Spike gets blasted by a magical spell that wasn't meant for him. It makes it impossible for ponies to realize things are different about him. He takes advantage. Weight gain ensues.

Manehatten MediTech, a huge research lab and medical centre designed to better the lives of everyone, sometimes in the most unusual of ways. Lapis Lake, a mare down on her luck will find herself at the spearhead of a new project as she volunteers for a revolutionary test designed to help those individuals of excess girth.

This story contains-
Fat- From chubby to immobile blobs.
Weight gain.
Gas- Belching.
Messy eating.
Poor attempts at rhyming.

After Gilda learns the secret for better scones, her GriffonScone stand is suddenly too small to handle the customers that swarm her every morning. So to help, she travels to PonyVille to get some help from the only person she remotely knows how to handle a business, a friend of a friend, Rarity. Though as the gryphon becomes more and more successful, her habit of taste testing every batch of scones becomes more and more prominent on her waistline.

Button Mash has gotten his hooves on a brand new game, and has spent all summer playing it!

Literally.

Now he's become a little chocolate ball of a colt, and his mother won't stand for it. However, Button won't stand for her attempts to put him on a diet either!

My first story of 2017! Hope you all enjoy it! Thank you to AstroZone for the idea!

When Rarity turns to a habit of occasional gluttony, Fluttershy is more than happy to support her. However, Rarity finds that her small indulgence may have a more profound change in her life...

Note: This is a weight gain fanfiction, so if that isn't your thing than you should probably not read this.

Of all the fields of business that one could choose to start a career in, very few are as cutthroat or as demanding as the food industry. It is a field marked by intense competition and razor-thin margins, where even the smallest error can mean the difference between success and failure.

But what if there was a way to avoid the stress and panic that can accompany such a demanding and competitive industry? What if there was a way to ensure beyond doubt that ponies would keep coming back to your business for your food, day after day? Would you not take it?

Well, one particular new entrepreneur decided to do just that, when he set up shop in the small town of Ponyville. He had an idea—an idea that would surely make his humble enterprise the most successful of its kind in all of Equestria. What follows is the tale of how it came to be, just what kind of effect it had on that little town... and how that little town became, in a certain sense of the word, a very big town indeed.

Wrote this on DA just about a year ago, and finally found the motivation to move it on over here. Enjoy!

After Big Mac makes a delicious snadwich, applebloom is forcing him to make more and more! She eventually has so many she becomes obese. Twilight comes to help and if she doesn't stop eating, some part of her body may EXPODE!! Can they stop Fatty-bloom in time?
Oh and I found the perfect cover art but it wasnt allowed since is was NSFW, though I don't see how.. It was just Applebloom eating a sandwich, and she was fat...? Oh well. Sooooo this one will have to do.

After a small spell explosion, Spike realizes that he can now do anything he wants without anyone taking notice. This ends up with him biting off more than he can chew.

Warning: contains weight gain

It's a new morning in the Crystal Empire, and that means it's time for Shining Armour to have breakfast. Lots and lots of breakfast.

Contains: fat stallions, eating, gluttony.

Having aced aerial manoeuvres, death-defying stunts and formation flying, Soarin now faces the biggest challenge of his Wonderbolt career... helping his morbidly obese commander get dressed.

Contains: Fat ponies, struggle to fit into clothing, crushing.