couldn’t resist pulling the same trick and covering her fatty chest with oil and then diving head first into her rear to push as much oil as she could onto her ass with her blubbery gut. “Now do you like that?” she asked, Mags giving the same response of squeaks and pants as Felicity had done. “I thought so…” she said with a smile, making sure to get really deep in her folds with her chest as she pushed her blubbery belly all over the Unicorns fat ass.

Eventually though she ran out and moved onto pushing the oil up her side, fat flowing over her hooves as she made sure to get as much coverage as possible over the hugely obese Unicorn that was jiggling in front of her. She finished off with a boop on her snoot too. “There, now we’re both protected.” she giggled, plonking herself back down and discarding the bottle.

“One more pony to protect though…” Mags said.

“Should we?”

“I think we should…”

Mags magically levitated the last of the oil as squirted as much as she could onto both her and Felicity’s rears, their bulks dripping with the gooey substance as they both turned to shade Lilac with their asses. At the last second, the semi-focused Unicorn looked up and managed a “Wha?...” before her whole body was smothered in oozing ass fat as Felicity and Mags squished their enormous oiled rears all over her, smothering her completely in blubber as they jiggled, rubbed and pushed their overbearing flanks all over Lilac. Well, it was one way to oil up…

“I think she’s enjoying it…” Mags said with a lusty blush.

“What makes you so sure?” Felicity replied, continuing to rub her ass all over the trapped Unicorn below.

“Well she keeps grabbing for my flanks and squeezing them…” Mags said, her wrecking ball cheeks bouncing up and down on Lilac.

“Mmmm, she’s pushing her hind legs into mine. Rather appreciative.” Felicity giggled. After a moment of rubbing, squishing and pushing their rears all over Lilac, the two mares got up. Underneath, a dazed and very giggly Lilac was in a bit of a haze.

“O-okay, that was...different. I liked it.” she sputtered.

“Told you she was enjoying it.” Mags grinned. “At least as well now, she’s happy and protected.”

The beach was almost stuffed with fatties. There wasn’t much room. In fact it was rather useful, many a pony was finding shelter from the sun under huge towering rears that cast shade all the way down the beach. The three relaxed and started to enjoy the summer sun.

“Well this wasn’t the beach body I planned for, but I’ll take it.” Lilac said, relaxing and lying stomach first on her towel.

“Well, it is a kind of beach body. Just a much larger one.” Mags said smiling, Felicity agreeing with her.

“Do you actually think I had a chance of starting a diet?” she asked.

“No!” came the reply in unison from Mags and Lilac, the three going into a fit of giggles.

“Yeah it was a pretty slim chance wasn’t it.”

“Something none of us, or anypony else on this beach are.” Mags said, letting her body sag slightly as she closed her eyes to relax. “This is bliss.”

“The beach?” Lilac asked.

“Somewhat, and this rump and belly. I love how squishy I am.” she said.

“Me too, part of why I never started the diet. I love the squish.” Felicity said, also closing her eyes to really relax, letting the warmth and cool sea breeze really flow over her hefty frame.

“I agree, I still need to catch up to you two.” Lilac said, giving her rump a small wiggle to try to emphasise its slightly more petite nature.

“I’m sure you will.” Mags said. “For now, lets just relax. This is what we came for. We can think about fattening you up later.”

The three started to drift off into a small nap, there was more gaining to do. But that could wait for now. Besides, this was just the start of summer. There was no reason they couldn’t take a break from the beach to fit a little eating in somewhere. There were a number of months ahead and a lot of ways to get bigger. It was a wonderful thought.