After a little conversation with her aunts and a few tips on how to manage her gaining from Fluttershy, Cadance was now a fully fledged gainer in Equestria. Even though her initial gain was an artificial addon from a blue prank flower. Regardless, she was ready to take on the next level of her adventure.

Cadance awoke from her slumber and yawned quietly, stepping into her slippers once again to look at herself in the mirror. This time, she took no shame in dropping her robe to see her new body, a few new additions bringing her some joy.

It had been a few days since her first unofficial ‘Belly Bash’, but she was not deterred from going the extra mile to enjoy her new pleasure. She may have also encouraged Shining Armor to stay gone a few more weeks so she could have more time to herself as a precaution, just in case. In tandem with her planning, she also began personally adding onto her frame with more sweets, her favorite chocolate treats filling her up nicely.

Soon enough, she was more squishy than ever and was looking much less nervous. Her hips were much more rounded and plump, a smooth surface holding her still massive cutie mark but with a much less warped design. Her cheeks were much the same from before, staying cute and round as she smiled to herself. Her breasts took a small dosage of the added pounds, only adding a few inches to her bust.

But her belly… That was a different story. It grew tremendously, the double layers returning with a vengeance only Chrysalis could achieve. A much larger portion of her gut hung under her garter belt, showing all the way around until where her hips started.

“Wow… I've really pushed myself to the limit.” She said with shock. “But… I feel good at that limit. Maybe I could even go beyond that… Only time will tell I suppose.”

Putting a hand to her middle, she felt its enriching softness. The feeling of her fluffy fat almost made her want to just spend the day playing with it. But today was not that day, as for today… she'd be hosting an official Belly Bash! The name was still one that made her giggle a little, but the concept was interesting. From what Fluttershy told her, it was a group of ponies getting together to embrace their bigness and enjoying the feeling of their fat. Adding on the newly found interest of hearing said pudge bubble up a storm, it was a funny thing to explain.

“Okay, now that I know exactly what I'm dealing with, let's see what I have…” Cadance pulled a scroll from her dresser and read its contents. Scribbled over the parchment, she could see lists of popular snacks, drinks, a reminder to restock on those potions she used before and three guests that she had yet to invite.

“Okay, it seems I have everything laid out. Now, what to do first…” She didn't need much time to think as her stomach gave her a clear answer with a torrent of rumbling that made her belly shake.

“Oh right… Breakfast.” Cadance blushed and rubbed the back of her neck. “After all this time of eating to my heart's and stomach's content, I still can't remember about the first meal of the day.”

Making her way to the dining area, she sat down at the table and had the castle staff make her double what she usually ate. That is, if they could take their eyes off her. It was nothing she hadn't done before, walking out in nothing but lingerie in the morning before she even got dressed. Some days, she was just too hungry to clothe herself and just had to get some food in her before the day started. Most of the time, the staff would just serve her as usual, the sight of her bare body being a sight that they'd been conditioned to get used to.

But ever since she began putting on the pounds, the reactions to her body have drastically changed. Of course, she expected the initial shock of her major change in appearance, but the reactions of the castle staff almost seemed… shy. Perhaps the sight of her larger form made them bashful?

Soon enough, the food came and she tucked in. Fluttershy had advised her to increase her food intake in order to aid her appetite in the future. She told Cadance that even though she looked big on the outside, the Poison Joke most likely didn't change much on the inside, including the size of her stomach. So as a precaution to give her an edge in her future gaining, she increased her food intake to expand her insides and stretch how much she could handle.

Cadance has to admit that she was very surprised that Fluttershy of all ponies, the one who used to be afraid of her own shadow, was giving her tips on how to find self pleasure in her big size. In hindsight, the yellow pegasus gave off a sense of underlying secrets beneath all of those shy moments. Even so, she took all the help she could get.

She finished breakfast and let out a satisfied sigh. She didn't feel full, but she knew she was making progress. Ringing a bell, she notified the servers that she was done and went about her day. Moving into the kitchen, she levitated a bunch of different snacks over to her, grouping them up in a large bubble to carry as she moved along to the alchemist room.

This seems to be going well. Everything I've got will certainly be enjoyable by the guests, especially that special drink I had ordered. Now for the potions! These three are much more experienced at this than I am, so I'll grab the extra strength variant.

Entering the potion room, she greeted the lead alchemist.

“Frogfoot, good to see you again! How have things been going?” Cadance asked.

“Oh, I've been great! Things have been much easier ever since you enlisted these other apprentices to my ward. It's been smooth sailing from then on ever since!” Frogfoot said, waving the pink princess inside. The brown unicorn stallion had been the head alchemist for the Crystal Empire for years, mixing up every potion from Lava Resistance to Weightlessness. And now, he was tasked with making the newly ordered Potions Of Borborygmus.

Originally, he had felt rather embarrassed to ask his colleagues for instructions on how to create a potion to intentionally set off someone's stomach. But once he had realized it was for the princesses, he got right to work on the job, practically plastering it on his forehead to remember the formula.

“So, how goes the making of the potions I requested?” Cadance asked.

“Great, thank you for asking. I will admit, my initial reaction to your request was very… vibrant, for lack of a better term. I told myself… ‘Who in their right mind would want to set their stomach into a frenzy!?’. Then, when I heard the recent news and caught up with the trend, I got right to it. The formula was actually very simple, believe it or not.”

Frogfoot and Cadance turned a corner and came across a large cauldron where two mares were mixing a familiar green liquid.

“Alpine! Frosty! How goes the potions!?” The lead alchemist asked.

“Brilliant, sir!” Alpine said, her yellow eyes bright with excitement. “We've just about finished the mixing process. We've added all the ingredients except for one. Concentrated Citron Juice, Bubble Fruit, The Gas Of A Sulfur Vent, Swamp Tree Acid, and finally…”

Frosty walked over and dropped in the final ingredient. “One Hot Shot Pepper from the Dragonlands. The perfect combination of heat, bubbles and agitating agents to get your stomach going.”

The cauldron shone with a green flame before beginning to bubble and swirl on its own, indicating that the potion was ready to be distributed. Cadance watched with interest as Frosty took a syringe and sucked up a bit of the mixture and put one drop in her mouth. Within seconds, a growl ripped through the air before a burp came from the white pegasus’ mouth.

“Yep, this batch is definitely extra strength! Now, for one last thing…” Frosty took out a spell book and recited an incantation, a flash of blue pulsing in the cauldron before the original green shade returned.

“Can I ask what that last part was?” Frosty nodded and turned the book to her.

“It's a sealing spell to keep the gas from overwhelming the effects of the potions. With the Bubble Fruit, Captured Sulfur Gas and Citron Juice, the reaction is a solid way to get a monster burp out of someone. But no pony is trying to hear a belch when the sounds of their stomach is what they're after, so the spell seals away the gas and redirects the excess energy to create more sound, leaving the belly bubbling reaction of the potion you're looking for.”

The pink alicorn nodded and took a personal note of the process, just in case she wanted to make the same thing on the go. While she got the specifics of how each ingredient added to the effect, Alpine and Frogfoot scooped up the potions into the appropriate bottles for her to leave with. Taking them in her arms, she bid the group farewell and left to set up the spot she would use for the bash. On the way out, she borrowed some parchment and ink to write the invitations and sent them off to their respective recipients.

Cadance hummed to herself as she thought of her first conversation about the possibility of having any success with a larger body. Now that she was finally embracing what she had been ‘Gifted’ with, she had to admit that she was wrong about what she thought before. She actually did enjoy having more weight behind her movements, not to mention the personal pleasure she got from it.

Entering the room she would use for the bash she set up the place. Instead of a table, she just laid the snacks on the ground, placing one potion each next to every cushion. Sitting in her spot, she excitedly waited for her guests, occasionally patting her belly just for the feeling.

–

A Few Hours Later…

After waiting a good while from the beginning of her bash, the first guest walked in. Wearing a black two piece, Cadence welcomed in her own mother-in-law, Twilight Velvet. Having gained a tight relationship with the mother of her sister-in-law, she had become very close friends. After she got her acceptance letter, Cadance was very excited to see what she'd be met with, and she wasn't disappointed. Velvet was a very evenly spread mare, her fat going everywhere in decent quantities to give her enough pudge to have a belly, but also balancing it out with a sizable rear and a decent cup size.

“Cadance, good to see you again! It's been too long, honey!” Velvet said sweetly, taking a seat.

“I know, it's been a very interesting few days to be honest. First thing, you find out you accidentally drank Poison Joke and gave yourself a body to put a walrus to shame. Next, you're having your lead alchemist mix up a potion to make your stomach go nuts because you've started to get turned on by it.” Cadance chuckled sheepishly.

“First Belly Bash, I'm assuming?” Cadance nodded in confirmation. “Well, let me tell you, this isn't the first time this was a big thing. Back in my hay day, before I got married, I was dug in deep with the whole big belly thing. Every soda I drank brought me new waves of pleasure that I didn't know I wanted or enjoyed. Unfortunately, it couldn't last forever as I forced myself to slim down tremendously for my big day to please Night Light.”

“How long did it take you to shake off the chub?” Cadance asked.

“10 weeks. It was a major change, but it was worth it to eventually bring the Princess of Friendship and a Royal Guard Captain into the world. I only recently got back into the trend after I decided I wanted to take myself back to my greatest moments. At least, in my opinion, that is.” Velvet said. “I missed having this big body, feeling how soft and squishy I felt was the best! Now I get to experience that again.”

“Well, I'm glad you feel that way. I'm just getting started and I'm inviting verified veterans in the trade to show me what the pros did.” Cadance said with a chuckle.

“Oh don't feel so bad, everypony has to start somewhere. Speaking of which, who did you bring in?” As she said that, the next guest walked in. Her large belly walking in before her face even appeared, Spoiled Rich, Wife to Filthy Rich and mother to Diamond Tiara strolled in with confidence. He bedazzled two piece accentuated her breasts, her large bust showing off a lot of fur. Her butt was just as large, rounded and plump like Cadance's, but it stuck out much more than hers. Her belly was the biggest part of her, a perfect ball of fat rounding out her figure as she sat down with a sloshy accent.

“Velvet… Your Highness…” She addressed the pair.

“Spoiled Rich…” They responded. The room fell silent for a few seconds, a measure of tension tying things together like a haphazardly wrapped gift. Spoiled Rich was one who had a reputation, and not a good one. A pompous attitude, snobby way of speaking and overall entitlement made her much to despise, that same attitude rubbing off on her offspring. Soon enough, the wealthy pony broke that bondage.

“Oh come on, let's not act like I'm the same pony I was all those months ago. I've changed!” Spoiled argued.

“Oh we know…” Velvet started, pausing to give the peach colored pony one last bit of stress. “We just wanted to mess with you.”

Spoiled sighed as the two other ponies laughed at her, knowing her reaction would be cataloged in their memories for a long while.

“Ha ha, very funny.” She moaned, crossing her arms.

“Oh come now, Spoiled, you've grown from the pony you were all that time ago. Thanks to what your daughter learned from the Cutie Mark Crusaders, you have gained a new sense of purpose and morality. You deserve a good life, like anypony else in this world.” Cadance reassured her. Spoiled smiled and thanked the princess, knowing that her change in attitude didn't go unnoticed.

“So, you were a part of the original craze as well?” Cadance asked, the wealthy pony nodding in affirmation.

“My milk farming heritage led me down a path of mostly liquid gaining. Fluid pumps, jugs of our own product, sugary drinks… all going down my gullet over the years as I gained my weight. Over time, I eventually discovered that potion you mentioned. I took one sip and I felt a roar below my breasts shake my middle. After that, I was hooked. I eventually slimmed down as a choice, my rich husband showing me the good life and encouraging me to lose the pounds so I could enjoy it as much as possible. I did retain some of that weight in the form of a double chin and slight love handles, but it was hidden enough that fur-tight dresses still looked sexy on me.” She explained.

“Huh. So you also lost weight before your marriage?” Velvet said aloud. “Hmm… it seems a trend is forming.”

“Perhaps…” Spoiled said, looking over to Cadance's body and observing her form. “So… how did your pudge come to be?”

“Believe it or not, it was actually accidental. I mistook a batch of Poison Joke for natural herbs and mixed them into my evening tea. The next morning, I woke up with a body that wiggled around like jello and a belly that rumbled like a volcano. I decided to host an unofficial bash with my two aunts and a friend of Twilight's and I finally understood what this fat was meant for.” Cadance explained.

“Interesting. I've never actually experienced the effects of that accursed plant, thankfully… But I have always wondered how different the effects would be depending on where you took the hit.” Spoiled said.

“Me too. When Twilight told me about her little mishap with Poison Joke turning her horn limp, I immediately started forming theories as to how else the flower could produce its strange effects. Creams, oils, dusts… every single external application possibility ran through my head. But never did I think of what would happen when you drank it or ate it.” Velvet thought.

“Celestia told me that I'd be the first case of ingesting the plant, since no other cases had been recorded up until then. So, I guess I decided to make it something exciting.” Just then, the door opened wide and the final pony walked into the room. Golden Brooch. She was a pony Cadance had met during her pregnancy with Flurry Heart when she attended that yoga class for expecting mothers, her also having a daughter later on.

Her body screamed Mom Bod, her thighs and hips being absolutely huge in her semi transparent leggings. Her breasts were just as big, filling out her outfit along with her large gut. That being said, her cream colored belly was a big one. The large bulb was held in her hands, her one piece being the only thing covering it except for a small heart-shaped window exposing her belly button.

As she sat down, her belly slipped out of her hands and jiggled… a lot. Her belly wiggled and wobbled for a long time before coming to a rest in her lap. The other ponies looked between the mare and her belly, amazed at just how much movement she held in her gut.

“Wow Golden, even I don't have that much movement in my gut and I've been at this for years.” Velvet said.

“Well, when you've given birth to one kid and felt the effects of the post-pregnancy fat, you get a little jiggly after a while.” Golden Brooch giggled. “Also, Cadance, it's good to see you again! How's little Flurry doing nowadays?”

“Great, thank you. Now, let's get your story. How did you acquire your big body?” Cadance asked, the other guests turning to engage.

“Well, I've always been a bit plump anyways. But as for how I got bigger? Well, after I gave birth to my daughter, I began feeling a bit bored with my life. Just a baker on Buckley Lane in Ponyville that occasionally gets glances from young colts going through puberty? Not very enticing. Just after my divorce, I loved getting the attention of the young ones. Showing off my hips with fur-tight dresses and other generous clothing. But after a while of being single and raising a child, it gets old. So I decided to go find something to bide my time.”

“Soon enough, I came across this cheeky little article about gaining weight and embracing a ‘Bigger Lifestyle’ to appease your loneliness. So, I dove right in. Being a baker meant not much money spent on outside food and more time spent stuffing myself with my own confections. After a while, I had a belly to be proud of and a figure to match. A few years later, I came across a friend of mine taking a swig of a strange drink. At first, I thought it was soda. But after hearing that belly rumble, it was no mistake I was staring at the potion that would take my experience to new heights!”

The other mares nodded along with the rest of the story and were interested in finding out how she came to enjoy her life as well. Cadance especially enjoyed hearing the story as it validated her feelings in a way, knowing that she was with some of the veterans of this little craze she jumped into.

“Okay, so we all have a story behind our gaining and we've all settled in. But before we get things started, I have to ask… what exactly brought on the making of this special potion before?” Cadance asked, grabbing the one she gave to Velvet. The grey unicorn started the conversation.

“Well, originally, it was made for medicine. From minor cases of curing hiccups with a strong burp to major life-threatening ailments like dislodging a Colic blockage, the bubbling from this potion was considered a medical miracle.” Velvet started.

“But over time, like most things intended for an entirely different purpose, the public snagged the formula for the medicine and began experimenting with it to find a practical use for it.” Spoiled added.

“Many things were tested to find its more public usage. A solution for over-tanning at the beach to clear away sunburns, a way to make a homemade Jacuzzi from the bubbles, even an exfoliating lotion to bubble away blackheads! But after results kept coming back showing that the mixture only worked on stomach acid, the directions changed. After years of testing, ponies eventually went into the… personal pleasure department. Soon enough, the critically acclaimed potion came to be as the go-to way to pleasure yourself with your own stomach sounds.” Golden finished.

“Wow. Who knew that such a simple thing turned into such a complex web of pleasure. I like it!” Cadance said. “Now, without further ado… let's get this Belly Bash started! Now, drink up ladies!”

The four mares popped the corks on their potions and downed the liquid in the bottles. Once the liquid disappeared, they put the bottles down and sat back.

“Just as a heads up, these ones are extra strength, so they'll pack a punch. Now, let's eat up before the show begins.” Grabbing the snacks, they gobbled up everything they could. Cadance made sure to get extra just in case they wanted more, but for the time being, they filled up on what they could. Golden's belly was the one that expanded the most, the rounded blob becoming even more rotund as they ate. Eventually halting the food fest, they settled in and waited for the fun stuff.

Velvet was the first to undergo the effects as muffled moans ran through her belly. Bellowing whale calls roared from her midsection as the grey plumpness of her fur slightly moved. At first, the strength of the potions was put into question as the reaction from the grey unicorn was minimal. But once it started to kick in, the moans became groans that sounded vaguely like a Cragodile.

“Ooh… now I can see why these are extra strength. Feels like a stampede in there.” Velvet said. Spoiled Rich caught the next wave as her massive gut began to bubble wildly. The peach colored mass rolled and rocked as the cauldron of food she had for a belly moved around like a blob.

Golden Brooch was next, her middle growling wildly in an almost predatory tone. The ripples rolled over her belly, her one-piece hiding that fact like a bush holding an elephant. Even the small window on the front moved around a bit in response to her rowdy insides.

“Woo, talk about a wake up call! Haven't felt this much activity since my hay day. That extra strength was a definite plus.” Golden said. Cadance was glad she had brought out some old memories from her guests. But she wasn't done with her road to glory. Reaching over to the snack pile, she pulled away a green bottle with a very stylish label. Bubbles popped and fizzed within, the explosion effect surrounding the logo being a definite sign of its volatile nature.

“Now what do you have there?” Velvet asked.

“An old favorite soda brand from my highschool days. Fizz Bomb Cola! Back then, mostly the boys would grab this thing to have some burping contests in the middle of lunch. Got themselves more detention slips than I could shake my tail at. Now, this drink of old times shall be used for the betterment of our cause.” Cadance explained. Popping the cap off the bottle, more bubbles roared up in the liquid, nearly blocking out the sight from the outside of the bottle and making it look like the liquid was more bubbles than soda. She then proceeded to grab 4 big jugs and pour each to the brim with the Fizz Bomb Cola, passing them out to each of the girls present and then raising her jug.

“Bottoms up, ladies!” They all proceeded to chug their entire jugs of Fizz Bomb Cola in a matter of seconds, expanding their bellies to the near point of touching. They all eagerly awaited the effects of the Fizz Bomb Cola, then Cadance’s belly started rippling fast like a storming ocean, moaning like a pod of whales all sounding off at once, it even shook the floor a bit from how loud it was. This was then followed by Velvet's belly, squirming around harder and faster than a gazelle being caught by a cheetah, and it growled loudly like one too.

Spoiled Rich was not much further behind them. The blob of fat she possessed wiggled like jello on Heartswarming Eve, groaning like a pained animal. The sheer mass of the effect even shook her sides, making her feel as if she was no more than a rider on this wild rollercoaster. And lastly, Golden Brooch felt her insides turn wild. Every fibre of her being shook with vigor and wrath she hadn't felt in years. Her gut rumbled like an avalanche, rattling her frame and pulsating out from her belly button.

About 20 minutes of this passed, with each of them feeling immense pleasure from this, until at last it stopped. However, this had left all of them becoming more bigger because of it, with all of their bellies now officially touching each other.

“Well, I must say that was some incredibly strong stuff.” Said Spoiled Rich. The other two agreed to this sentiment. Cadance felt much the same, but she felt like something was missing.

“Well, that was agreeably, something I enjoyed very much. But I still feel like something is off. You three were into this when the trend first kicked off. What else did mares do to add to the experience? Surely, just some potion wasn't all you did, right?” The princess asked the veterans. The other three looked at each other while still holding their bellies. They nodded concurringly to their nonverbal thoughts and decided to give Cadance the rundown of how things went back in the day.

“Well, before this nifty little potion came to be in this day and age, us oldies had to find our own way to set our stomachs off.” Velvet explained.

“Since potion making was still a solely academic and professional career choice and basically no creativity was going into their creation, we had to do it the old fashioned way. Finding the most volatile foods known to pony kind to really ramp up rumble production. Having no experience with potions and to be honest, not wanting to go through all of that high class mumbo jumbo, we set off to the best ingredient stores we had at the time… Snack Shacks!” Golden said proudly.

“Being teenagers at the time and prices being much smaller than today, we had allowances big enough to get us a myriad of snacks, drinks and other things to mix up our own homemade ‘Potions’ from scratch. Bags of Chili Cheese Chips, fizzy soda, breakfast burritos… it was all we needed to not only fatten ourselves up, but get our guts riled up. It was almost like a competition to see who's belly could make the most noise.” Spoiled Rich chuckled. “But of course, no lady in her prime highschool years wanted to admit that we were just as gross as the boys. Especially one like me.”

“So we kept it on the down low, waiting until we got back home to start the fun.” Velvet said, whispering for dramatic effect. “It was such a fun time, heading into your bedroom or basement and just going to town on your own potions and watching as you expanded and your belly rippled, it was even more fun if you had a friend…or even a hook up to get in on it.”

“Hook up? So guys were getting in on this too?” Cadance asked, but she got head shakes in return.

“Not a chance, Cady! Any guy at that time would have run to the masses and made it front page news if we made our little kink public. No doubt, they'd use it as ammo against us to prove we're just as nasty as they are and prove that we had no right to complain about their habits. Even a slip up in conversation was something we couldn't risk! Plus, no guy would understand the pure pleasure of the trend, it was too coded to those with more… feminine assets. So, we mostly kept it to ourselves. And those hook-ups? Yeah, they were all lesbians. It was basically a ladies only kink that we developed over time. Only difference being it's a lot easier to do what we meticulously planned for with that fancy shmancy potion of… Bubble Regus or whatever.” Golden said.

“Borborygmus.” Cadance corrected.

“Right,” Golden replied as she continued. “As time went on and we got older, we had a lot less time for this kink as we all had to slim down for one thing or another. Family, College, Marriage and even workplaces. It’s been a really long time since we’ve been to a Belly Bash, but it’s been great to go to another all this time!” The other two nodded in agreement

“Too true, it's been ages since I could finally let myself go and feel the softness of my body press up against something. Celestia and Luna deciding to not so secretly join the fun motivated me to get back into it.” Velvet asked.

“Speaking of motivation… Cadance, you said this new body was accidental due to you sipping on some Poison Joke, right?” The pink princess nodded.

“Well, a little thing about that. Don't make it feel like an accident. If you constantly keep it in the back of your head that you got this from an accident, you dull down the pleasure of it all. Act like it was intentional, give yourself some confidence and strut your stuff.” The gray unicorn said.

“Also, just a tip from a baker and overall food expert, Go. For. The. Spice.” Golden said. “Every bit of heat you can pack into that pink pouch of yours, you'll be able to up your tolerance for the bubbly stuff, including that potion.”

“And round out that belly of yours as well. You may not know this, but there are actually spells that allow you to shape your body.” Velvet said, teleporting a spellbook in front of Cadance. Inside, she saw a diagram of a mare with lines around her body, indicating some sort of change.

“Use this every few bashes to even out your midsection. It's not just cosmetic, it can actually expand your insides as well. Do what you want! Give yourself a double belly, make it round like a ball. Flabby, bouncy, jiggly, make your choice.” Velvet got closer to her ear and whispered. “Also, don't tell anypony about this, but you can manipulate the sound yours makes with that spell. It's how I won a bet back in college.” Cadence promised to keep it a secret, the ladies all chattered for a little while more before they all went home. Velvet, Spoiled and Golden all slowly waddled out the door with how huge they'd gotten.

Cadence, after all this, was now writing down everything they said and also taking up the advice to now see this as her getting big on purpose. Now she could fully enjoy the pleasure as she then used the book to round her belly out, as well as adding extra fat everywhere else, especially her butt to make it more comfortable sitting during these belly bashes. Satisfied with the results of the day, she went to bed now thinking of how to make this trend become more than a trend, and more commonly accepted among society.

Author's Note

Well, it sure seems Cadence is now fully into this, as well as getting some knowledge and info from those who were there during the original trend, but what will she do to start making fat mares and noisy bellys a more common place in society? Who will she get involved with to help with her plans? Find out in the next chapter of: Hypno-Tummy!