Archive of Our Own ^beta

No doubt this robot could snap her bones like twigs if its operator got too carried away with it. The thought made her heart beat faster and her breath come quicker. She knelt on white tiles, wearing only dark red underwear and a sheer black dress over it. Bright light shone down from the numerous tube lights on the ceiling. To her right, a huge mirrored window pane was embedded in the wall, as if she was about to be interrogated. But what was about to happen was so much more fun than that.

A bratty smile lifted the corners of her mouth as she stared daggers at the figure in front of her. The robots eyes were black lenses, moving now to observe her face and body. Its own body was crafted from a dark silver metal, and it stood upright with ease, just as a human would. Only that it was about seven feet tall and had no facial expressions. And its features were more angular, not as soft as human curves. Slowly, it started walking towards her.

---

Her boyfriend had needed someone ablosutely mental for the next stage of tests. Someone who was willing to put themselves in danger just for the thrill of it.

It was important for him to know, for personal reasons, if his robots would perform well and be safe to use in kinky settings as well. So he had gone home to his nesting partner, folded her hands behind her back and whispered in her ear: „I need you for an experiment.“

Her jaw had dropped a little, but her eyes had brightened, regarding him with anticipation. „Sounds fun, what do you need me to do?“ 

She knew what he did for work, and had been quite impatient for the trials to end so she might get a chance to try them out. There was no guarantee though, because he did design these robots first and foremost as sex toys for disabled people and they would be quite expensive at first. She and her boyfriend were both able bodied so they wouldn’t claim one for themselves.

Robots in combination with VR glasses had been used for years now to aid physically disabled people with accomplishing or experiencing certain things, but so far none of them had genetalia or officially sex-specific functions. A missed opportunity, really. Once her boyfriend changed this, it would be a scandalous turn of events. She couldn’t wait to witness the reaction of the general public. 

„I need you to be one of the test subjects.“, he said to her with hungry eyes and a charming smile on his lips. 

„Me?“, she asked in disbelief, „I thought you have couples come in for that. You know, where at least one of them is disabled?“

„Well, turns out I can’t find a kinky enough couple in our area that is brave enough to enlist. I need to test them for the more dangerous practices.“ 

She looked at him, mind racing. She wondered if he was entirely truthful, or if maybe he arranged this specifically to get her into the lab. She decided not to ask and play along. She would accept this gift greatfully. 
„And you think I will be brave enough?“

„Yes.“

„What will happen?“

„You‘re gonna have to find out.“

„Okay, I mean yes, master.“ She lowered her gaze to the floor while the scenes she‘d been fantasizing about for months replayed in her head. 

„Good girl. I knew I could count on you.“ 

„So you will wear the glasses and steer the robot?“, she asked in anticipation. 

„No.“ He replied. „I will only observe, as always.“

---

The robot lifted its arm and lightly touched her shoulder. A slow start then, she thought. Charming. It walked around her, its cold fingers tracing a line across her neck to the other side. She allowed herself to bathe in the fear, to let it stir her insides and redden her cheeks. She relished the feeling of uncertainty. This ultimate display of trust in her master and in his choices. 
Knowing he was watching this from the other side of the glass gave her security, yet made her feel delightfully exposed.

She dared to lift her hand to touch the robots hip, hoping it would grasp her wrist to make her stop, to assert some dominance. It simply took a step back, out of her reach. Disappointed, she lowered her hand back to her thigh.

Since she presumably had never played with the person steering this robot, she instinctively wanted to test their temper. Slowly, she leaned forward onto her hands and came to all fours. Her eyes fixed on the robot as she crawled towards it. It let her come close, but slowly stepped backwards as she approached, staying out of reach. Maybe they‘re testing me too, she thought, or maybe they‘re still plotting. 

Her eyes traced the robots body. Though it was humanoid, there were no clear signs of gender to be found. The chest was only somewhat flat, the torso only slightly v-shaped, and there was nothing beween its legs. Interesting, she thought, taking note of the narrow gaps along its body. Those looked like some fun modifications might be about to happen. 

As if her mind had conjured it, a small panel slid to the side in the robots palm and parallel to its underarm, a short metal rod protruded. The robot closed its fingers around it, holding it like a scalpell. She stopped crawling and knelt again, curiously observing. To her relief and slight disappointment, the rod did not end in a blade but in a wheel, reminding her of spores on riding boots.

The robot took a step closer again and lowered itself to her level, casually crouching in front of her, elbows on its thighs. Its cold, expressionless face almost touched hers now. She dared not to move as the wheel touched her skin at the base of her neck, causing a small, sharp pain. It seemed to be edged with small spikes. She licked her lips nervosly and felt her breath quicken. The unbreathing creature before her moved the wheel slowly down her body, the spikes piercing effortlessly through the thin fabric of her dress.

„Easy.“, she said with a steady voice and smiled at her mirror image in the window pane beside her. She imagined her master behind the glass calling her a good girl for it, as she was instructed beforehand to consistantly give verbal feedback on the pain levels.

In a qick and precise motion, the robot grasped her chin to move her head back around. That clearly meant it wanted her attention for itself. She would gladly oblige. The slight pain from the spikes was easy to endure and yet it did its job effortlessly. Her body immediately longed for more. 

She had expected the metal wheel to stop a few inches below her belly button for a classic tease. Her eyes widened as it continued its path straight onto her clit. A gasp and a small whimper filled the silence of the lab. „medium“, she breathed, a bit more shaken. 

The robot removed the wheel from her and while it disappeared back into its palm, its other hand grabbed her hair and forced her face down onto the floor. The movement was so quick that she feared she‘d hit her head on the tiles, but the robot stopped her in the exact right moment, causing a surge of pain from the hard pull on her hair.

„Medium.“, she groaned.

A cold hard hand remained on her upper back, applying pressure and keeping her in place. It made it hard to breathe, but her breathing had gotten flat anyways. She managed to turn her head towards to mirror just in time to see the robots other hand fly up to aim for her ass. With a loud clap, delicious pain seeped into her skin. She made a small noise of surprise and smiled.

As the pain subsided she said: „Easy“, her voice hoarse and her mind already clouded with desire.

She had not expected to get spanked by the robot. Somehow that seemed so ordinary for this unusual setting. But then again, the robots were designed to do exactly what an able-bodied human could do, before receiving any fancy additional features. 

The next few slaps were a treat for her, she knew as much because they did not increase in intensity.

Then the testing began, as the robot increased its force. A little more pain was no problem, but it soon became more intense.

„Medium.“, she managed to say in between blows, and without hesitation, the next time it hit her even harder. The lack of consideration made the robot appear more inhuman, which turned her on. She gritted her teeth and small moans ecaped her after every loud slap.

It seemed like the robot had now added dull spikes to its palm. One more of the fun additional features. Soon her mind was caught in an argument with itself, wether to endure even more, basking in the pleasure of it, or to stop the increase of searing pain that came with each hit. Could she still endure the next?

„Hard.“, she forced out when it happened, half screaming. This time the robot stopped, and there was silence except for her heavy breaths.

Her body was covered in sweat and her panties were soaked. The robots hand on her upper back moved up to her head, and for a moment it stroked her hair gently. She closed her eyes and felt warm in her stomach as she knew she had done well. Still, she felt the tingle of anticipation, because maybe it did this to suprise her with something less soft and caring. 

The robots hand gently moved back to her back and suddenly, another hit landed on her sore ass, this one as painful as the last. Her scream echoed through the lab.

„Thank you“, she said quietly, more a reflex than a decision, because her master had trained her well. 

Her dress was pulled up, revealing her ass and back, and making her feel the cold tiles against her thighs and stomach. Now she felt the spikes of the wheel again, on her back. It was pressed so much more firmly to her skin that she whimpered in response.

„Medium“, she said, her eyes firmly closed, and immediately the pressure increased even more.

The overflow of sensations started to exhaust her body, the enduring of pain began to test her mind.

„Hard“, she moaned.

Something cold traced the burning line the wheel had left on her body, she assumed it was the robots finger. Then it was at her lips, parting them softly. The taste of iron spread quickly on her tounge. Was this the taste of the robots material or had the spikes drawn blood? She welcomed the fingers into her throat like the good whore she was. Feeling the cold metal in her mouth made her want to feel it elsewhere. Again, the other hand stroked her hair as if to praise her - or belittle her, she wasn‘t completely sure. 

The robot took the fingers out of her mouth and effortlessly pulled her body up to standing. Her knees were weak but she was not allowed to walk herself anyways, rather she was half-dragged over to a small table in the middle of the room. She was bent over it, her stomach, chest and cheek touching the cold and sleek padding of the table surface. Padding, she thought, almost cozy in here. It amused her.

Her feet were placed far apart, but she could still reach the ground on her toes. Her ass faced the supervision window, surely on purpose. The operator of the robot was giving her master a show. She wondered if they knew each other. And if her master was touching himself behind the glass. She imagined his chest rising and falling quickly, his hungry eyes staring at her legs and ass. And she wondered if the operator was in the room with him. If maybe they had an agreement that included touch? 

The robot pulled her useless dress up again, this time only to her waist, interrupting her train of thought. Then it grabbed her panties and tore them apart with ease. They fell to the floor between her feet. A small gasp escaped her. 

She thought of how hot she must look now, her ass red from spanking, arms crossed behind her back, legs spread wide, compelety exposed in the unforgiving light of the lab. It made her feel sexy and proud and turned her on even more. Her pussy was probably dripping on the floor. She couldn‘t wait for it to finally be filled up. But she wouldn‘t give them the satisfaction of begging for it. She could be patient. She would relish every second of this experience, no matter how much it would test her patience. 

The robot stood in front of her, its empty crotch hovering right before her face, and leaned forward. Its cold hands grabbed her ass cheeks and pulled them apart, so her master could get a better look. She imagined him standing behind her now, grabbing her hips and burying his dick deep inside her. She wanted to be fucked so badly.

Two metal fingers traced her labia, moving towards her clit. They grazed it shortly, sending a shudder through her body. Then they slid inside her once, only to worsen her desparate need. They found her clit again, resting on it without moving. Imaptiently she considered her options: Rock her hips to get some stimulation, or stay still to be sure she wouldn’t be punished.

Suddenly, the fingers on her clit started vibrating intensely, making her whince in surprise. There were small motors embedded in each findertip - what a simple but great modification. She greatfully welcomed the pleasure after enduring all this pain and suspense, managing a „thank you“ in between heavy moans. This whole experience was already everything she had dreamed of and more.

The robot granted her quite some time of pleasure, carrying her delightfully close to the edge, but denying her release. It let go of her and stood more upright again. Her muscles relaxed for a second, her breath steadied.

Then she heard a noise in front of her, making her lift her head to look. Her eyes widened in surprise at what she saw. There was no way this was the standard model. Her master had crafted an appropriately sized dick for this robot, to either please or to scare her. Probably both. It was the same dark silver colour as the rest of the robot, and it was beautifully curved and slightly textured. The tip and especially the middle part of the shaft seemed concerningly thick. She dared not to move or speak. If the robot decided to thrust this into her for punishment, that might just be too much to bare. So she waited and desperately hoped for it to go slow.

The robot held on to the edge of the table and moved it with her still lying on top. She bent her legs so her feet weren‘t dragged over the ground and held on tight. When she understood that the angle was now better for her master to watch her get fucked, another wave of desire burned low in her stomach. 

The robot stood behind her now. When she felt its cold hard dick rub against her, her moan was almost a sob because she wanted it inside her so badly. Yet she welcomed the slight stimulation of her clit. Her muscles tensed up again, she closed her eyes and instinktively tried to move just a little closer, to get just a little more. The robot grabbed her hips to keep her still, its fingers digging into her skin, shifting its weight to press her down firmly onto the table. She noticed that its hands had warmed up from her own body heat. 

Its dick pushed against her entrance now, slowly burying beween her labia and its large tip pressing into her. She moaned again at the sweet sensation of being stretched out by this cold and unyielding force. Pain kicked in soon, making her whince and twist under the robots palms. But she couldn’t move a single inch, for the machines grip was too strong and consistent. She pushed against its wrists with her hands to no avail, crying out „medium“, moaning in pain and pleasure.

Then the tip was inside her, the first difficult stage was done. Finally she had gotten what she wanted, and the pleasure of being filled and stretched clouded her mind and vision. The robot gave a small thrust, not using the full length yet, but stretching her even more and sending a shudder through her body.

„Hard“, she whinced. She needed to try and concentrate. Relax, she told herself. She stopped fighting and released a long breath, letting go of some of the tension in her body. After a break that only worsened the suspense, the robot slowly increased the pressure, sliding further into her. There was no friction since she was certainly wet enough for two, but the sheer size of it was testing her limits. The rigid nature of its material wasn‘t helping. 

She felt the robot let go of her hips and place its underarm on her upper back as it leaned forward. Its heavy weight pinned her down, restricting her breathing again. It used its other arm to reach around her and place its vibrating fingertips on her clit again.

Her delighted moans turned into a scream of pain as her pussy eagerly took in the full length of the metal giant. The pain now moved deep into her lower belly, from the internal pressure this was causing. This can‘t be possible, she thought faintly, though she had lost track of reality a while ago.

The robot stayed still, but the vibrations continued, and her pussy tried to clench around this impossible intruder. But there was barely any space for the muscles to tense up. The pain and pleasure danced and spinned around each other, making her slightly nauseous yet utterly content.

„Thank you“, she whispered in between moans.

Slowly, the robot pulled out a bit, only to thrust back inside with more force, earning another scream.

„Thank you!“, she repeated, delirious. 

The vibrations stopped and the robots hand moved to her face. The fingers were pushed down her throat again as the thrusting contined, slowly pulling out, forcefully pushing in. Tears filled her eyes, but she didn‘t want any of it to stop. When she gagged, it impossibly turned her on even more.

The robot removed its fingers and wrapped both arms around her upper body. Then it lifted her up and carried her over to the mirrored glass, its dick still half inside her. It thankfully didn’t put her down, since she was sure she couldn’t stand on her own anymore. But it leaned her against the glass, and she held up her arms to brace herself against it.

One after another, the robots hands moved to her waist, holding her tightly upon its dick. Then it slowly started to fuck her again. Her legs dangling uselessly several inches over the ground, her last bit of strength channelled into her arms to hold herself up.

She lifted her head and looked into the mirror at the huge, expressionless figure behind her. At its hips smashing against her. At her own face, eyes half closed, mouth open, hair sticking to her sweaty forehead. A faint image of her master behind the window crossed her mind.

Suddenly, the pain at her hips increased sharply. The Robot was making use of the spikes in its palms again. It fucked her harder and faster now, her pussy stretching delishiously with every thrust. She barely remembered her assignment to give feedback on the pain.

„Medium“, she moaned, and it did not sound like a complaint.

Now the robot shoved its dick deep inside her and stayed there, hips rocking only slightly back and forth. It felt amazing. Then she felt a large amount of fluid begin to drip down her thighs. The first second she wondered if she was bleeding, but then she realized it must be a cum replacement. And a very generous amount of it. Heavy moans rose from her throat at the notion of being filled up by this foreign creature. 

Then she was being moved again, the dick sliding out of her, to her disappointment, and dragged back over to the table. She was thrown onto it, facing the ceiling, the robot standing between her legs.

It rubbed its dick over her clit again as its hands moved up her body. They took off her dress and tore away her bra. It grabbed her chest forcefully, making her whince in pain.

Then its hands quickly moved up to close around her neck. Her eyes widened as the pressure increased and the hands locked in position, barely allowing her to breathe. The pressure also restricted the blood flow to her brain, making her delightfully dizzy. Her breathing slowed, her eyes rolled back behind half-closed lids. Yes, please fuck me unconscious, she thought. While the robots hard metal dick, now hot and dripping with cum, still rubbed against her clit. She wanted it back inside her so badly. When her eyes slowly fell shut and her body relaxed, the robot released her neck and blood rushed back to her head. She drew a long, deep breath and slowly came to her senses.

They were hightened now and the robot was already taking advantage of it by forcefully shoving its dick back inside her while grabbing her hips with its spiked palms. It drew a scream from her lungs, then a heavy moan followed.

„Thank you“, she sobbed, eyes filling with tears.

But the robot wasn‘t moving now. It just kept its dick where it was, buried up to the base in her swollen, cum-dripping pussy. Another test of patience.

And again, one of its hands closed around her neck. The other rose beside her head, giving her just enough time to realize what was about to happen and brace herself for the impact. The slap covered the entire side of her face in burning pain. She whinced and twisted in the robots grip, tears running down the sides of her face.

It gave another thrust of its hips and waited for the end of her moan, to cover her mouth and nose when she would not have much air in her lungs to begin with. She stared at the robots face, eyes wide open and hands wrapped around its wrists. She had no chance of moving them no matter how hard she pulled. As the lack of oxygen became harder to bare, the robot started fucking her again. With the breathing reflex kicking in, her lungs strained to inhale without success. Fear rushed through her body, joining the overwhelming pleasure. Finally, the metal hands let go, allowing her to draw sweet, heavy breaths.

Then its hands were in her hair, pulling tight, while the robot rested its forearms on either side of her head. Its expressionless face was close to hers again, its massive body looming over her. Every thrust echoed through her whole body. It fucked her faster, her pussy effortlessly, greedily taking it by now.

To her delight, the robots body now rhythmically pushed against her clit. In a mean way though, just enough to feel good, but not quite as much as her body was asking for. Again she felt cum fill her up and overflow out of her. But the robot did not stop, it just continuied ramming into her cum-filled pussy. That sent her closer to the edge, deep desperate groans rising from her chest. They turned into another scream when she came hard, holding on tightly to the edge of the table, her body arching towards the cold metal creature.

And again, there was no reaction from the robot. It just kept thrusting into her, while her body went limp and her chest was heaving in exhaustion. Unable to do or say anything, her own helplessness immideately turned her on again. She let it happen, her body loose on the table like a lifeless doll.

Unable to hold them up anymore, her legs sank downwards, closing in around the robots hips. It stood upright again and grabbed her legs to pull them up. Then they were on eiher side of the robots head, allowing it to fuck her just that little bit deeper that was needed to spark another wave of pain. She gave a weak whince, and half-heartedly tried to push the robot away. It responded with a slap in her face. That earned another moan from her and rekindled her fire.

„Fuck“, she moaned. „Medium“, she then remembered to say, glancing briefly at the mirror. She saw herself getting fucked again, on the table in this bright and clean room, her skin shiny from sweat, matching the robots polished exterior. Somehow she was already back to where she was moments before. A horny, whiny mess without clear thoughts or a sense of self-preservation. Only here to get fucked. Get used. A convenient and obedient test object.