For an anonymous user on Furaffinity
 
“Ah, there you are, Twilight!” Leaning back against her locker, Twilight looked up from her textbook as her larger and more heavy-set friend, Rarity, waddled down the hallway. Her prominent pudge wobbled with each hurried step she made.
 
“Hey, Rarity. Why did you want to meet up so early?” Twilight then gasped excitedly as her eyes suddenly lit up, “Did you finally want to use my 3-D biology flash cards?”
 
But Rarity coyly rejected. “Oh, no. As… um… exciting as that sounds, I was hoping you could help me.” she says as she presses a chubby hand into her chest.
 
“Oh, of course! What is it?” Twilight straightened up as she pulled slightly on her snug top.
 
“Well, can’t you tell? Just look at me!” Rarity stepped back to give her friend a better view of her massive figure, nearly 700 pounds of it. At first, Twilight felt tempted to make a sarcastic jab at the obvious fact that her friend was about five times the size of her own comparatively smaller body. But as she stared a bit longer, it hit her.
 
“Have you lost weight?” Twilight asked as she eyed Rarity’s outfit, looking surprisingly looser than usual.
 
“Yes! I don’t know why, but I’ve barely eaten a thing since yesterday afternoon,” Rarity explained as she adjusts a bra strap. “And since I woke up, I’ve been losing quite a bit of weight.”
 
“You’re not sick, are you?”
 
“I don’t think so. I’m feeling rather off today, but I wouldn’t say that I’m sick.”
 
“You know, it’s funny,” Twilight pondered, “I’ve actually been feeling pretty hungry lately. I had a huge dinner last night, a midnight snack, and a big breakfast this morning. And I’m still feeling a little hungry.”
 
Rarity couldn’t help but giggle at her friend’s minor expense, “No offense, but it’s a bit noticable.” She pointed towards a sliver of Twilight’s chubby belly poking out from under her shirt.
 
“I know!” Blushing, Twilight tugs her shirt down to cover up her chubby belly, only for her loves handles to peek out from behind. “I’ve been eating so much, now I’m getting bloated!”
 
“At least you have an appetite,” Rarity retorts as she fixated on fiddling with her outfit, which started to look a size or two too big for her. “I swear, I feel like I’m losing weight as we speak.”
 
Meanwhile, Twilight still fumbled with own ill-fitting clothes, now becoming less annoyed and more terrified as her belly fat was slowly expanding. The rest of Twilight’s body began to fatten up, spreading to her chest and rear, then her arms and legs. Even her face began to swell up. “Rarity, I’m getting fatter! And you… you’re getting skinnier!”
 
And just as she had said that, Rarity felt pieces of clothes and garments beginning to slide down her shrinking body. In a panic, Rarity held her baggy clothes up, feeling far lighter than just moments before. “Quick! To the restroom!”
 
The two girls made their way to the nearest restroom, still not used to the sudden changes in their bodies. Rarity was thrown off by how much faster and more agile she was becoming, but she was able to reach the door first. Twilight, however, still had to adjust to the extra hundreds of pounds she was piling on. “Hurry, before anyone sees us!” Rarity hissed as she held the door open for her growing friend.
 
“I’m trying!” Twilight grunted as her walk grew into a tedious waddle. She pushed forward, feeling her enlarging flesh quaking and bouncing along. She pressed her hands onto her quickly developing belly, hoping to at least minimize the constant movements. But it didn’t seem to do much. “Ugh, I’m getting so big,” she panted as she finally made it into the restroom, thankful she didn’t have to be squeezed through… yet.
 
Another minute or so pass as they both stood in the middle of the room, watching their bodies shift in weight and size. The only sounds were the heavy breaths of Twilight as her belly ballooned out and over her knees, along with the occasional creaks of her tight clothes. Rarity, still trying her best to hold on to her own clothes, felt her flesh pull and shrink into her slimming figure, bringing her down to a size she hadn’t been familiar with in a long time.
 
As it finally stopped, the two girls stared at each other until Rarity finally broke the silence. “Maybe I should call Sunset.”
 
Twilight’s massive belly growled hungrily before asking, “Can you ask her to bring some food?”