Unauthorised Modification

Story by Abelet on SoFurry

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The future is full of wonderful and extensively tested products! But forbidden fruits always taste sweetest, and Persephone just can't help but test the limits with some modifications. Into unknown territory and equally unknown consequences!


This was one of the first stories I ever wrote for a customer!

It was written for Hypurrion, on FurAffinity, who owns Persephone.


Hello ladies. We know you go to a lot of effort to impress potential partners. We know all that effort can be stressful, especially when it goes to waste, and sometimes you just can't be bothered to go through it all... even though you know you'll find yourself unsatisfied by the end of a night in. Why not let us satisfy you from now on? Introducing the Autoplease™ Pussy Bumper! With powerful vibrations, dozens of nubs and a high capacity, rechargeable power cell, this is one dildo that will do you better than any man. It also comes in a variety of lengths and girths so we can find the right size for you! Once you've attached the device to your thighs, keeping them spread and allowing easy access to your flower, you can easily control its thrust and vibration functions with the remote control! Optional wireless interfacing with neural chip implants makes this even easier, allowing the Pussy Bumper to adjust its own control based on your emotional state! WARNING: Autoplease™ will not be held accountable for injury or 'mishap' that occurs in the case of device tampering or misuse.


The universe is a big place. It was made smaller when we built ships to travel through space but that didn't mean it needed any less exploring. There are all kinds of alien worlds out there, and civilizations to meet, so 'explorer' quickly became a common title that persists to this day. But not everyone is a nomad of the stars. There are countless populations living with permanent residence, and thoughts of exploration are far away from their daily lives. In fact, the things that interest and concern them are more or less the same as they were back in those ancient times when a single terabyte was a large amount of data.

Persephone is a perfect example of one such civilian living planet-side. She was horny one night, and a little addled by wine, when she saw an advertisement on late night television for a... 'pleasure device', to put it delicately. She blushed when she opened a package that arrived on her doorstep the next day, having forgotten all about it until the shiny metal ball was staring her in the face. Then the memories of the ad and her thoughts returned to her. It was right, wasn't it? Here she was, a gorgeous African wild dog (a damn rarity on any planet outside the Sol system!) with vibrant, colourful and beautifully patterned fur... and she still had to compete to find someone to bring to the bedroom. Even though her looks were natural, she lived in a time when looking this way was easy for anyone and flashy accessories seemed to rule the day. She'd smiled as she continued to look into the package. She had her own accessory now. Why shouldn't she treat herself? Try out this... Pussy Bumper? It sounded pretty fun from the ad. And fun it was!

A few days and multiple uses later had her feeling very satisfied with the product, especially with the neural chip interfacing feature; it just seemed to understand exactly what she wanted! Faster, slower, deeper? The machine really did do all the work and did it just right, except... well, the advertised 'strong' vibrations didn't quite feel like enough. She wanted something powerful! Fortunately, Persephone's a real techie and no stranger to tinkering. After ripping off the warning label and opening up the device she unscrewed a few pieces here, replaced some ball bearings there and, most importantly, changed the motor to something with a lot more... kick. She shuddered at the thought of how good it was going to feel. The only thing left was to change a few lines of code to accommodate the replaced and rearranged hardware (and remove that pesky rpm limiter) and then her modded dildo was all complete. She closed everything back up, good as new, and brought it to her bedroom...

Already naked, Persephone sat up on the bed and went through the motions. She placed the spherical device between her legs, around a foot away from her vagina, and thought of the command to activate the spreader bar. Metal strips coiled out from either side of the orb and began to wrap around her legs above her knees. She was surprised to find that it was comfortable the first time she tried it but soon realised that the inner side of the strips were softly padded. When they finished wrapping around, they locked into themselves so that they were as solid and restricting as metal cuffs. Then they extended from the device, moving her legs apart to create free access to her slit. The final phase of preparation came now, a hatch on the device flicked open and the dildo pushed out, pointed directly where she intended it to go. Bit by bit it emerged until all 9 inches of the purple nubby dildo occupied most of the space between the device and her flower.

Persephone could only bite her lip with anticipation as she thought about what that motor was going to feel like. The curiosity had her wet already and the fucking machine needed no more command than these simple thoughts. The dildo extended, parting her lips with its sizeable, yet comfortable, thickness until the head was lodged inside. Then the vibrations came. They were small at first; after all, what kind of experience would this be without the build up? But they quickly ramped up to the point that she fell back on the bed, gripping the sheets beneath her with a high-pitch gasping noise. She grinned to herself, very happy to feel the success of her skills. The motor was a lot stronger than the one she replaced so it made a bit of a droning sound but it was music to her ears. She wanted for more, to feel the dildo more deeply inside her, and the fucking machine obeyed; almost eager to carry out its programming.

The vigorously vibrating dildo easily slipped forward thanks to her wetness and buried its entire length inside. Her toy was big enough that she could feel the tip of it press on her cervix, sending the vibrations right into the core of her being. Persephone rewarded this sensation with a loud moan. Every nub on the dildo felt like it was vibrating separately, creating their own centre of pleasure along the inner walls of her vagina. Wetter and wetter! She bit her lip again as she dared to let a thought pass her mind. She was just too curious not to think it. What was it going to feel like when- The dildo pulled back and thrust forward, already repeating at a decent pace. It was more intense than she expected and now it was arousal that commanded her thoughts. Her body craved and she cried out for more. How long did the machine thrust into her body? How many times? Time was of no concern, nor were any numbers. Everything felt like it was happening in the same second and she could only focus on that rapidly approaching feeling. She felt like she was about to explode between her legs... and she did. She freely let out cries as waves of pleasure crashed across her; the vibrator still going strong throughout.

As the orgasm began to fade, Persephone noticed something odd. Neither the vibrations nor thrusting of the dildo were slowing. Normally, as the crashing waves of pleasure reduced into the gentle drags of a tide pool, the fucking machine responded to the neural link in a like manner, thrust and vibration fading away until it was all stopped and the restraints let her legs go. Actually, it seemed a bit faster. Persephone let out a half gasp, half sigh. It must have gotten stuck but this would be the first malfunction she experienced with it. No matter. She reached for the controller... Oh no! It never occurred to her that she should have the controller close by in case the wireless interfacing failed! It was still in the box. Maybe she could crawl- Any thought she had of moving was instantly crushed when the restraints shifted higher and further apart, spreading her legs even more widely for better access and pinning her to her back.

Persephone squealed as the dildo drove into her faster than before and brought her to her second orgasm. God it was so good! She shook her head as her heart raced. She needed to focus or else she'd be stuck here being fucked senseless. Her eyes steadied and she got a clear vision of the Pussy Bumper. There was no kill switch on it, no way to open it without tools and the power cell was constantly recharging itself. Her eyes drifted down to the dildo drilling into her, drawn in by the lewd wet noises slurping between her legs over and over. That's when she got a full view of her lips clamping down around the dildo as another orgasm crashed into her. Her female juices squirted out in generous amounts, pooling into the already soaked sheets beneath. She moaned as she tried to retain her focus but her eyes inevitably rolled back in her head in little more than a second. By the end of this orgasm, she was a panting wreck. "P-please stooooop..."

The droning sound picked up now, becoming more of an army of bees buzzing. Maybe an exaggeration but it was the best she could think to compare it to as her mind fell ever further into the pleasure of the sharply increased vibrations. Why wouldn't it stop? Why did it actively get further away from stopping? Maybe she screwed something up in the code? It was like it was treating her fulfilled desire and wish to stop as a job well done... or perhaps not good enough? And it was encouraging the program to increase its efforts. Every nub buzzed against her insides so many times with each thrust that she could almost go numb. So much pleasure that it was torture to some degree; over-pleasure. She started to laugh as her body futilely grasped at ways to change the situation but even that was cut short as she was taken by another screaming orgasm.

Unfortunately, the only one who could hear the screams was Persephone herself... unless she got ripped off with the soundproof apartment.