The clicking of buttons and the slicing of blades was heard as Rainbow Dash viciously tore through a hideous demon with the aid of a corpulent ogre on Rise of Tirek. She paused to take a look at the swamp green brute wielding a massive iron cudgel…  
She giggled as a particularly amusing thought. ‘Reminds me of when I graduated’.  
Much had changed since she was a student at Canterlot High.  
It all started a few days after Christmas when she had realised that she had gained weight over the holidays. Her once slim belly had swollen into a soft muffin top, her butt had grown an extra three inches wider, and her breasts had become far more prominent.  
That day, she had been incredibly nervous and stealthy, always trying to hide her wider frame. But it all went wrong at soccer practice…  
She had worn a makeshift corset during the game when playing against the rival team, but when somebody kicked the ball at her, it flew too fast for her to strike.  
The ball hit her in the abdomen and knocked her onto the ground, and when she got up…  
POP!  
POP!  
BLOOMPH!  
After this embarrassment, Rainbow had fled to the changing rooms to hide. She thought about all of the people staring at her chubby frame, all of those judging, stern faces disgusted with her. Coach Spitfire would surely kick her off the team for the extra weight.  
Then, she did something that nobody would ever imagine her doing… She started to sob!  
She couldn’t bear to face them after this discovery. What if they all laughed at her for being such a porker? What if she became the butt of every joke at the school? These thoughts had haunted her until the end of the day, when Spitfire approached her.  
She told her that shortly after Rainbow had zoomed off, she had sat down to try and process what she had just seen.  
She had thought about putting her through intense training, when a grey-skinned boy rushed over to her asking about what happened. It was none other than Lance Darkwater, her boyfriend! After a long conversation about Rainbow’s future, she had come to a definitive conclusion.  
During said conversation, Spitfire had informed Lance that Rainbow was 32 pounds over the weight limit and was now officially off the team.  
It seemed like the end of her life as she knew it. However, Spitfire explained that there may be a solution to this problem. From her conversation with Spitfire, Rainbow had learned that Lance liked girls with both big brains and big appetites. This thought lingered in her mind for a few seconds before she finally figured it out. Her boyfriend had a fat fetish! Perhaps something good could come of these events?  
That’s when Lance finally walked up to her, blushing madly as he nervously chuckled. Then, before he could say anything, Rainbow pulled him in for a deep, passionate kiss…
 
The following weekend, the real fun began. Lance eagerly fed the now ex-athlete an incalculable amount of cakes, doughnuts and sweets to keep her ever-growing tummy full. It was at this point that Rainbow fully embraced her new life and indulged her gluttony to her heart’s content. While she had been quite apprehensive about this, only doing it to make Lance happy, she quickly realised that she herself was enjoying the feeling of her excess body mass.  
Rainbow couldn’t help but giggle when she discovered this. She then had a moment of clarity; if she could not pursue a career as an athlete, the least she deserved was to be fat and happy.  
The weeks turned into months as Rainbow’s weight continued to skyrocket! Lance fed her only the biggest, heartiest meals to make her swell even larger than she already was. Every part of her body, her belly, breasts, rump, thighs, face and even her hands and feet grew larger and softer. Her new bulk led to several hilariously embarrassing moments. While they were at the diner that Pinkie Pie worked at, she sat on one of the stools, only to come crashing to the floor as an object that was made from solid steel buckled under her immense weight! And perhaps the highlight of graduation day was when Rainbow (Approximately 400 pounds at the time) bent over to pick up someone’s certificate and her jeans split wide open!
 

 

 
It had been three long years since they had graduated from CHS, and the once slim and athletic Rainbow Olivia Dash was no more, and in her place was an absolutely elephantine and gluttonous girl who looked like a living, breathing pile of blueberry jelly!
 
Weighing in at an incredible 1200 pounds, Rainbow was even wider than she was tall! Her massive belly hung past her crotch and was so large, that it always touched the floor when she sat down. It was almost completely round, save for her deep, cavernous navel. Her voluptuous breasts were both the size of small pumpkins, contained within a hot pink bra. Her colossal butt cheeks were easily as large as yoga balls, with the plushness of couch cushions. Her rump was clad in a sizeable pair of hot pink panties that matched her bra. They hugged her butt in just the right way that they were always comfortable to wear, no matter how big she got. Her arms and legs were as thick as tree trunks, her upper arms and thighs spilling over her knees and elbows, burying them in a thick layer of fat and creating divots where they should have been. Her hands and feet were thick and chunky, which meant that every time she cupped her lover’s cheeks and pulled him in for a kiss, Lance was always graced with her wonderfully soft grip. Her fingers and toes had also plumped up quite a bit, making them look a lot shorter and stubbier than they actually were. Her face, like the rest of her body, was round, plump and soft. She sported an immensely thick double chin that had completely engulfed her neck, forming a cute neck roll.  
Of course, her new lifestyle had forced her and Lance to adapt. Her lover insisted that despite their mutual adoration for her immense girth, she should at least get some proper exercise to stay healthy. The last thing Lance wanted was for the girl he loved to die from diabetes or a heart attack. The guilt would drive him to suicide! So, baring her boyfriend’s wisdom in mind, Rainbow regularly performed vigorous stretching exercises to stay active and healthy.  
Much to Rainbow’s delight, she was surprised to find that even at a seemingly-impossible size, she could still move under her own power! Even if her once brisk walking pace had been reduced to a slow, lumbering waddle, and she looked rather comical whenever she tried to run.  
Rainbow reached into a bag to grab the last handful of chips from it, while she held a bottle of Comet Cola in her other hand. That was another thing about her rapid weight gain; as her size increased, so did her appetite. In the span of three years, she had gone from a slightly below-average intake of 1800 calories to an intake of a whopping 14,000 calories a day! As she finished off the bag of chips, she delicately licked the salt from her plump fingers and wiped her hand with a tissue. The gluttonous girl then grabbed a saucer-sized chocolate chunk cookie from the table and took a bite out of it. The sound of Rainbow’s happy chomping and chewing would’ve been music to Lance’s ears as he snuggled up to her soft belly.  
The thought of her boyfriend smothering her with love made her smile as she took a hefty gulp of her soda. Then, she felt a bit of internal pressure, and…  
BWWWWWWWWWAAAAAAAAAAAAAAAAAAAAAAAAARRRRRRRRRRRRRRRRRRRRRRP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  
Rainbow let out a thunderous belch, sending her body wobbling and jiggling about like a pile of blue pudding!  
The rainbow-haired girl let out a hearty chortle, which made her enormous, blubbery body wobble and jiggle even more.  
“Being a blubberball is nice when you have a boyfriend who loves it as much as you do~!”
 
A lovely piece of artwork that was drawn for me by the goddess of WG art - NeonGoThic! Thank you so much for drawing this for me, buddy~!
 
The story was written by yours truly!