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You finally got them. A pair of the most sought-after booty shorts on the planet. On the outside they are nothing special, red incredibly short simple shorts. The only visually distinct thing was a black line of text which said, “cum here.” You usually weren’t the kind of girl to buy into all of that clothing brand elitism with brands like superb or cuchi, you’d wear whatever hung to your curves the best and made you look sexy. But these shorts had powers and you knew it. It’s what made them popular. Something about them, you weren’t quite sure, gave them the ability to make your ass swell up when wearing it. All it needed was a little cum. You needed to feel it for yourself, however.

You quickly through off your old clothes, even taking off your panties and throwing them to the ground. It always made you feel a little extra slutty when you did, and you loved it. With only the slight break to rub of your pussy, you slide the red shorts onto you. They are incredibly snug upon you, almost skin-tight. Looking down you could see a near perfect outline of your pussy within it. Excitedly you rubbed your lips through the cloth, and you swear it felt better than anything you felt before. What was originally meant to be a little touch turned into a full-on session of playing with yourself. You rubbed against your clit quickly, your knees shook with the pleasure and soon you were on your ass playing with yourself.

Quicker than you would have expected, you climaxed more violently than you ever had before. You noticed that you had come quite an amount soaking the red darker. You were a little worried you already stained them however you noticed that it was slowly disappearing. Then you feel yourself rising upwards and immediately you look backwards at your own ass and see it slowly growing upwards. Reaching your hand back you give it a squeeze at it feels a little odd, but you couldn’t place why it felt strange. The only thing that was certain was it felt ever so good. You kept squeezing it again and again feeling it squish excitedly. Despite being skin-tight before, the shorts didn’t rip whatsoever.

The last bits of wetness disappeared from the shorts and your ass stopped swelling up. It nearly doubled in size. Standing yourself up you squeezed your new ass, and it was delightful. You walked around and felt it shake about. It made just walking about almost pleasurable while being a little harder with the increase in weight. You even noticed a slight liquid noise from inside of you, but it was still lost on you what it was. Looking at yourself you realize nothing else would fit your newly widened hips and ass. You weren’t planning on wearing much more anyways. You gently put on a pink tank top and head out to your favourite club for some action. You could always get some cock there. You quickly walked down to it, enjoying the admiration on your way down. Many stared at what was a massive ass now under your back, shaking with every step so tantalizingly.

You arrived at your favourite club in no time at all. It was local to you, and you were a famous slut there. Near anyone who passed your loose standards who went there had fucked you at least on one occasion with most being many more. The bathrooms where a hotbed of messy sex and you thought it would be the perfect place to swell your ass to even bigger proportions. Then when you were happy, you’d have thrown off the shorts and fucked away the night. The plan wasn’t defied as you weren’t sure how big was too big for you. You were sure that you’d know it when you saw it so until then you’d be getting much bigger.

On arrive you wasted no time getting to the back room, eager to test the limits of your new outfit. Scouring the area, you immediately found her regular. A guy, her favourite because he not only had a fat cock you just loved to ride. He also came buckets worth every time and could several times. You often left him feeling full like you ate a meal, this time you knew however it would go straight to your thighs. It took next to no convincing to get him to follow behind you into a private stall. He tried to speak but you hushed him as you’d often do at your most eager. He didn’t question it, instead removing his clothes for the fun times ahead. You saw confusion in his eyes when you only removed your top, but you knew you’d be able to convince him.

You began to rub his thick cock between your ass cheeks and just the feeling of that made you ever so horny. The way you could feel the ridge of his cock’s head pressing against your asshole made you want to ride it so badly. Even though it was all for the cum you just had to have it inside of you. Slowly pealing the shorts back, you exposed your asshole to him which he begins to tease. Despite not being covered in the fabric anymore, everything still felt so much more intense. If that was permanent, you’d have been even more excited, sex would be even better. With a slight plop his cock entered you and it felt so good. It felt thicker than it ever was, and he barely was inside of you. Every inch deeper he slid into you felt like five at least. This guy already had a good nine inches, it made you a little nervous feeling yourself being filled with it more and more every second without my h warning he began to thrust into you rapidly, a rough fuck as you loved it

It barely took any time with him penetrating you so deeply before you came again. Your shorts where once again soaked. You grinned eagerly knowing what held next as with a slight groan your ass started to swell once more. The man stopped thrusting to watch as your butt pressed against him, slowly covering more and more of his lap already leaking down his thighs. Not wishing to be crushed he pushed you onto another chair with your chest upon the seat and ass up in the air. Swelling even higher. It was wider than your shoulders and was quickly leaving that size in the dust. You finally felt what was odd as it started to slosh. There was a liquid inside you. Reaching your hand back, you squeezed it. It was thicker than water. It took a second and it dawned on you. Your ass is actually filling with cum. You absolutely loved it.

Everything was so pleasurable that you didn’t notice the guy cumming into you until it hit your insides. You lifted yourself up off his cock with a wide grin before you pulled your shorts back up snapping the band on your hip. The cum was already dribbling out of your asshole and soaking into the cloth. Once more your ass began to swell up and much faster than it had. Cum was so much more effective it almost made you stumble backwards. The guy came over and spanked you hard causing it to slosh. This was enough for you but there were still masses of cum in your guts. The swelling travelled down to your legs more, making you even wider. You didn’t have the smallest waist, but it looked tiny compared to your hips and ass. Deciding you wanted to stop, you peeled of your shorts which were still skin-tight down slightly, while it wasn’t glamourous, you’d rather do it soon the floor than have yourself swelling up too big. A few dribbles of sperm fell to the floor however the guy came up behind you and pulled it back up tightly.

Nervously you look back and he gives you a wink, his cock in hand and jerking quite vigorously. Before you could ask what, he was doing, he came all over your massive ass. It wasn’t hard to hit it was like two basketballs in a tight red pair of shorts and that didn’t even include your large legs. The second load caused your ass to surge out again. And with two loads soaking in, it was an unbearable amount of cum gushing in making your thicker every moment. Inches and inches gaining getting wider and wider and the guy was already preparing a third batch. You quickly push him and run out of the private room barely fitting through the door. However, one last surge outwards and you couldn’t pass through the door that separated the club from the backrooms. You were entirely wedged within the door frame.

Your intense moaning was drawing out all the horny men waiting for company such as yours, all began to swamp behind you rubbing and spanking your ass. It was still swelling bigger and bigger and sent waves of pleasure through you. It felt so so good and was feeling even better with every drip of cum. The guy you were with came out, still wanking away. He came once more on your ass, causing another acceleration of swelling. You couldn’t even go back towards him as you were properly wedged. The shorts still didn’t grow any tighter however, despite your hips being twice as wide as any other part of you. You couldn’t do a thing behind you, so you decide to start playing with your pussy. You were going to enjoy this no matter what.

The other men, on seeing your magically swelling ass, decided to join in. You felt fat loads hitting your gargantuan ass followed swiftly with small surges in your ass. It was getting so big. You could fit your old self in one of your current ass cheeks. You climaxed once more, each time getting easier with how good it felt. But … it started to hurt. You look back and your ass is pale. You realize why, you’re seeing the cum through your skin. So pumped full of cum that your skin is taking its colour. The skin you could see was slowly getting red, however. Stretch marks forming, running down your cheeks. It was all getting to much and you still felt new wads of cum hitting your ever-increasing ass. Each one making you swell up faster and faster. With one final climax and a loud moaning scream, your ass exploded releasing a rifle wave of cum over the club floor.

The red shorts, now shrunken back to the size they once were, floated on the pool of your mess before one young lady who was exceptionally thin in all manors picked them up. She wanted that massive ass you had. And was going to risk anything for it.

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