#fat!derek

[sterekchub]

2026 Summer of Cake Prompt 2

Challenge 1: ~100 words and 1 prompt Also posted to AO3: Here Prompt: Too fat...for the beach towel Surprisingly, the sinfully tight swimming trunks didn’t mean their demise from Derek’s voluptuous backside. Instead, they met their end at Derek’s  slightly snug beach chair, if it could be called a chair anymore, given that it was no different from sitting in the sand, having surrendered to Derek’s weight and sunk down so far. When Derek stood up, the shorts snagged on the metal frame and a forceful tug didn’t dislodge them but ripped away the already strained fabric. 

Completely ripped. The chair wasn’t wide enough for Derek, forcing his love handles to rest on the arms of the chair, and his hips to fill out - and side rolls to push out - of the chair. So when the metal snagged his shorts, they took enough of a chunk to reduce them to two jagged pieces. “Told you last year’s shorts wouldn’t fit.” “The shorts fit. Your flimsy chairs were the problem!” “Work fine for me,” Stiles laughed, pointing out all the extra space he had on his. “Shut up and pass me a beach towel,” Derek muttered. Stiles looked at him skeptically. “The beach towel. The regular, standard size towels.” “Yes, Stiles. The beach towels. The ones we brought to the beach. I can’t walk back to the car like this!” “Oookay.” He handed over a beach towel and watched in amusement as Derek went to wrap it around his waist like it had any chance of fitting. It didn’t. Even when Derek tried to move it under his pudgy middle, neither ends of the towel came close to meeting, and certainly didn’t hide anything. “We have to start going to buffets more. Can’t be that many more pounds before your belly hangs low enough to cover you!” “That doesn’t help me now,” Derek groaned. Which - wasn’t a no. 

Out of desperation, or possibly the realization that Derek would rather cover his front and risk his ass being on display as he started his embarrassed waddle back to the car, he flipped the towel around. He had to hold both sides of it behind his back, too small to even come close enough that Derek could hold the ends together with one hand. Stiles took a photo of Derek’s pale, basketball sized ass cheeks bouncing on full display as they walked back up the beach.

[chubby-derek-and-friends]

Jock Derek Comic - 1

Jock Derek Comic - 1

A new weight gain comic, featuring Derek.

[modestfuckup]

To Be Wealthy in Times Like These

Kinktober 2021

Teen Wolf | Sterek | 1/? Prompt: Fatness as power status Fat!Derek, Rich!Derek, Skinny!Stiles, Servant!Stiles,

Fatness is a luxury only few could afford.

After the fall of the global market, people starved. Food became scarce, or if it wasn’t scarce it was expensive. The droughts and the flooding made it impossible for most to grow their own food, and agriculture across the world was at an all time low.

Thinness very quickly fell out of fashion, mostly because those who could afford the fashion found that having and eating an excess of food was the only way to flaunt their money.

Beacon Hills was a town like any other. There was one family that managed to escape the hardship that had befallen everyone else in the area: the Hales. Led by their mother Talia, the Hale siblings were among the richest folks in the state, let alone the country at this point. Many formerly rich had squandered their money on food-and new clothes to fit themselves-quickly, but the Hales made it last.

[achubbydumpling]

Snag a 'Mallow

Get Beached 2021

Prompt: Too Fat for the Kayak

“The weight limit is 250 pounds.” Stiles scoffs. “Not a problem. Right, big guy?” He turns to Derek who pointedly doesn’t look back.

“No way.” Stiles gapes. “You were just above 200 at the beginning of the year!”

“Summer’s almost over and it’s been a few months.”

“Holy shit, 50 pounds since January?” Stiles couldn’t keep the excitement out of his voice.

“I weighed 212 on the first, so it’s maybe 40 pounds.”

“So, if you’re barely above 250…”

“I’m not putting the limit to the test.”

“Oh, so firmly above 250.” Stiles grinned. “How about brunch instead of kayaking?”

(I'm also on AO3)

[sterekchub]

Mutual gaining Sterek where they’re so large that neither of them can reach the wheel of the car past their stomach, though both insist they still can, and sex is more mashing their stomachs against one another and rutting against their fat since it’s too much work otherwise. Theyre at the point where they need a loveseat each for themselves with a funnel attachment to constantly drink from between meals since their appetites are just so insatiable. They initially argue over who has to change out the shake after they run out, but after getting even bigger the become too lazy and just have someone else come over to do it for them. Having others help then only exacerbates their laziness and furthers their rapid expansion.

They're the couple who doesn't start off trying to gain. It's all lazy, content relationship weight. Derek cooks on weekend. They get pizza or takeout most days after work because neither one feels doing dishes. There's more than once when they're not nearly 'too big' for sex, but too full. So instead it's mutual hand jobs on the couch with greasy hands. They eventually have to talk about it. When it's clear the relationship weight has been pushing into "intentional gains." Because Derek and Stiles are always competitive, eating is no different. Who can finish the last egg roll. How many pizza slices can they each eat? How many tacos before one of them has to tap out? They agree to hit an nice, even number. 350. Big. Properly obese. But nothing...too much. Reasonable. Just two out of shape guys who involve food a little too much in their relationship. Except it doesn't stop there. A little experiment in gaining changes to them becoming full on gainers. Pushing themselves to eat more. Who can reach 350 fastest. Derek will wake up to Stiles chugging a shake in bed. Stiles catches Derek stopping for fast food before coming home from dinner. They're both comparing- whose gut is biggest? Whose thighs are widest? Who has the roundest ass? Until someone hits 350. Which...they agreed to stay around there, but then it becomes "First to 400?" Which...still isn't enough. Everything is a competition. Stiles celebrates being the first one to pop a button and Derek says so what - the seam of his pants split down the middle today. Derek gets stuck in doorway, Stiles needs help unwedging himself from behind the drivers seat. They start having competitions daily for fewest steps taken. Most calories consumed. Fully kink first- practicality of their sizes second. Their texts are just proud milestones. Couldn't fit in an office chair. Derek too fat to fix cars and sells off his shop. The 'my dad thinks I should go on a diet' or the 'Peter thinks you're a bad influence on me'. When they both start getting tired out- because no matter what position, all that thrusting is a LOT of exercise - they're not bothered. Stiles will jerk off on the couch as Derek tells him to keep eating. Keep up. He's never going to be a fat pig like Derek if he's not eating until it hurts. They could get off on the dirty talk and teasing alone. Or taking huge, overflowing handfuls of blubber and shaking it, pointing out every new roll and stretchmark and wondering how much bigger they're going to get. They'll be the couple in bed next to each other-belching and huffing in their rare breaks from feedings - "How many inches is huff my belly wheeze now? Bigger urrrp than huff his?"

[sterekchub]

Okay, Stiles is a gainer, but Derek is a civilian. He’s not really a feeder or anything, be he is kind of a caretaker so he has a tendency to over provide when it comes to food.

Except Stiles is also a terrible influence, so when he’s eating, he’s encouraging Derek to eat.

So by the time Stiles is a big, jiggly 300, Derek is a plush 260. By the time Stiles is breaking chairs, Derek is making them creak. By the time Stiles is wearing 4XL, Derek is outgrowing the 2’s

And fuck if Stiles isn’t into a big soft werewolf boyfriend.

"Derek is a civilian" cracks me up. Like he ignores the 101 signs that his boyfriend is both a feeder and a gainer.

Stiles is always eating. Excited to announce 'doesn't fit me anymore' as he and Derek are dropping off another bag of clothes at the thrift shop (and then going to lunch). The way Stiles orders enough food for at least 3-5 people. Or that he constantly tells Derek to have more. Try it! Maybe they should order another round, it was too good to just have one portion.

Plus, Derek finds he likes overeating. The warm, flushed feeling it brings. That satisfaction of feeling heavy and sated. A little incapacitated by food, the lazy, lethargic state that means he and Stiles aren't going to do much but hang around the house or spend half the day in the bedroom. The feeling of being gluttonous, that occasional treat that Derek has just been indulging in more and more often.

He notices Stiles getting fat. He tells himself he doesn't care, but that doesn't feel…entirely right. It feels wrong to admit he likes it. But Derek has been paying more and more attention to the stretchmarks appearing on his boyfriend. Tracing them and wondering how many new ones will appear. Or that there's just so much more of Stiles now. The way his upper arms wobble when he's talking animatedly. How his love handles and belly are so easy to grab when Derek is fucking him. How his thighs and softened chest and almost every part of his jiggles ever so slightly when he's bouncing on Derek's cock.

So Derek isn't oblivious to his own gain, but he always seems so much smaller in comparison. He's gotten used to Stiles starting to not be able to run his mouth or hands over his abs, and instead is grabbing at every flabby part of him. More than just being passionate during sex, because Stiles constantly has his hands pinching and grabbing and squeezing Derek every moment he gets.

(Really, Stiles toying with his fatpad while he's sucking Derek's cock is almost a religious experience, that embarrassing "where did that come from?" moment when he realizes he actually HAS the start of a fatpad, followed by the "who cares" moment because it feels fucking good)

It probably takes Stiles hitting 300, and happily making Derek step on the scale to see how he isn't all that far behind - for Derek to realize this is….something.

When he's standing in front of the mirror, holding his belly up with both hands, realizing he has enough to take a solid handful of blubber, then standing sideways and noticing he's got love handles. Starting to get back rolls. His ass is solidly expanding out and sideways.

He stands in front of the mirror long enough that Stiles had a chance to slip into their bedroom unnoticed and sit happily on the bed to enjoy the show.

"Don't let me stop you."

"I guess 265 sounded smaller than it looks."

"Just wait until you hit the big 3-0-0 club with me!"

Derek looks down at the very, very small glimpse of his toes he can still see. "I didn't realize we've gotten so fat."

"I hate to break it to you, but I think we passed 'fat' like 100 pounds ago, dude. Didn't seem to bother you then."

"I thought it was relationship weight."

Stiles laughed at that. "I think you can only call ten, maybe twenty pounds being relationship weight."

"So what's the excuse for the other…." he paused to do the quick math. It was…a lot more than he realized. He wasn't at Stiles level of extra pounds, yet, but he was closer than he thought, and decided not to think about the double, nearly triple digit number. "…for the rest?"

"It's called getting fat and liking it. Come on, you like eating. You clearly like the results, because I gotta be honest - you seem pretty into being able to grab handfuls of my belly, Der."

He springs off the bed and stands next to Derek, staring at themselves in the mirror. "Plus, you're so close to catching up to me, you aren't going to stop now, are you? I wanted us to hit 350 by next year!"

Stiles gets a growled, "You were doing this on purpose?!" from Derek, before he finds himself being tossed easily onto the bed, Derek practically pawing at him, grumbling that Stiles could have TOLD him about this, because of course Derek isn't going to stop.

Stiles will bring up his actual gaining goals for them later. When Derek has had time to…adjust. (Aka Stiles showing him so, so many websites and videos and shown him the kinky gainer/feedee life they could be having!)

[sterekchub]

So I’ve been playing a lot of video games recently and I keep getting little achievement notices that pop up, and all I can see in my head is Derek getting addicted to some cursed video game that causes him to either get hungry all the time and/or to gain weight. So his phone will vibrate and it will have a notification from the game like, “you’ve reached ‘eaten the whole pie!’” Or “congratulations, you just got ‘can’t see your toes’!” And then eventually, “wow! You’re now ‘wider than you are tall’!”

I’m so sorry to take your idea and go “I love, but I’m going to change it!”

But it reminded me so much of those tiktok ads I keep getting- the little pocket pet or whatever who reminds you and rewards you to do the dishes! Gamify your chores! You went on a walk! It’s happy!

Derek somehow gets it on his phone. He swears Stiles did it, but he denies it completely. The fact the little avatar isn’t a cute animal but is a little Chibi version of himself in the 2000s computer game styles doesn’t make that a plausible denial

He only notices when it pings “you skipped breakfast! Time to eat!”

And continues to ping- despite his ringer and volume down and off- until Derek grabs something from his fridge to eat.

It goes like that for a week. Reminders to eat. Hydrate! It’s annoying, but…Derek really could do with reminders to eat, sometimes.

But then they get more specific. PING you should get a burger today!

Is the damn thing sponsored?

PING indulge your sweet tooth with some chocolate today!

He can’t delete it. Or figure out how to change the settings. Or figure out how it KNOWS what he’s been doing.

But it will constantly go off- even if his phone it shut off. If his phone is 3 rooms away? He can still hear it. If he leaves it in his car while he’s in the house? Same thing

It’s easier to just, follow the damn thing.

But then it starts getting…more aggressive.

You didn’t eat enough calories. Eat more.

You need to eat more fat today- a Burger King coming up in .2miles.

“Stomach capacity at 30%. Eat a snack.”

“National milkshake day. Order 3 to celebrate!”

“It’s Pi Day- we’d say have 3.14 of a pie, but let’s round up to 4!”

“Uh-oh, tired? You walked too much today- sit down and relax!”

“Congrats! You’ve hit a new milestone: Morbidly Obese!”

“Save energy- take the elevator!”

Then the countdown reminders, always on his lock screen.

“8 more days until your pants won’t button! Time to go shopping!”

“2 hours until your button pops.”

“512 days until your kitchen chair breaks! Here are recommendations for heavy capacity replacements!”

“4 years, 39 days, 3 hours until immobility.”

Then it starts to order things for Derek.

“You deserve a treat, door dash ordered.”

“Hydration inadequate, funnel ordered.”

“Sweet tooth cravings increased? 10lbs of chocolate ordered.”

“Looks like you’re stuck…. Calling Stiles.”

“Destination is 1 block away- cab will arrive in 6 minutes.”

Or the days it just screams at him EAT EAT EAT EAT and doesn’t stop until Derek is slumped on the couch, rubbing his massively distended middle, surrounded by the wrappers and grease stained bags and boxes of his gluttony.

It somehow knows when Derek isn’t completely full. When he has enough just for that one more bite to push him over the edge, and then it stops.

For less than an hour, before it’s telling Derek “You need to stretch…your stomach capacity! Grab the funnel!”

[sterekchub]

Okay, Derek is a recently drafted professional athlete. He’s hit, he’s fit, and he’s a real asshole. Stiles is…for lack of a better term, a fixer. People hire him to solve problems. And for Derek’s new teammates, Derek is a problem. So Stiles gets hired to ruin him.

At first, Stiles does his best to try and see Derek’s softer side. Hes not immune to Derek’s good looks. But every day Derek is more and more of an ass, so Stiles finally breaks down and decides the best way to ruin him is to turn him from a swimsuit model into a land whale.

okay I did have a full plot writing then tl;dr myself and umm now this is 100% just PWP and not really linear I'm only like - 10% sorry.

Stiles joins as the team nutritionist. Gives him a chance to see the dynamics, work with the team. See if maybe some therapy or counseling or team bonding would work. It's clear Derek is NOT interested in it.

But he does find the team is very willing to go along with Stiles' offseason plan. To get Derek…in shape for the start of the season.

It starts with an entire team holding Derek down, as Stiles straddles his waist and pours shakes into his mouth. Tells Derek to relax- the sputtering and trying to talk only make this take longer!

They use the photo as blackmail- taken with angles to make it look like some young, 120lbs skinny thing is holding down the star player, sporting a food baby, with a funnel in his mouth. Not exactly illegal- but embarrassing enough Derek doesn't want it out there.

Enough that he follows Stiles' diet plan. Bacon and sausage and pancakes and syrup for breakfast. (Protein, and sugar is nature's caffeine!)

Shakes. During their "training" which keeps being interrupted by broken machines or a fire alarm or sprinkles going off. Weird.

Carbo loaded lunch.

Shakes

Dinner which is heavy and hearty and Stiles wants to see Derek rubbing his belly in fullness before he stops serving him more.

Stiles is offering himself up as personal chef and….slightly a personal whore. But hey, Derek is hot, the hate-sex is great, and Stiles gets personal, up close hands on confirmation of how his diet is working on Derek.

The workouts get fewer, because Derek is always too stuffed to bother with them. He shows up at team practice, but it's always after Stiles has served him a massive lunch.

Running gives him a stitch in his side, and he feels like throwing up. So he sits on the bench…where Stiles ever so helpfully pats the slowly bulging belly and tells him there are snacks to be eaten. ~~~

Every so often (really, every time the team is together), Derek will say some cocky, bullshit thing that has the team all gathering around Stiles after, telling him they need to "adjust" his attitude.

It normally always ends with another force feeding.

But as Derek grows, the team gets more taunting. Wants him on all fours, a cock buried in his ass while his head is buried in a bucket of food. The team jeering and demanding he oink like a pig or moo like a cow.

Even Stiles has started to take advantage of their regular hookups. Derek wants to get fucked? Stiles wants him to eat first. He doesn't care if they just had dinner, he wants that table cleared.

He wants Derek to be too full to ride him. So out of shape that somehow, Stiles fucking HIM, makes him out of breath. ~~~

There's one point where Derek goes to his coach. But the coach shrugs and tells Derek "I've been trying to drop your contract anyway. Might as well ride this out and get the paycheck."

He's got younger athletes with less ego that will be a better fit. Turns a blind eye to whatever his team is doing. Benches Derek more often. And let's the team use the empty room next to his office for….whatever they're doing. He chalks it up to team bonding. ~~~

The office becomes the official feeding pen. Where the team crowds up behind Derek and tells him "time for your feeding, piggy."

He gets weighed. Measured. Then the team blocks the door and all watch as Stiles feeds him. Throwing out their comments as he eats, face burning in arousal and shame. "I hope you burst." "Don't think they make a uniform in your size anymore." "Let's see how long it takes him to run the field now." "Our new team mascot- the Hog!" ~~~

Derek's ego is the last to break. He still refuses to admit he's now longer the most fit on the team. So it becomes another commonplace thing - Derek agreeing to bets he's never going to win.

Most pushups? Loser gets the funnel….

Race across the field? Loser is eating as many chili cheese dogs as they can get.

There's no chance Derek could win. Not when he hadn't worked out for over two seasons, or when his thighs rub together with every waddling step, and his belly wobbles with any movement, touching the ground as he even attempts a pushup. ~~~

Stiles finds a new activity for the games. Derek sits in the dugout, ass spreading out to take up the space for at least two players, watching his team with disinterest.

He's almost willing to take up Stiles' proposed game. Beer and hot dog for every point their team gets. Burger and fries for every point the opposing team gets.

Derek finds he's got more team spirit when he's a little drunk and stuffing his face.

Stiles jokes about his uniform. His team have blood, sweat, dirt on them after a game. Derek's has ketchup, beer, cheese, and possibly a missing button or two. ~~~

Derek at the end of his contract getting offered a new one - official locker room hog. Show up to trainings, watch his team workout and stay fit, while Derek stuffs his face and trains for immobility.