Fat.
It's what you've known your whole life.
Couldn't exactly help it, your appetite never seem to be sated and you weren't the most active. Resulting in a physique of a giant, walking butterball. A fleshy sphere with four legs, a tail, and head stuck on it. Everything about your visage was thick. Face, cheeks, legs, everything. Most obvious however was your staggering large belly. Like you carelessly swallowed a exercise ball. Never appeared to sag or get flabby, but staying perpetually full does that to oneself.
Still, socially you had a nice life. No pony gave you flak over it, and even encouraged it occasionally. Name's like "Bottomless Pit" or "Garbage Disposal" where titles you had pride in than shame. Relishing in the attention whenever there was a eating competition or 'test' of how much one could consume. Usually you'd be victorious to the dismay of others that foolishly thought they could stand up to your 'might'. Even with your rotund disposition possible interests for a special somepony weren't in short supply. Exuding confidence against being a
Lately though it was taking it's toll. Made a habit of taking annual 'trips' to Sugarcube Corner and engorging like mad. Anything you could consume found itself in your massive barrel packed with other unfortunate foods. Pastries, cakes, all kinds of baked goods the Cakes could churn out. All of it gone into your thickening, ravenous maw. You didn't even bother to chew smaller pastries, instead swallowing them whole.
Entire trays of cookies, cupcakes, and muffins. Gone. Massive three layer cakes that fed a wedding reception. Destroyed. Doughnuts filled to bursting with cremes, jelly, and other sweet fillings. Obliterated.
Though today's 'meal' was really doing a number on you. Despite a expansive stomach like yours, the pressure gradually dissuaded your hunger the further it went. Breathing reduced to heaving, deep breathes. Waddling came to a crawl. Even your stance widened with newly added girth to your cauldron-sized tummy. You'd be surprised if it didn't scrape the ground after this.
Ending with fear that you'll explode from one more bite, you slowly take leave. "Over doing it" was far from how you felt while in a sugary-addled stupor.
Fat. No, Fatter.
Fattest. This was possibly the fattest you've ever got.
What exemplified your notion next was how your overly packed, taut abdomen wedged you between the door frame. Stuck. You binged to the point you couldn't slip through a door. Sucking it in
Summoning whatever strength you could, you stick both front hooves either side of the outer frame and push. Little by little your grossly overburden belly gave way