After having recently moved in to a new apartment, winning some free tickets to a concert, and absolutely nailing a job interview the day before, Sierra was on top of the world. The cute, petite brunette was practically skipping down the street, her skirt bouncing with every step. One could debate whether she actually earned any of these things; Sierra had always been a slacker, mostly relying on her abnormally good luck and cute looks to get what she wanted. But hey, she wasn't going to start complaining about it now.
"Man, it's good to be me!" she thought to herself. The energetic young woman hadn't a single care in the world as she made her way down the street. She closed her eyes and started whistling a tune, not even caring about the light amount of bustle going on around her.
"Honestly, I have no idea what could even happen to put a damper on today!"
As she thought this, she just happened to make her way under a ladder that a lazy painter had left out in the sidewalk. She bumped into the ladder as she walked under it, leading to the first in a chain reaction of pent up misfortune on the unsuspecting girl.
"Hmm hmm hmm hm- MMM!"
SQUELCH
As luck would have it, the painter who had left the ladder in the middle of the sidewalk also left his empty, used paint bucket in an unreasonably precarious position on the very top step. When Sierra jostled the ladder, the bucket came tumbling down directly on top of her, and, due to a life of being lazy, Sierra's body was soft and squishy enough to easily compressed by this meager weight. The bucket landed upside-down and had somehow completely engulfed Sierra, compacting her whole body down into its cylindrical shape.
"ACK! What the hell?! Nnngh! What is this?!" Sierra frantically wondered. A constant, unyielding pressure was compressing her whole body from every side at once, uncomfortably squeezing her from all angles and engulfing her in overwhelming tightness. Well, it wasn't 100% bad, since it did relieve some knotted up tension in her shoulders and felt kind of amazing on her privates, but it still wasn't an ideal position. Suddenly, she remembered a very familiar feeling from a few years ago in college when the "Squish and Seek" game was really popular. One of her friends had shoved her in a soup can as a joke, but thanks to her stellar luck she was found after only a couple hours.
"Ugh, I guess something like that is happening now..." Sierra pondered, "That's annoying. But hey, I'm sure someone will find me any sec- GAH!"
As it happened, someone did find the overturned bucket, but only that. Sierra was completely concealed underneath the metal container, and, thinking that it was just a simple can, the passerby kicked it on their way across the sidewalk. If they had paid any attention, they might have noticed Sierra fly out of the bucket as they kicked it, but hey they were thinking about more important shit.
Sierra's vision was suddenly filled with light again as she was launched out of the paint canister and sent rolling. After a disorienting trip across the street, she finally lost enough momentum for her still-cylindrical body to come to a stop.
It took a moment for Sierra to stop being dizzy and even begin to comprehend what was going on around her. "Bluuughh... W-Where did I wind u-"
VROOM
In an instant, Sierra felt the pressure on her increase exponentially as she was shot tumbling through the air. It was too disorienting to realize at first, but a car had just run her helpless, unassuming form over, and the motion of the tires shot her into the wind behind the car.
The next thing she knew, Sierra had flapped down onto the sidewalk next to the road, but all did not seem right. As she stared up at the sky, she felt an intense tightness and stiffness constricting her entire body, rendering her unable to move.
"...Owie... What the heck even happened?"
The rapid series of events was a bit much for Sierra to process at that moment. When the car's tire ran her over, it instantly squashed her body into a round, pancake-like shape. Her cute-as-a-button face was squished into a perplexed expression that very accurately reflected how she was feeling on the inside. Every feature on the pancake of the girl was completely flush with the rest, from her pouty lips to her squished breasts.
"Nnngh, can't m-move! At least it probably won't get any wor-"
"Ah! Look out below!"
"Wha- ACK!"
CLANG
Nearby pedestrians nearly soiled themselves as a 500 pound anvil slammed into the pavement from several stories above.
"Damn it Jim, that's the second time this week! We already have to fix a different part of the sidewalk!"
"Sorry boss, I'll get it right away!"
Shortly after, a few construction workers came down to the street level, and, using healthy lifting techniques, starting lugging the anvil away. However, what none of them thought to do was to look underneath the anvil to see what sort of recently cursed with bad luck girls might have been caught underneath. If they did, they would have caught a glimpse of what would appear to be a very thin sticker of an underskirt picture.
Sierra's senses gradually returned to her once the immense weight was lifted off of her body. Still very confused, the one thing that she could tell was that every ounce of her was overloading with sensations. Her nerves had all been compressed together from being sandwiched between the unyielding metal of the anvil and the solid surface of the sidewalk, making just about everything overwhelming. Mostly she just felt ridiculously tight, but something between her legs was telling her that she needed even more.
"Nnmmf... Wha happun?" She vaguely thought to herself as her mind came back to her. She began to recognize that her top surface was plastered against something cold and smooth, but was gradually peeling off. Before long, her body naturally came loose from the underside of the anvil. Rather than plopping down onto the ground as she expected she might, her body had become so thin and light that the city breeze began to blow it along the street without the construction workers even noticing. If anyone caught her wild dance through the wind, they would probably mistake her for a decorative scrap of cloth, so thin that the sun partially shone through her at the right angle.
"M-Maybe I'll wind up somewhere safe this time..." Sierra's mind was hazy from overstimulation as she vaguely hoped for her crazy ride to end.
Unfortunately, the winds of fate decided this was not to be. They instead sent the flimsy thin sheet that was left of her body straight toward a part of the sidewalk that was currently under construction.
"Ah, a job well done!" said the friendly construction worker who had just finished smoothing out the wet cement she had just poured out, "I can't wait to put my tools away and never inspect this again!"
Right as she did just that, the wind decided that Sierra should be plopped down directly into the still-drying cement. Face down.
"Ewww! Get me out! This is so unfaaaair!" Complaining in her head was really the only thing that Sierra could do in this situation, seeing as how she was too flat to move a single muscle. She was at least grateful that she was still somehow able to breath with her face full of wet cement, but she certainly didn't appreciate the feeling. She also wasn't very keen on how she could tell that her underside was completely out in the open and exposed to the elements. Unfortunately for her, all Sierra could really do was sit there and pout as the concrete slowly hardened.
"...Great... I'm stuck. I'm flat. Everything feels tight. I'm probably showing everyone my butt. And the sad part is, the most frustrating thing is that I can't even get myself off..."
By the next day, she and the cement were completely dry and hardened. At this point, Sierra was entirely immobile, unable to even twitch and inch. To her endless frustration, this meant that she had no way to relieve all the pent up yearning for sensual contact she had been feeling since getting squished. Both her discomfort and her horniness were at all time highs, and there was absolutely nothing she could do about either.
"Uuuuugh, someone help! Or at least finger me- nnngh!" Sierra's mental ramblings were interrupted by a pedestrian stepping right on the center of the decorative street decal she had become. Then another came by whose foot just barely brushed her. Then another stepped directly on her. Person after person on the walkway went by, and Sierra was stuck bearing it. Those who bothered to look down would have various reactions: some would laugh at the idea that someone would paste the image of a girl's underskirt onto the sidewalk, some were disgusted by such a lewd display in public, and others just carried on with their days, too busy to care about such a silly thing.
And so, Sierra would continue to be bombarded by the steps of uncaring pedestrians, left entirely at the mercy of someone deciding to inspect the strange sidewalk art closely enough to realize that it was a person, and hoping that her luck would take another turn for the better sooner rather than later.
