Okay, but now I am imagining Mark post-stuffing from his AU versions, having digested the immense load and awkwardly feeling his body spilling out another inch or two all over.
Him having some alone time and deciding to stuff himself again, unable to help himself, expecting that same overfull feeling he has grown used to... Except he's still hungry when he has eaten his "normal" amount of food, and he can't help but continue stuffing his face, with his stomach so stretched out from the previous force-feeding that it takes far longer for him to feel overfull
imagine getting stuffed so hard, you put on an inch (or two <3) the very next day from the sheer amount of calories... struggling to tuck all that extra flab into his suit. not like he isn't used to outgrowing clothes by now, it's just never been this quick before. everything uncomfortably snug, rubbing more than usual.
and oh, he's stuffed himself plenty of times before, but last time pushed him far beyond his limits. he didn't think it was possible to eat that much in one go. just a nauseating amount of food. he definitely won't be going that far again... but binging is still a comfort to him, despite it all, and when he finds the time to do so, he takes it.
he buys all his favourite foods and lays them out, struggling to contain his excitement. he plows through them in record time. it should be enough, but somehow he still feels... empty? that heavy, tight feeling he craves is missing. okay, he HAS gotten bigger, maybe his appetite has just grown with him. so he goes for another round. at first he's hesitant about buying so much food, but reasons that he can just have any leftovers tomorrow.
so he keeps eating, and eating, until there's nothing left. and... he's still hungry. it's like no matter how much he eats, his stomach keeps stretching around it. frustration mounts. he decides he's not going to stop until he's full, no matter how much food it takes.
what was supposed to be a couple hours of eating turns into a full day. without even realising it, he's eaten about as much as his variants forcefed him, maybe even more. but he doesn't care; he's finally full enough to be satisfied, the weight of his belly pinning him to his bed, the warmth in his gut lulling him to sleep. still, there's a question lingering in the back of his mind, as he starts to drift off...
how big is he going to get if he keeps this up?