[NOTE: This story is a Patreon commission for Rainbow Glaze, and contains M/M themes including fat fetishism, feeding, sloppy eating, major gluttony, and incest. Also, the image was made by coatieyay on Derpibooru.]

Braeburn had always seen himself as a fairly healthy, albeit meek stallion. Especially compared to his muscular brute of a cousin, Big Macintosh. But despite his slender physique, he couldn't help but feel a tad jealous when he found out that Mac had a plump butterball of a boyfriend: Caramel. However, he then became intrigued when he learned that at the start of their relationship, Cara was actually around the same size as he was.

After a little back and forth with both of them as pen-pals, Braeburn learned about Caramel's desire to be fattened up, and how Big Mac was his affectionate feeder. The concept shocked Brae at first, but as the letters continued, the stallion couldn't deny how much the idea intrigued him.

And two months later, after confessing his desires and trying to grow big himself, Braeburn was invited to Sweet Apple Acres by his open-minded cousin. Since the house was empty, the stallion had enough time and privacy to create quite the buffet for the now-chubby Apploosan. But after Brae arrives, only time will tell how far his limits will go; both with his waistline, and with Mac himself...