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Printed from https://shop.writing.com/main/interactive-story/item_id/2110264-Undertale-Overgrown/cid/2296994-weight-gain
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by Drakin Author IconMail Icon
Rated: GC · Interactive · Fanfiction · #2110264
Certain characters from the game Undertail are getting large in various ways.
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Chapter #4

weight gain

    by: Potato King Author IconMail Icon
Frisk blinks awake slowly, sits up in bed and yawns, stretching. After realizing it was a Saturday, they leisurely get up and get dressed in what's pretty much the one outfit they own, accessories notwithstanding. As they enter the hallway, they can smell something delicious emanating from the house's kitchen, and they can hear the floorboards creaking under the heavy bare footfalls of their surrogate mother, as she waddles about preparing the two of them breakfast. Toriel had always loved baking, as long as Frisk had known her, and as she'd lived alone for so long and had no one to share her creations with but herself, she'd developed an apparent love of eating as well. At least, Frisk drew this conclusion after Toriel ate herself into a state of obesity in the short time they've lived on the surface. Every day seemed to bring a new recipe she tried, a new ingredient she discovered, and several extra pounds. Of course, Frisk didn't mind at all, not for a second, as that only meant more delicious food to try, and more Toriel to hug and snuggle. Frisk excitedly entered the kitchen to see what their massive, beautiful, and consistently growing parent had decided to prepare for herself today-oh, and for Frisk (though she always ended up enjoying the hugely proportioned lions share of her work, which was fair considering she made it). Upon hearing Frisk enter, Toriel turned her head to see them, and smiles warmly.

"Oh, hello, my child! You're just in time to try the..." she turns and reads the title that was given with the recipe she'd found. "The "Heart-attack snack." You won't believe how much butter is in this!" She smiled once more, hoisting the tray up and resting it on her shelf like belly, just in front of her breasts. She waddled over to the kitchen table, working to balance the dish as her thick legs kick into the underside of her gigantic belly with every step she took, her steps too being made awkward by the multiple pounds of fat that had distributed themselves into her massive three-toed bare feet. She made her way over to the tables, the very floor she walked on creaking under her weight, and she sets the so called "Heart-attack snack" on the table, which creaked under the weight of the dish alone. She then sits her monstrosity of an ass down, sighing in relief as her feet were freed of the burden of carrying her tremendous weight, briefly wiggling and flexing her toes upon the release. The five chairs she sat in, all placed side by side just to contain her, and yet her ass still overwhelming them and spilling out enough for two more on each side and then some, groaned and bent in unacknowledged protest. Toriel exhales in relaxation, her belly easily filling her entire lap, spilling out past her knees, and pushing the table forwards a bit to accommodate its enormity. She then looked eagerly at Frisk, having to stretch her fat-roll covered neck a bit to see over her massive boobs.

Frisk sat down across from Toriel, who loomed large and was significantly wider than the table itself, and looked curiously at the monumental amount of food she'd set before them. Frisk could definitely see how it got its name. The thing looked to be some kind of bacon-sausage casserole thing, and true to Toriel's word frisk could see the entire thing glistening with butter, not to mention it sat in a pool of the stuff, had it slathered on top and in between every layer, and it looked like several layers were just made of deep fried butter if they weren't mistaken. It also looked like it incorporated three full grown pigs' worth of bacon, and two more in sausage. There were other ingredients holding it all together, but Frisk couldn't identify them as easily. But, the fact that this thing was probably larger and weighed more than Frisk themselves, combined with it literally saturating the air around it with fat so much that Frisk felt like they were full after just smelling it, they knew this thing could probably clog a whale's arteries, and Frisk couldn't wait to try it. More importantly, they couldn't wait to watch Toriel eat almost all of it, finishing whatever Frisk couldn't (because that's what she's tended to do of late). It was truly a wonder Toriel was still clothed, as the dress she was on the verge of bursting out of barely clinging to her form and splitting along almost all the seams, exposing puffy little bubbles of soft, furry white flesh. It was honestly a wonder it lasted this long, and Frisk had often suspected it was actually two of her dresses stitched together. She waited eagerly for Frisk to take their share, the table creaking as her belly fat encroached and spilled onto it. She waited for Frisk despite the obvious hungry glint in her eye as she looked at the caloric nightmare before her because she knew if Frisk didn't take their part first, she'd finish it all, leaving them none. Frisk did take a slice, a quite large slice by normal standards, though it didn't make a dent in the meal as a whole. After taking one bite, they were overwhelmed by the sweet sweet taste, they felt it sit heavy in their stomach, and they knew right there and then that there is no way they could finish their whole slice. This was the fattiest, greasiest, most decadent meal Toriel had prepared to date, and that's saying something. Frisk resolved to finish what they could, and give the rest to Toriel, as they took a second bite which made them feel like their stomach would explode.

After feeling stuffed to the limit after only three bites of the increasingly aptly named "Heart-attack snack", Frisk looked up at Toriel and was almost surprised for a second, before happily settling down their fork to watch the show. Toriel was absolutely loving the dish, having cut a slice big as Frisk's head, and greedily stuffing her face with it. As she quickly finished the slice, she went for a second, barely managing to reach her pudgy arms around her own bulk to grab the meal, and when she finally did manage she simply lifted the whole thing to her face, and in a show of remarkable gluttony, began to lap up as much as she could, getting grease, melted butter, and meat juices all over her first few chins. She used both chubby hands to grab all she could at once, and stuffed herself relentlessly, her form actually slowly expanding as she ate, mostly her belly, the seams on her outfit splitting more and more with every passing second, the five chairs bending and groaning more and more, beginning to splinter, and her expanding belly pushing the table further and further towards Frisk. By the time she dropped the tray, which bounced once off her belly before clattering onto the table, completely cleared of all its contents, everything was on the verge of giving way under her enormous body, the chairs barely structurally sound, and the dress little more than rags clinging together by a thread.

"Ahh...tha-BRUARRRP-at- excuse me, that was..." Toriel paused, and looked over herself at Frisk and their unfinished slice, that hungry glint in her eye returning. "Oh! My...my child, you didn't finish your slice!" Frisk simply nodded, and slid the plate more over to Toriel. Toriel licked her lips, and even as she reached out with one fat arm, trying to no avail to reach it over herself, she said "Oh, dear, no I couldn't...you mustn't starve yourself, dear!" Frisk only got up, and brought the slice right up to within her reach. "Oh- well...I suppose I can't go starving myself either, can I?" With that, she grabbed the slice in her greedy, pudgy, plump little fingers, lifted it to her endlessly hungry maw, dropped it in and swallowed it and- in one move, like magic, a sight Frisk might've considered themselves blessed to witness, Toriel finally exploded out of her dress, purple fabric flying everywhere, and broke all five chairs at once, landing firmly on her ass with an impact that shook the house's foundation and made Frisk literally jump off the ground a little, her belly covering the entire length of her legs so that only her huge feet were protruding from under her own bulk, furious jiggles cascading across her flesh.

She simply sat stunned for a moment, as if it hadn't even begun to occur to her she was gaining weight until this very moment, until she...
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