Alexis And Her Expanding Ass

(A commission for Brandon)

[Alexis has a huge fat ass, but something keeps making it grow ]

[This story has slight giantess and ass expansion themes]

“I’m gonna go make some popcorn,” Alexis said, getting up from the bed and making her way out of the bedroom towards the kitchen. Brandon stayed under the covers and took the opportunity to check out his bottom-heavy girlfriend. Her ass was huge. She had always had a booty on her ever since they met, but it always surprised him how big it was. It seemed like every time he was about to get used to its size, it grew even fatter.

Alexis had her silky blonde hair currently tied back in a ponytail and had stripped out of her jeans to wear her usual comfy sleep attire: an oversized tshirt and panties, though the combination of her huge ass and baggy shirt made seeing her panties almost impossible. She had a relatively average build with narrow shoulders, a small chest, and thin arms. Anything lower than that however, was anything but average. Her thin waist flared out into wide hips, a huge ass, and thick thighs, giving her body an extreme pear shape.

Her massive booty jiggled and sloshed with every step she took out of the bedroom. Brandon did his best to keep from drooling. Once she was out of sight, he got to work scrolling through movie options for them to watch for the night.

After a few moments, she returned with a bowl of popcorn carried between her arm and one of her generously-sized hips.

“Welcome back, baby-girl,” Brandon said as she placed the bowl next to them and slid underneath the covers. Brandon placed an arm around her waist as she rested her head on his chest.

“Attack of The Zombie Bears?” Alexis asked, seeing the movie title on the TV. “That sounds like the absolute worst movie of all time,” she continued, turning her head up to look at Brandon and give him a playful smile.

Brandon took in her gorgeous face. Sometimes thoughts of her fat ass distracted him from remembering just how pretty she was. Even in the darkness of the bedroom, her smile was radiant. Her eyes were a deep blue that were so warm and inviting.

“It’ll be funny!” he retorted. “Like one of those movies that’s so bad it’s good!”

“Whatever dork,” Alexis replied, and turned her head back towards the TV.

Brandon started the movie, placed the remote down, and pulled Alexis in closer. After a few minutes, the movie was obviously just plain bad. Not bad in a funny way, just painstakingly uninteresting. Brandon found himself more interested looking at the girl huddled up against him. Even under the covers, the size of her ass wasn’t completely hidden. He ran a hand from her side down to her waist, and then felt the dramatic change in direction towards her hip. Finally, he glided his fingers across the smooth surface of her skin and grabbed a handful of her warm booty.

“Mmmm,” Alexis moaned, pushing herself harder against him. She looked up at him and smiled, then extended her head towards him for a kiss.

That was all it took. For the rest of the night, the movie was just a thing of the past as the couple started to make out. After a few minutes of passionate kissing, embracing, groping, and teasing, Brandon relieved her of her shirt and underwear. Alexis got to her knees and jiggled her huge wobbly ass for him seductively. Brandon gladly accepted the invitation and shoved is rock-hard dick inside of her. He savored the feeling of her ass cheeks clapping against his pelvis as he fucked her from behind.

Alexis was steadily moaning the entire time. After a few moments, the feeling overtook her and she screamed in pleasure as she came. Brandon gave her ass one final slap and then a few love-squeezes. He was about to cum himself when he felt like her ass was pushing back against his hand. But this thought drifted from his mind as he too finally climaxed inside of her.

The following week, Alexis came to his apartment to visit him again. Brandon welcomed her inside but noticed something…off. She was wearing the same pair of jeans as last week, but the button was undone. Was she gaining weight? Brandon looked her over as she took off her shoes. No, she hadn’t gained an ounce. Of course her ass was looking even fatter than ever. Was it possible she was gaining weight, but it just all went to her ass? Brandon supposed that was possible, but it seemed unlikely. Once inside, he noticed they were also almost eye to eye. Has she been growing taller too? He had always been a few inches taller than her, but this no longer seemed to be the case.

When she slid out of her jeans (with much more difficulty than last week), Brandon noticed something else. Her panties were now totally invisible from the back. It seemed like her ass had grown indeed.

“Alexis?” he asked, trying to figure out the best way to phrase the question.

“Has your ass been getting…sexier?” he inquired. Pulling her in for a kiss while grabbing two huge handfuls of her fat booty.

“Mayyybe,” Alexis said in a teasing tone enjoying the touches he gave her. “I noticed these jeans were getting too small for me. But since they’re never on me for long, I figured you wouldn’t care.”

“You figured correctly,” Brandon replied with a smile as they continued kissing.

As Brandon searched for this week’s film to watch for movie night, Alexis faced away from him and started to rub her titanic booty against his leg.

“Brandoonnnnnn” she teased. “Can I ask you something?”

Brandon raised an eyebrow and tried to fight getting an erection this early as she continued to grind against him.

“Can you…massage my ass?” she asked.

“Duh!” Brandon eagerly replied, giving her space to lay down next to him. She had never requested this before, but he of course wasn’t at all opposed to it.

“I’m just realing craving some physical touch and I like the way it feels,” she explained.

She laid down on her stomach, the width of her hips and ass were even more exaggerated as her curves protruded upwards from the bed. Brandon straddled her legs and went to work massaging her huge juicy ass cheeks. They were so soft to the touch, like two pans of bread fresh out of the oven. If he pushed hard enough, he could almost make his entire hand disappear inside the ocean of fluffy ass fat.

After a few minutes, Alexis started moaning again.

“Babe, I love the feel of your fingers,” she whispered.

“I love the feel of your fat ass,” Brandon replied.

Alexis smiled and continued to moan.

“Put them inside me, baby.” she said in a quiet, yet firm voice.

Brandon took one hand and wrapped it around her crotch. He took 2 fingers and shoved them inside of her. She was already extremely wet.

“OOOOH,” Alexis moaned as her entire body tensed.

Brandon started to finger her harder and harder. He used his other hand to grope and squeeze her ass as he continued.

“AHHHHHHHHHHHH,” she exclaimed as she quickly climaxed. Brandon’s smile faltered when he felt her ass grow underneath his grip. He stared wide-eyed as he saw it expand before his very eyes.

“Ahhh that was amazing,” Alexis said, starting to roll over onto her back. She noticed the puzzled look on her boyfriend and asked, “What’s wrong, babe?”

“Y-your ass,” he stamored, still trying to process what had just happened.

“What about it?” Alexis asked, starting to sound worried.

“It grew, like right when you came, I saw it grow,” Brandon said, realizing how silly he must sound.

“What…what do you mean?” Alexis asked doubtfully. “I mean, it’s been getting fatter, yeah, but like..”

Brandon cut her off. “No, I mean just now. I watched it. It happened right when you finished”

Alexis didn’t seem convinced, but smiled.

“Well, I guess you’ll have to make me cum again,” she playfully suggested as she pushed him down against the bed. She grabbed the hem of her shirt. Brandon noticed that it was only baggy around her sideways. Height-wise, it almost fit her correctly. She was getting taller! She pulled off her baggy t-shirt and sat on his crotch. Brandon immediately started to get hard as his waist was buried under all of that ass.

She danced and grinded against him as the weight of her mountainous booty shoved him deeper into the bed. Finally, she turned around and started messing with his belt.

“Get this stupid thing off,” she demanded.

Brandon was a little shocked. She had never been this demanding before. But he couldn’t say he wasn’t into it a little. With Brandon’s help, she slid the belt off and tossed it across the room, then got to work unbuttoning his pants. She pulled them off and went for his boxers next. Finally, his dick was in sight. She shoved it into her mouth, savoring its stiffness until he had a full erection. Then she turned back around, maneuvering over his dick. She grabbed one ass cheek with each hand and lifted. It took a fair amount of effort, but then she eased her vagina around his dick while he guided it inside of her.

She rode him like a rodeo horse, her ass clapping and sloshing like two overfilled water balloons.

“MMMmmmmmmMMMMMMMMM” she started to moan again.

Brandon had so many questions, and this sudden change in personality was distracting him from cumming.

“GRAB MY ASS!” she demanded, a little louder than Brandon was expecting. But he obliged and took a huge booty cheek in each hand as she continued thrusting herself up and down on him.

“OH FUCK!” she exclaimed as she started to climax.

She came, and Brandon watched as her ass started to grow again.

“Your ass! It’s growing!” he shouted. “Just like last time!”

“What? Oh!” she said, puzzled at first. She was really into the pleasure and it took a moment to remember what he was talking about.

She took another handful of her own ass again as it was still expanding, her eyes widened in disbelief.

“Holy shit!” she exclaimed. “It is getting bigger!”

The two paused for a moment, not knowing what to make of this situation.

“This is going to be fun.” Alexis said, breaking the silence.

—--------------------------------------------------------------------------------

The weeks went by and the two of them couldn’t be more excited about their discovery. Every time she came, they’d both savor the spectacle of her ass growing even more huge. She’d also grow a fraction of an inch every time too. Alexis had pretty much entirely given up on jeans. Sweats and yoga pants were the only things that could fit her, even though they only looked like capris on her long, tall legs. She did destroy a few pairs on purpose with her ass just because she could. When her first pair started to rip, Brandon fucked her through the hole the tear made, then watched as the clothing exploded off of her.

About a month later, Brandon was in the kitchen busily getting things ready for tonight's date. It was their 1 year anniversary after all, and he wanted everything to be perfect. He wasn’t the best chef in the world, but hoped that all the time he spent preparing this roast would show how much he cared about Alexis.

*DING DONG* went his doorbell.

“What? She’s like 30 minutes early,” Brandon mumbled to himself. He made his way over to the door and opened it. Even though he knew what was on the other side, he was still flabbergasted when he took in her size. She had to be at least 9 feet tall now, and her ass cheeks were big enough to dwarf exercise balls.

“Hey Alexis,” Brandon said, stepping to the side to let her in. “You’re a little early than we s-”

“BABE. I just couldn’t wait!” Alexis said, cutting him off.

“I need you. NOW,” she said as she started to make her way inside.

Her hips started to brush against the sides of the door frame until her ass was completely wedged inside of it.

“UGH, I can’t deal with this now. I’m so FUCKING horny!” she nearly shouted as she placed her hands on the doorframe in an attempt to fit her fat fucking ass through.

“Get over here and help me!” she demanded.

Without another word, Brandon took her hands in his and pulled. She had gotten a lot more demanding lately. It seemed every time she grew, she got a little more horny.

It took a lot of groaning and straining from the both of them, but finally she managed to fit her huge ass inside.

“Bedroom. Now,” she commanded as she waddled down the hallway.

Brandon noticed that she wasn’t even wearing underwear. He wasn’t sure if that was because her ass had outgrown every size available in stores, or if she was just that horny. Maybe a little of both.

Brandon took a few steps after her but stopped.

“But wait, what about dinner?” Brandon asked. “I started to make-”

“NOW!” she commanded, as she took his hand and pushed him in front of her.

Brandon obediently made his way into the bedroom and sat on the bed.

Alexis ducked under the doorframe and started to enter, but her ass quickly filled up the entire entryway. There was no way she was going to fit.

“Alexis, we might have to-”

“HUSH!” she snapped back at him, continuing to attempt to shove her massive ass further and further into the doorway.

“HELP ME!” she shouted.

Brandon got up and took her hands in his again, his bedroom door was a few inches narrower than this front door, and he didn’t think there was any way she could fit, but the pure lust she was exhibiting for him was exciting.

She strained and groaned even louder, the desire to be fucked motivated her to keep trying. Cracks started to form in the doorway, pieces of drywall and wood started to break off and fall to the ground.

“Alexis, the door, you’re going to-”

But Alexis just cut him off with a louder grunt and she forced her way inside. Her ass took out the entire door frame and it crumbled to the ground. Large chunks of the wall on either side also collapsed into a pile of debris at her sides from the power of her ass.

Finally inside, she got to work undoing his belt. She had gotten much faster at this and it was off in no time. His jeans and boxers quickly followed. She picked up his now naked body in her arms and actually tossed him onto the bed. God damn she wanted it badly.

Brandon couldn’t help but start to feel a little more turned on by her thirst. He started to stiffen up. Alexis grabbed as much of her ass as she could and lifted, but it was just too fuck huge for her to spread it herself. She readjusted and as much of her ass cheeks as she could with the entirety of both arms. Without needing to be told, Brandon followed suit. He felt like he was swimming through ass as he parted her booty cheeks with both of his arms as well.

Once again, he guided his dick inside of her. As she felt his dick penetrate her, she quickly slammed her ass onto his lap on the bed and let out a quick cry of pleasure.

It was too much, the bed came crashing down with a loud *SMASHHHHHHHH*

Brandon grunted as several hundred pounds of ass fat came crashing down on top of him. Everything below his chest was quickly engulfed in booty flesh. He started to lose feeling in his legs. Alexis didn’t hesitate for a second, then strained as she lifted her great weight up and back down his throbbing dick. Every time she crashed back down, Brandon yelped out a painful grunt. If her ass got any bigger, it might swallow his chest and break a rib. This thought only turned him on more.

“GRAB MY ASS NOW!” she demanded. Brandon struggled to move his arms from underneath her ass fat, only able to move them during her upstrokes. But finally he freed them and grabbed as much of her doorway-demolishing booty as he could.

“OH FUCK OH FUCK OH FUCK OH FUCK!!!” she cried out, as her pleasure intensified to amounts she never thought possible. His dick felt so fucking incredible inside of her, and the thought of his hands grabbing her ass made her shiver.

Brandon tensed as he felt himself starting to finish.

“AHHHHHHHHHHHH”, she screamed at the top of her lungs as she joined him. The two came together and stiffened until both slowly relaxed their muscles together.

Brandon watched as he not only saw, but FELT, her ass grow. It spread across his body, swallowing up more of his midsection.

“Oh god that was fucking amazing,” Alexis said, out of breath. “Ok, now what were you saying about dinner?”

The End