Sure enough, with another massive, stinking belch, you watch your flat belly heave up, inflating into a small, rounded paunch--but even as you stare at it, you can see it growing and expanding. You start to struggle more against the ropes, trying to free yourself, even as another fart explodes out your ass with another spray of shit all over the bed--your ass expanding as well now.
“Oh fuck boy,” Jack says, pinching your new flab, “That’s what I want to see! You’re gonna be one helluva nice fuck when we’re done here, I can promise ya that.”
“Ya fuckin’ bastard,” you say, fighting against your new, slobbier voice, “Ya ain’t never gonna fuck mah fuckin’ hole!”
“Now boy, I don’t take too kindly to that sort of tone comin’ outta yer mouth. Ya best watch yerself.”
“Fucker! Ya fuckin’ disgustin’ piece a fuckin’ trash, I ain’t ever gonna be like you!”
“A’ight, that’s enough outta you. Why don’t we find somethin’ else fer that nasty mouth a yers tah focus on while ya get big ‘n chubby fer yer daddy?”
Jack got back up onto the bed, and you expected him to fuck your face again. You...were secretly hoping that’s what he was going to do, but instead he turned around and backed his ass up to your face. The odor was foul--but your new nose craved it, pulling your face into the crack, sniffing and huffing at his musk and crusty hole, while your tongue slid out and started licking. No matter how hard you tried to stop yourself, you simply had no more control...and then the first of his shit shot slipped from his hole, right into your mouth. Your tongue responded to it like candy, or chocolate--every pleasure center in your brain lighting up all at once. It was soft, and coming out so quickly you couldn’t hope to get it all into your mouth, feeling it spread around his crack as you chewed and swallowed the paste down, and it clumped in your already nasty goatee and mustache, running down your chin and onto your chest, and he took what he could and smeared it across your growing body.
“Lookin’ mighty fine boy--got yerself a nice big gut, heavy titties, and a really nice, wide ass fer fuckin.” Finally, he finished shitting and stood back up, your tongue automatically licking your lips and face as clean as it could. Humiliated, turned on, you looked down at yourself and saw that he was right--you had put on a lot of weight--in fact, you looked like you might be even fatter than Jack by fifty or so pounds. Your gut wasn’t really gut, but a thick apron of flab hanging off your body, two moobs smeared with shit wrapping their way around your body to your back, thick love handles, a gunt starting to swallow up your cock, wide ass and thick thighs. But it was more than just the fat that had changed. You felt sluggish. Your arms and legs had lost a good amount of muscle, even as they’d chubbed up, leaving you weaker. But also, in the pit of your guts, a hunger the likes you’d never felt before. A hunger for food, yes, but also....also for filth. Musk, sweat, shit, dick cheese, cum, piss--anything. You needed it in you.
“I fuckin’ hate ya--what the fuck ‘r ya doin’ tah me?” you say, trying to keep from crying, “What the fuckin’ hell even am I?”
“Don’t fret boy--we ain’t done yet--we’re just gittin’ tah the best part.”