Warning: This story features bondage and non-consensual sexual content.

Context: This is a short story written for Day 10 of Kinktober 2024 using the prompt words Experiment and Tight.

Sandy strutted out of her bedroom wearing a tight dark-blue single-piece uniform. It was short-sleeved, stopped short of properly covering her butt-cheeks, and had a zip all the way down the middle that she’d unzipped halfway.

“Hands up Nina! You’re under arrest!”

“Sandy why are you wearing your old Halloween police officer costume? Wait, am I…”

I wore a similarly tight and revealing costume with the same shape, except mine was a bright vibrant orange.

“Am I supposed to be a prisoner? Sandy I thought this was some sort of special clothing needed for your experiment.”

“It kinda is! My new invention could revolutionise arrest procedures. Every law enforcement agency in the country would be after it. I figured for our test we ought to get in the right headspace! Unless you want to skip the experiment and I could just handcuff you to my bed instead~”

“sigh. No let’s just get this over with it. You’re not the only one who has projects due.”

Sandy cleared the coffee table and laid out her latest and greatest invention, developed for her engineering course. There was a wide leather toolbelt with custom holders affixed to it. Attached to them were stacks of long rectangular strips, each a few inches wide and hanging down about a foot and a half long. They were an unknown material, coloured with diagonal blue and yellow stripes on one side, all grey on the other. The one other belt-attached object was a small handheld device shaped like a barcode scanner.

After clipping everything into place, Sandy lifted the belt and fastened it around her waist.

“Alright, finally ready to try these in action properly. Thanks for volunteering to help out Nina. Best roommate ever!”

“Uhh sure. You still haven’t told me exactly how I’ll be helping though.”

“Well. I’ve tested out the arrest-strips as much as I can. But using them on your own legs only goes so far. To really see if it works, I need to try it on someone else. More importantly someone not just standing still, but resisting. Soooo…”

click

She locked the apartment door closed.

“You should run.”

“What?!”

She unsnapped one of the blue and yellow strips from her belt. It was rigid and wobbled at the end like a plastic ruler. Seeing the devilish look on her face, I knew was in trouble.

I turned to sprint away and she pursued. Before I had even reached the next room, I heard a whoosh through the air. She smacked the strip against my upper legs, releasing her hold of it at the same time. In an instant the strip automatically extended and curled inwards with a zipping noise, wrapping fully around my legs. My thighs were squeezed together astoundingly tightly, turning my run into a stumble.

“Kyahh! What the heck Sandy?”

I tried to waddle away but with my legs’ freedom of movement halved, I was greatly hindered. Sandy sauntered forward, no longer needing to run, and bent down swinging another strip. It smacked my legs above my ankles, zipping around them and dragging my lower legs together. I lurched forward with unsteady hops, grabbing a chair to keep from falling.

“Up against the wall criminal!”

Sandy grabbed my shoulders and shoved me face-first into the wall. She pressed in close behind me, wrestling my arms together. The moment she had both my arms behind my back, she pushed a strip against them and let go. I heard that zipping sound again and both my arms were wrenched inwards. The angle was awkward and although my arms were pressed together very firmly, with some twisting I felt like I could slip out.

“Oh no you don’t.”

With my arms hindered, Sandy was easily able to grab my elbows and push them in towards each other.

zzzip “Ahhh!!”

The new strip Sandy slapped above my elbows pulled so hard that they were slammed all the way together. The constant squeeze felt like someone was still actively pushing my elbows in. With my arms more aligned, the lower arm strip closed in more securely. There was no way I was slipping my wrists free now.

“Oww Sandy that’s ridiculously tight. You need to tone these things down. A lot!”

“Criminals don’t have rights! Well ok obviously they do. But criminals in sexy jumpsuits resisting arrest surrender the right to be treated gently!”

She spun me around, making us face-to-face, with my back pinned to the wall. She moved even closer.

"Now I need to search you for uh... contraband~”

“Sandy come on, now isn’t the time to play gam-ahhh~!”

She pushed right against me, her hands groping me roughly. One slipped beneath the unzipped cover of my breasts and the other grabbed a handful of my ass, pushing up under the shorts at the back.

“uhhuhh~~~”

“Heh~. I better also make sure you don’t have anything like a paper clip hidden inside your mouth. For lockpicking.”

“Lockpicking? These things don’t even have locks! They’re just-mmhh!! .... Mmmmhhh~~”

Her tongue invaded my mouth for her ‘search’. Running around in this slutty outfit was one thing. Getting manhandled and French-kissed was definitely not an essential part of this test!

“Mwah~! You're clean. Well clean in one sense, you dirty girl~”

“Uhhh... so test completed right? You can let me go now. Cause I really need to get working on my own- GGMMPH!”

“You have the right to remain silent! giggle. Your dirty socks from before you changed will help with that.”

“MMPPPHH!”

I was infuriated. Sandy had shoved both of my filthy running socks into my mouth. The salty taste was hitting the back of my throat. I wish I hadn’t gone for a 5-mile run right before agreeing to this. In fact, I wish I hadn’t agreed to this altogether.

zzzip!

An arrest-strip smacked my mouth, wrapping tightly around my face. It compressed my cheeks, forcing me to bite hard into the socks. I gulped a large spurt of sweat wrung out of them.

“Mmmmph!!! Smmhm! Lhm mm ahh!”

“But you’re so cute like this~. Oh don’t worry I’m just playing around. I’m sorry about the socks. I admit I went a little too far there. Here, I’ll show you how these get removed now. It’s the best part!”

The scanner-like device finally came into play. As Sandy held down the trigger, a soft hazy red light shone from it. She crouched down and slowly waved it over the lowest binding strip. I could feel the strip start to warm up.

As she stood up and moved towards the thigh-strip next, I could feel warmth still lingering in the first strip in reaction to the ‘release’ gun. I had to admit I was impressed. Sandy was good at what she did. That opinion immediately changed when I felt the strip start gripping me tighter instead of loosening.

“Shmmh?!”

“Pretty neat huh? There’s an inner strip that reacts to the coded signal and automatically unfurls. It’ll just fall off on its own after a few seconds. Stop wriggling about Nina! I’m trying to do the next one.”

“Shhmh!!”

Sandy was too confident in her work. She was moving from one strip to the next without actually checking what was happening. She forced me to turn around and waved the releaser over my wrist and elbow strips. My increasing agitation and resistance only earned me a harsh spank.

It was only when she lifted the device towards the gag-strip that she saw my desperate face and realised something was wrong. She glanced down and finally understood that the strips not only hadn’t fallen away, they had become much tighter.

“What’s going on? Why aren’t they.... ohhh. Wait.”

“Mmm?”

“I make this mistake once before. Soooo... this is a bad batch. I must have accidentally arranged the inner strips backwards.”

“Bhwhwhh?!”

“Yeah. They’re unfurling in the wrong direction. In other words, they’ve closed tighter around you. Hmmm. I can see they’re pinching in real hard, but they're not cutting off blood flow or anything. So even beyond normal levels they’re safely wearable. A pass for the safety test!”

“HMMMM!!”

“Ok ok don’t fret. There’s a solvent back at the engineering lab that I can drip into it. It’ll slowly dissolve the inner strip and let us pull them off. You wait here. In fact...”

Sandy grabbed my arm and marched me into my bedroom. I was helplessly hopped over to the corner pole of my four-poster bed. She unsnapped two more strips and slapped them against me at the ankles and waist, affixing me tightly to the pole.

“MMMMH?!”

“Sorry but I need to leave you here alone, and I’d worry about you hopping around trying to get free and hurting yourself. Just trust me. Think of this as your jail cell~. Ok gonna run to the lab now. Which actually works out because now that I know the strips work, I can turn the project in tonight! Ok see you in an hour at most.”

“MMM!!”

Sandy changed her clothes, gathered her equipment and departed with a wave. Leaving me stuck in a prisoner outfit, gagged with sweaty socks and standing stuck against my bed in the tightest imaginable restraints.

Many hours later, I was jerked awake from my dozing by the apartment door closing.

“Mmmh.... Shhhmhh?”

“Oh my god Nina! I’m so sorry! I forgot all about you. When I was submitting my project, I ran into my professor at the lab. I ended up showing off my creation to him and some other students there. They loved it! We went out for drinks to celebrate. By the time I remembered I’d left you here, the lab was locked up for the night.”

“Mmhh?”

“Sooo yeah. I’m not gonna be able to take them off tonight. I’ll go to the lab very first thing tomorrow morning though, I promise! But I guess for now... Goodnight Nina! Thanks again for the help~”

“Mmmmph!!”

She kissed my forehead and went off to bed. To her soft bed that she could comfortably lay down on. While I would spend the entire night stuck standing up, the soft mattress so close right behind me. Stuck inside her agonizingly relentlessly tight creation, sucking on my own socks.

I was never helping Sandy test anything ever again.