Unstoppable

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Cara the mouse loves to cum. The only problem is, most of the time, the orgasms stop long before she's ready for them to. With a little help from a friend though, Cara finds a way not only to keep herself cumming over and over, but a way to keep herself cumming that even she doesn't have any control over! :3


This short story was written for dontask1337 in February 2020! It contains F/Solo sexiness in abundance, as well as bondage and over-stimulation play involving consenting adults, and features two characters belonging to yours truly. :3

Unstoppable

"You sure you want this?"

Cara nibbled on her bottom lip, but groaned in desire, in desperation as she stared up at the kangaroo looming over her. Xander chuckled, his own face even redder than his roommate's cheeks as he nodded in acknowledgement of her assent and continued to strap her in. The mouse lay naked before him, padded leather straps already holding her feet at the ankles and her midsection close against the modified massage table on which she was lying. Her chest heaved as Xander strapped in her wrists, leaving her entirely helpless. Vulnerable. Utterly unable to get free, or to alter her situation in any way if she had second thoughts. But, she wouldn't. Indeed a big part of what made this whole idea so utterly intoxicating to Cara was the very fact that she wouldn't be able to change her mind. Once things got started, once Xander set her up and left her as he headed to work for the day, she would be at the mercy of what she had done to herself. What she had begged the 'roo to help her set up. Once things got going, it would be utterly unstoppable, and that thought alone made the mouse want to scream in pleasure even though a single moment of the long day ahead of her was yet to pass.

Once fully secured, panting as she begged the kangaroo to check that the straps were tight enough so there was no chance she'd be able to slip or pull her way free, Cara began to gasp and whimper ever more loudly. Glancing down the length of her body as Xander moved on to the next and most vital step of the set-up, she could see the front her friend, roommate and frequent lover's slacks tented by his obvious arousal. She could easily have begged him to fuck her first, to scramble up onto the table, lie down over her bound form and hump his way into her until he let loose, and had the timing been somewhat different Cara knew that Xander would have gladly accepted. Right now though he had like five minutes before he had to be out of the door if he didn't want to be late for work, and under these very particular circumstances Cara didn't want Xander to be late home for any reason.

Instead, she simply stared, trembling and feeling her body's wetness already streaming down the very innermost workings of her loins and over the underside of her plump ass before starting to pool on the softened, faux-leather padded table beneath her. She stared as Xander began to carefully examine, checking and double checking her pride and joy. Her custom built but well tested fucking machine, affixed to the table's weighted base by metal rods to ensure its motions would always be perfectly directed, and checked and double checked and triple checked over the last two months during long unoccupied stints and shorter but still glorious test sessions featuring Cara herself.

It was ready now. She was ready now, and as the kangaroo tapped at its touch-screen and the twin-dildos mounted upon piston-set arms hissed softly and began to creep forward towards the table and to Cara's already well lubricated asshole and practically gushing pussy, a shrill squeak of anticipatory bliss erupted from the mouse's lips.

"Ohhh god, please!"

Her back arched, or rather it tried as she was held down by the straps binding her to the table. Even as Cara strained against those padded restraints though, her thighs quaked visibly and a brief streak of wetness sprayed forth from her pussy, falling glistening in a good eight inch ribbon across the table's surface. She remained that way, tense and trembling urgently until the toys began to probe at her openings in unison, perfectly aligned and ready to slip further into her passages at another moment's notice. To the mouse's initial dismay though, even if she did know that this was all a part of the process which she had walked Xander through before he strapped her in, the toys stopped without moving even a fraction of an inch further forward. She moaned feverishly and tried to rock her hips, to stimulate herself with the dildo barely brushing against the opening of her pussy, unfortunately with limited success thanks again to her heavily restricted movement. Before Cara could get truly frustrated by her situation though, she saw Xander moving towards her once again with something in his hand, and gave a practically ear-splitting cry of renewed lust and delight.

"Oohhyesss... yesss, do it! Put it on me... oh god..."

Clutched in the kangaroo's hand was a small plastic tube with a rubber capped end, attached to a slender plastic hose which disappeared back into the internal workings of the machine. An ever so gentle hissing even softer than the quiet motion of the piston-mounted dildos initial movements reached the mouse's sensitive ears, and once again she gave a shriek and spattered the table beneath her with another trickle of anticipatory ejaculate as Xander guided the source of that subtle suction towards her throbbing clit.

"Yes! Yessssssssss!!"

The mouse screamed, her voice echoing around the thankfully detached cottage which she and the kangaroo shared as the tube made contact with her clit, and her whole body began to spasm and thrash as she felt her clit being sucked into the plastic enclosure. She grunted, she wailed, and far more violently than she had expected so early on, Cara began to cum before it could even fully engorge and draw out her clitoris' desperately sensitive flesh and before either one of the other toys set to attack her throughout today could even slip all the way inside her for a single moment. Her toes curled, her thick pink tail whipped from side to side beneath her, and the mouse's whiskered nose twitched wildly as the device kept suckling more and more firmly upon her clit until a good inch of flesh was within the tube. Even when she felt Xander close off the hose and seal it around her with no lessening but no further increase in the level of suction, the mouse couldn't stop wailing, shuddering and squirting both loudly and liberally for another fifteen or twenty seconds. Not only did it feel incredible but all the tension that had been building within her since she'd woken up at five that morning in anticipation of what she was going to experience today was released in that first overwhelming orgasm, while at the same time somehow only serving to make her hornier than ever as the mouse considered that this was truly only a brief fraction of what she had to look forward to overall.

Thankfully Cara didn't have to wait much longer for the rest of what she had been planning and craving for so long. Once he'd double checked the seal around her clit by gently tugging upon the tube wrapped around the mouse's most sensitive reaches, making Cara wail and beg for more as he effectively started to masturbate that swollen and pressurised nub like a miniature cock, all the rather flustered and crimson-cheeked kangaroo had to do was walk back over to the machine's controls. One last time he looked at his roommate and opened his muzzle to ask if she was absolutely certain that she wanted to commit to this, to being wired up to this device all day while he was at work with by her own design no possibility of escape or stopping it. But as he saw the look on her face, the way she was craning her neck up to watch him press the button and the absolute desperation and pure joy etched across every inch of her features, he chuckled and remained quiet. She had told him dozens, hundreds of times over the last few weeks as she planned for this and indeed the last six months as she'd been building and testing the device itself that it wasn't just what she wanted on some fleeting and over-ambitious whim. This machine and what she wanted it to do to her today was the fulfilment of a fantasy she'd had basically for as long as she'd been sexually active. It was her choice to make, and no matter how many times he asked, Xander knew that the mouse's answer was never going to change.

Thus, the marsupial took a deep breath, took one last lingering look at the mouse as his cock throbbed within his slacks, and flipped the device's main program switch.

Instantly, the two cocks pressed up against the mouse began to slowly but firmly press into her, sinking to their full depth within her pussy and ass in unison before almost immediately starting to pull out again with the same steady motion. Cara squealed. She squeaked in rapture and drummed the heels of her feet against the base of the table, only to give a strangled, ear-splitting cry as just moments later the vibrating motors buried inside those toys began to buzz urgently while they continued to slowly fuck her, and a secondary hose affixed to her clit pump began to apply oh so brief bursts of suction to the tube wrapped around the mouse's clitoris, effectively allowing it to start stroking or perhaps even suckling upon her of its own accord.

From that moment onward, Cara didn't know what else happened to Xander. The kangaroo might have headed out to work just moments later and left her alone, but for all the mouse knew he might have remained right there in the room with her, standing and watching the entire day. Either way she would have been equally oblivious, because once the machines started their glorious work upon her body, just as she had planned, they didn't stop.

"Ohhhgod... oh god, oh god, ohhh god, I'm gonna cum... g-gnnhahha... gonna fucking cum!"

The mouse grunted, hands flexing, tugging at their restraints as instinctively she tried to reach up and toy with her nipples as those two dildos plunged in and out of her, her body slowly realising that they were ever so slightly out of sync in their thrusts, and thus were steadily starting to diverge so that one was pushing inward just as the other was pulling out. The effect of this was that until their asynchronous motions brought them back into time again there wasn't a single moment where one of Cara's holes wasn't full of intensely vibrating goodness, and that fact along with the ceaseless pressure and suction upon her already achingly over-sensitive clit meant that it didn't take long at all for Cara to lose control.

"Aa-aahhhyessss! Yes! Yesssssssss!"

Her voice cracked, the mouse's screams ragged and wild as her pussy began to spasm and clench, as she felt herself squirting yet again, but this time with the stimulation from all those sources at once continuing while she did so. There was no respite, no mercy offered by the dildos as they fucked her and buzzed deep inside her, and as Cara's body quaked and her clit throbbed through her orgasm, the rhythmic suction upon it from the machine ensured that the mouse soon felt herself brushing up against the manic, blissful madness that she craved.

"Fmnfnnhhahhh!! Ahhhhhhhgod, again, cumming! Cumming! Mmnnhhghahhgghhaahh!"

Another orgasm crashed over her as the last one was barely beginning to fade, and Cara's whole body tensed, her eyes bulging as a guttural wailing escaped from deep inside her throat, and the pleasure grew too much to bear. It was so good, so impossibly and all consumingly good that the mouse wanted to pass out, but of course her body wouldn't let her off the hook that easily, and the machine working at her had absolutely no intention of granting her such relief. The mouse's body squirmed, and as it did so in what limited manner it could given the straps holding it down, she squeaked loudly, ears flushing an even deeper crimson and toes splaying and stretching out intensely as the vibrating toy within her pussy struck her g-spot. She was still cumming, still riding the high of that last orgasm as intense and nearly too much as it already was, but regardless of whether her body was in any way ready or prepared for it, the mouse began to cum again. Orgasm erupted through and over already extant orgasm, and for the first time that day Cara begged not to a person, not to a lover who could and would do anything to make her happy, but to an unfeeling, uncaring, and entirely unresponsive machine.

" Please!!"

That first time it wasn't clear whether she was begging for the dildos and the clit pump and all her body's orgasmic pleasure to stop, or to not stop. It didn't, of course. It kept going, and going, and going as the mouse thrashed and screeched and squirted until she could feel her ass sitting in a veritable puddle upon the faux leather, and hear over the whirring of the toys' motors and the panting and screaming of her own body the steady dripping of her juices trickling off the sides of the table and onto the firm, heavy base affixed to it to ensure that in her thrashing she wouldn't tip the whole device, and herself with it, over to one side.

"Fuck, f-ffuuhhahhh... please, I... oohhhgod, nnnhh... no... oohhh god t-too much! Please, I nnneahh... need... oh god, it won't... it can't stop... oh god oh god oh f-ffhhahhhhhyesssss!"

As the constant stimulation did begin to truly grow too intense for Cara to bear, still all consumingly pleasurable but with pangs of overly intense stimulation starting to arc through the more manageable pleasure like static shocks, she was at least able to recognise her predicament for a little while. To remember that she had asked for this, and that based on past experience the torment of over-stimulation was all too worth it for the pleasure it offered through any measure of discomfort. But as the dildos continued to piston in and out of her pussy and ass, as the vibrating motors inside them continued to hum urgently, as Cara's clit was suckled upon by the pressurised tube wrapped around it and as the writhing and bucking of the mouse's body repeatedly brought those toys fucking her into contact with more and more of her sweet spots, it became increasingly difficult to rationalise and understand why she was doing this to herself.

"Please, I can't cum again! I cc- hhaaaaahhhhhhhhhhhfuck!! Fuck yessssss, cumming, I... a-aahh... ahhhgod... nnn-hh, no... ooohhgod please, please stop! Please I... ooh god, too much! It's t-too... oh... ohhh! _Yes! God, f-fuck! Fuck yes! Again! _"

Time began to lose all meaning. Were seconds passing between peaks? Minutes? Hours? Lifetimes?It was all irrelevant anyway as Cara's mind became detached from the world, only able to know one thing for certain. That the sensations were too much, that it hurt to feel so good, and then, an inevitable few instants or eternities later, to forget all of that as yet another orgasm consumed her body and mind alike, until it ended and the torment of building to the next one resumed.

Soon, even any remotely coherent screams of pleasure or begging for respite were beyond the mouse. She didn't fall silent, letting loose all manner of squeaks and grunts and guttural sounds worthy of any wild animal, but there weren't even fragments of actual words audible within those maddened utterances. Her eyes bulged again and tears streamed down the sides of her face as she let loose a caterwauling howl and an almighty surge of ejaculate poured forth from between her legs with force enough to cascade out over the end of the table before striking any solid surface. Her muzzle fell slack-jawed and saliva dribbled down the sides of her face as for brief periods she lay limp and broken, still cumming, her pussy, her ass, her clit all still enduring the agony of their shared ecstasy but the rest of her body all but shut down in an effort to not be stimulated. Efforts which failed each and every time. And yet amongst those periods of quiet, and the times when Cara's echoing wordless cries were obviously begging for an end, or at least a pause to her lustful anguish, there were times when she wanted nothing more than for it to last an eternity longer.

Overwhelmed, consumed by what she was feeling; so angry at herself for her greed and her arrogance in thinking that she could not only take this, but subject herself to it with no safety procedures, no-one else there to possibly let her out early, Cara shook her head and screamed in denial of reality as despite her protests the machine continued to fuck her with the same brutally unrelenting motions that she had programmed it to offer. Just fifteen seconds later though as the dildos in her pussy and ass briefly aligned and thrust deep into her in unison once again, the mouse's glazed and glassy eyes were wide with rapture, and a mindless, whimpering giggle was escaping her lips as her pussy spasmed and her clit throbbed and she felt herself tossed away from the earth and out into deep space, swirling and flailing and trembling through darkness but surprising warmth and comfort in the throes of what in that moment of that long, long day ahead of her was already undoubtedly the most colossal and all consumingly incredible orgasm of her entire life.

If the pleasure had ended there, Cara would have considered the day a complete success. She'd cum longer and harder than any masturbatory or even shared experience with a partner had ever allowed, and now she was utterly spent, satisfied and...

...and yet, that contentment only lasted a fraction of a second in reality, because of course it wasn't over yet. After that wild multi-peaked orgasm had run its course, Cara grunted, she shook her head and she let slip a strangled sob as the stimulation continued every bit as intensely as it had through the most savage heights of the orgasm itself. Her clit burned as it was suckled upon even more. Her pussy and ass were afire. It had to stop. It had to stop! It wasn't a joke any more. It wasn't funny. It wasn't sexy. It was too much, and it absolutely had to st-

"_ Nnnnhhaagghhhhhh! _"

Cara screamed as she was driven by brute force to yet another orgasm, and once again all those protestations and certainties of her not being able to stand any more were torn away and replaced by a desire to never, ever have these feelings end. She howled, she wept and shrieked her way greedily, gloriously through that next series of surging, writhing and intertwined orgasmic peaks, and once again celebrated internally the success of this long, overwhelming day of pleasure.

Across the room, resting upon her bedside cabinet, the mouse's smart-watched beeped to signal the top of the hour. The mouse didn't hear it of course, but in that moment she was wishing that the day could have lasted longer. Cara found herself expecting that any moment now Xander would be arriving home after his long day at work and starting to unfasten her. She found herself wondering if maybe she could convince him to let her keep going, just for a little while longer.

It was ten AM.

*******

When five-thirty in the evening really did arrive, and Xander slipped through the door of his and Cara's home, he could hear the machine's continued whirring from down the central corridor of their small single-storey house. Hurriedly he moved towards it, having been torn between worry and desire all day thinking about what Cara was enduring at home. He pulled her bedroom door open, half expecting to see the entire apparatus tipped over on its side or Cara staring at the door with an expression of hatred upon her face for having let her do this to herself.

"Nnnhhhaahh..."

The mouse's glazed eyes did meet with his own immediately, but they were filled with anything but anger as he saw her still lying exactly where he'd left her, and she saw him after a billion lifetimes spent knowing nothing but the constant touch of her wonderful toys. Cara's lips were a little chapped from dehydration, and the faux-leather beneath her hands had been scratched through to the stuffing within by her fingertips, but other than that and a sizeable puddle surrounding the base of the table, even dribbling a way off its sturdy base and darkening the carpet around it, everything appeared exactly as he'd left it.

"Hnngh... mhhhahhh... hhahhhhhhhhhhhhhhhhhh!"

Xander walked over to the mouse even as she obviously began to cum once again, and though he reached the control panel of her wonderful and apparently successful homemade fucking machine just seconds later, he paused, and let the mouse endure that one last almighty orgasm before he touched a single control. He regarded her expression, her naked body, her absolutely drenched inner thighs and indeed the entire lower third of the table glistening with goodness only knew how many bouts of ejaculation, more still dribbling forth from inside her even now. Just like that morning he was already hard, but also just like that morning the kangaroo ignored his own desires as he enjoyed sharing in those of his dear mouse friend.

He waited until Cara was spent, until her grunts of pleasure became grunts of obvious though still excitable and pleasure-stricken distress, and shut off the device. The dildos withdrew. The clit-pump stopped suckling. For a moment he saw Cara tense up, and wondered if she was actually going to cry out and beg him to leave her there longer still. In the end though, the mouse simply collapsed limp against the table beneath her with a soft squeak, and remained there, chest heaving, eyes open but staring blankly upward, as Xander unfastened the straps holding her down.

He cradled her in his arms and carried her to her bed.

He disappeared for a few moments, then returned, and guided a paper straw to the mouse's lips, chuckling as she reacted despite her blank-faced, overwhelmed staring into the middle distance, and slurped a little at the bottle of electrolyte restoring energy drink he'd pulled from the fridge.

"So..."

Xander murmured playfully to his roommate as after having taken a little more of the offered drink and rested there in the comfort and absent stimulation of her own bed for a moment, she blinked, and actually seemed to look around as though aware of her location, and his presence at last. The kangaroo's own eyes travelled up and down the mouse's body in return, in particular landing upon her soaking thighs, her still hugely engorged and reddened clit sticking out a good inch from its hood, and of course Cara's flushed but wearily, giddily smiling face.

"...how was your day?"

The mouse giggled. She took a deep breath, closed her eyes to steady herself in preparation for her answer, and...

Xander snorted with laughter as about ten seconds later, a loud and unmistakable snore escaped the mouse's loosely open maw.

"Yup, that sounds about right."

He teased as he set the bottle of energy drink down on the bedside table, then pulled himself up to his feet and left her to rest. No doubt when she was up and about again she'd be eager to tell him all about her experience, but for now she needed to sleep, and he... the kangaroo blushed as he glanced down at his tented slacks... he needed to jerk off, while considering whether or not to ask Cara if she could build him a machine like hers.

By Jeeves

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