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It hadn't been too long since Stu had climbed up inside of his mate. Granted, time did work differently when crawled up inside of someone's vagina. Or deeper, as Stu had gone. Which needed to be addressed right away.

The reason unbirthing stayed strictly as works of fiction, was that female anatomy simply didn't work that way. The uterus, as it turned out, could stretch to accomodate a great many things. The cervix, less so. Far less so. After all, there was a reason it had taken the two of them over ten years of marriage to get to this point. Along with gallons of lube (sometimes gallons spent on even a single session), and patience to rival a buddhist monk.

Birthing was painful. Unbirthing, of course, was the same thing but in reverse. Which was to say, it presented its own challenges. One of them was the tremendous guilt Stu felt upon hurting his lover each time they tried. Even though Veronica insisted they were cries of pleasure, or even ecstasy, a corner of Stu's mind always doubted that she was telling the truth.

If cries of agony meant she was having a good time, then Veronica was just about having the time of her life. That was how their first few sessions went, at least. Their first dozen, in fact, or maybe more. But by now it was more of a patient affair. As it so happened, the body could get used to all sorts of tremendous, yet punishing, acts.

"Are you sure this is-" Stu began. His speech was muffled, now that he had worked his head and one of his shoulders inside. Although, while it was muffled, it was because he head was literally inside of his wife, as deep as it could go (anal vore notwithstanding, but neither of them had interest in that). So Veronica could still make out Stu's voice quite clearly indeed.

"Shut up, Stu. I'm working here." She said. Her vixen tail thrashed about, as her mouse husband broke her concentration. It was a curious oxymoron, to concentrate so decidedly on being relaxed. But there wasn't any other way to accomplish their task. Namely, she had a thing for pushing the extreme. Curling up your tiny husband inside of you was about as extreme as it could get.

It was no doubt the only reason they could get away with unbirthing at all. Not to say that Stu was actually tiny. And while micros did exist, they were rare, and kept to themselves. Not to mention that voreing one was roughly one-thousand percent illegal. Interestingly, the law got fuzzier the bigger a creature got. Stu was certainly no micro, although his birth certificate did label him a hybrid, which was true. So, unbirthing Stu (officially labeled as "vaginal vore," although in practice few people called it that) was only half illegal. Still, they took great precautions not to get caught.

The effect of his heritage meant Stu looked more like a perpetually small child, rather than a fully grown adult. Which, of course, made their relationship a little awkward to explain in public. It got easier if they roleplayed as mother and son, which they had come to take advantage of fairly frequently. Plus, Stu's size let them push the boundaries of what a body was capable of. Veronica had often frequented the underground clubs where illicit activities with micros were common. She relished in pushing that boundary further than probably anyone else ever had.

But damned if it didn't take some time to pull off.

It was getting Stu's other shoulder in which caused the greatest strife. He knew the drill, though, and started to snake in his other hand. It was slow-going, of course, because they had sprained Veronica's uterus before. She had described it as the single most painful experience in her life.

Suffice it to say, they never rushed this process ever again. Not even if it took hours to get the white mouse entirely inside. Besides, once they figured out about swapping oxygen tanks, taking hours to crawl inside was no longer an issue. They could last the greater part of a day if they wanted to. In theory, they could go even longer than that.

It was something they had talked about, but never in too serious a capacity. Stu had said he was open to the idea, however. Little did he know that Veronica fully intended to take him up on that offer. In a big, big way.

The moment the small mouse felt his fur catch, he stopped. The first rule of unbirthing, as they had discovered, was not to force a single goddamn thing. The second rule, of course, was that oxygen was key. Interesting that they didn't place that one higher on the list. Then the third, was that latex made everything easier. But Stu didn't care for it, and Veronica much prefered the feeling of a natural unbirth, so to speak. Women didn't give birth to latex babies. Similarly, the large vixen had no interest in putting a large latex baby inside her.

Not that Stu was a baby, although he was closer in size to one than he was to anyone else. But the principle behind it was the same. But going for a natural feel added at least a gallon of lube to the act of swallowing her mate deep inside of her.

They had a system for signaling between them physically, in case Stu was unable to speak. But they were practiced enough by now that Stu could typically get away with talking, even with his breathing tube still in place. So there were plenty of ways to let Veronica know to pump in additional lubricant. But she was way ahead of him, because she felt the tug against her cervix far more acutely than Stu had.

In mere moments from feeling his fur catch inside of her, Stu became flooded with additional lube. It marked the instance in which Stu was no longer able to speak. If he tried to talk now, all he would get was a mouthful of lube, which they had learned during oh so many "dry" runs.

That was quite purposefully marked in quotation marks, because it only signified that Veronica's reproductive system wasn't involved at all while the two of them were training. But there was nothing dry about taking long-term baths in lubricant, and figuring out how to keep Stu submerged safely for hours at a time, not to mention keeping him restricted as well. There wasn't room to sprawl out and get comfortable inside of his mate. So he had to practice being curled up for hours at a time.

He had gotten used to it, and the experience was absolutely worth it. Even though it had taken a LOT of work and effort to reach the point they had.

Veronica, similarly, had undergone intensive training. They made cute date nights of it sometimes. Practicing had turned out to be an excellent way for them to bond together. Even though during such times, Stu was balled up and sometimes not terribly able to communicate, and Veronica was often fully engrossed in stretching out her cervix. It was still something they were able to work at doing, together. It made their nights of practice some of their favorite nights of all.

And oh, what practice it took. Veronica could almost remember the first time a micro crawled inside of her. It had taken weeks of insertion practice with long sounds (the sorts typically used to penetrate a guy's urethra) to get comfortable even attempting it. It had hurt back then, but there was also something electric about it. Knowing a living, breathing person was deep inside did something to her. It was visceral. Not to mention that something about pushing that extreme was, itself, electric.

It almost certainly made her a masochist. But there were guys who got off on extreme cock and ball torture. The things some of these guys did to their balls in particular were just mesmerizing. What she really wasn't any different. It felt best with a partner, of course. But she need one to get off in that particular way. Long dildos existed, after all. Thick ones, too. And anal beads, and inflatable plugs, and non-inflatable plugs, which Stu sometimes helped her insert clear into her cervix. All in the name of stretching it out, and training it up.

All for moments like these.

The lubricant tube Stu had brought inside with him squished healthy amounts of lube directly into Veronica's uterus. It kept coming and coming, to the point where her belly was no doubt distended already. Even though there was still so much room the two of them would have to make for Stu. With one arm already folded inside, it was relatively easy to scoop the lube and slather it all around Veronica's tight, restricting opening. The angle was awkward, of course. But Stu hadn't religiously gone to yoga classes for years and years in order to not be flexible, and bend his body in all sorts of weird ways.

He took advantage of that maneuverability now. He so gently pulled back out his hand which wasn't quite lubed up enough, but kept Veronica stretched by twisting his body, and bringing his other hand down at the same time. Then he flexed, as best as he could. to get a little lube to the lower half of his body.

Well, they still had probably three quarters of body to go or so. But who was keeping track?

Thankfully, the first part of the hardest part was done. Stu had stretched Veronica out to about the widest she would need to be to take him. Plus, almost enough lube had seeped out to make the process as easy as could be. Then he splayed his legs super awkwardly, yet with incredible purpose. He motioned one foot up and down exactly five times.

It was the signal for Veronica to put pressure on her abdomen, in one firm, medium-hard push. Yes, their system of signals was that incredibly broken down.

Veronica obliged, and the pump shot copious amounts of lube down from her cervix, and into her vagina. Yet, with the majority of Stu's body taking up that space, it mostly succeeded in spurting out loads of lube onto the tarp they'd spread on the bed. As ever, it hadn't been much trouble smuggling a tarp into their hotel room for the weekend. Getting it back out, slathered with lube and bodily fluids galore, was always the more awkward affair.

The pressure applied nearly served to help push Stu out of her uterus along with the lube. It would have undone so much painstaking progress. But Stu had braced himself by hooking his shoulder around the cervix rim. It meant he wasn't going anywhere. Furthermore, in tandem with Veronica letting up on her abdomen, Stu made his push additionally inside.

As lubricant squished out of that deepest part of his mate, Stu made effort to squish his other arm in. The volume in Veronica's belly stayed mostly the same, and the industrial amount of lube had more than done its job. As had their hours of gentle, borderline meditative progress.

Stu's arm slid in perfectly naturally. In a singular motion he pulled himself deeper inside with his elbows. Then with his upper arms. He felt, as well as heard, Veronica murr, moan, and cry out in a mixture of pleasure and pain. Yet they both knew her limits well, and while Stu was making for a great push inside of her, he wasn't pushing her too far. Rather, they were exactly at they had been striving for all this time.

Stu's upper body was now inside.

At this point it was Veronica's time to shine. Over their years of practice, it had become easy for Stu to gauge the elasticity of her cervix, by virtue of the tremendous pressure it never failed to apply. He had less of an eye for how stretchy her uterus was feeling, because once he got through her cervical opening, it all just felt like a squishy void. No doubt in part to the ridiculous flood of lube which always surrounded him.

Granted, it was a constricting void as well. Being up inside of his mate maybe felt like a warm cocoon. It was comfortable and comforting. As though he were wrapped in a heated, weighted blanket, which closed in on him from every side. The sheer compression felt oddly like returning home.

There was no doubt something biological going on with unbirthing, or perhaps even vore in general. However, neither science nor politics cared to study such a thing. Stu didn't give much thought to it either. What he knew was it felt amazing to be curled up inside his mate. He came to crave it if too much time had passed between sessions.

It made for as much an anniversary gift to him, as it did for his mate. Because Veronica relished in being so full in equal measure at least.

It wasn't merely a factor of pushing her body to the limits. When caring for her small mate in this most intimate way, it fed something spiritual inside her as well. For obvious reasons, it felt just like she was carrying a litter of pups to full term. Like she was giving life.

The fact she was giving life to the love of her life was what made it the most fulfilling experience of her life.

For however long the delicacy of the operation took, it was beyond worth it, every time. She could, by now, handle the size of insertions deep inside her which would make the lesser of women faint. Yet stretching so wide as to take in her entire mate, that never failed to be a challenge and a half. She was up to it, however. They both were.

Plus, it wasn't as though the entire experience was pain. Sure, the initial insertion could be a bear if you weren't ready for it. But if you were relaxed, and ready and prepared, and you knew what to expect and you used the right amount of lube - taking anything could be smooth sailing. That went for small dicks, to big dicks, to thick ones, to anal sex, and yes, it applied to vore as well.

This was to say that, after adjusting to Stu's entire chest wedged inside her, that feeling of fullness quickly overrode every sense she had. Her reward for swallowing down her mate was to give unbirth to him. To give him future rebirth. And to cradle and nurture him. To love him. Not to mention that the act of swallowing him was its own reward. It was, however, on a bit of a timer. So Veronica set about her work quickly.

Being stretched to her absolute limit was, of course, possible. They had done it countless times by now. But over half the time, if she wasn't quick to get Stu all the way in, the pressure of her cervix being forced open so wide got to be too much. And the nature of her anatomy (or any anatomy most likely) made it so after stretching out that muscle so wide, it got far too tender to make another attempt for at least a few hours.

That had been a hard lesson to learn, the first time she had taken Stu entirely inside of her. It had taken hours to get him back out, to the point where she almost called one of her girlfriends in panic, to bring over another oxygen tank just in case. It was a rookie lack of preparedness which they vowed never to repeat. They could proudly say that, ever since that day, they practiced unbirthing in only the safest of ways.

Which was to say, if she was getting sore or too stretched out down there, and Stu was only halfway in, it was far easier to push him back out than it was to hurry and force him deeper inside. It was far safer as well. Which meant that, all too frequently, they had to stop in the middle of unbirthing, leaving both of them disappointed and deeply unsatisfied.

But this was their ten year anniversary, and Veronica would be damned if they didn't make the most of it. Besides, she had special plans for herself and her mate. They were secret plans, and she'd been looking forward to them for months now. She wasn't about to miss this opportunity. It added up to one thing.

One way or the other, Stu was going to get inside.

In fact, Veronica was so excited to enact her plan, that it became quite fortuitous that Stu was still unable to speak. He might have been getting close to it though. All he had to do was clear out a small pocket which was free of lube, so that his breathing tube had no chance of getting messed up. Under the guise of wanting to keep everything well lubed up, Veronica pumped more inside. She loved how unaware Stu was of her plan, because he flexed his right foot twice.

It meant that he approved, or that things were going well. Little did he know that, while their unbirthing session had basically only just began, Veronica was about to speedrun the rest of it. She still had an entire day planned for them both, after all.

Time to get to business.

Veronica didn't stop at just a few pumps of lube deep inside of her. She kept going. And going. And going. They had gotten into the habit of bringing far too much lube with them on any of these excursions. Not to mention the vats of it they kept at home. They never used all of it, but Veronica planned to change that today.

She'd keep a container or two to help get her husband out later on. That meant she had so much to work with in order to get him all the way in. She took full use of that knowledge now.

Her belly was starting to distend from how much she pumped in. At a certain point, Stu started to wonder what she was up to. Still she didn't stop, and before he could protest she clambered into a crouching position. She could nearly kneel with her mate partway inside her, but he wasn't quite that far inside yet. Yet she had been practicing without his knowledge, and she had a system down which was sure to surprise him.

She rocked back and forth, making sure that his position inside of her was right. She wanted to get him inside swiftly, yet safely. Then, confident he was where he needed to be, she started to bounce.

It was light at first, as though testing the waters. She quickly built up speed, however, and timed her bounces with rhythmic presses against her already swollen belly. It had been a curious discovery, to learn that pressure against her belly, as though to help force Stu out, could actually serve to get him deeper inside. Although, it did track. It was the same advice people gave for anal sex. She had simply scaled that advice up. Might she add, her experiments had been met with tremendous success.

Once she had her timing down, she rose up almost concerningly high. Not high enough to pull Stu from her uterus, but the mouse certainly wasn't quite sure what she was up to. Mainly he knew she was trying to get him inside, and he was just trying to follow her lead.

This was always how it worked with them. Veronica did what she needed to, to get him all the way in. It always included a lot of wriggling, and a lot of positional shifts, to try and get comfortable with him part way inside. Then, to try and coax her body into accepting more.

This time she gave her body no choice but to accept the half-micro mouse inside her. When she rose she squished her belly with all her might. It put tremendous pressure on Stu, to the point where he got an instant headache from it. Yet he tried to keep his wits about him. Plus, he would soon come to discover that intense pressure on his upper half wouldn't last long.

Veronica's action shot excess lubricant from her swollen uterus, evenly coating each inch of Stu's body still wedged in her vaginal canal, and leaking out loads of excess onto the tarp below them. Then, when she came back down on her rodent husband, falling onto the deepest point he had reached this session, she didn't let up. Instead she flexed and squirmed. Once again she let up pressure on her belly in equal measure to sliding down onto her mate.

In a way, it felt like her uterus was helping to suck her mate inside.

Whether or not that was actually how it worked, the effect was the same. Stu was sliding inside, more quickly than ever before. Far more quickly, in fact. Almost immediately Veronica was able to slide entirely onto her knees. Coincidentally, this put Stu's extremely erect cock jutting out just outside of her sex. Barring the lower half of an entire mouse between her legs, you might have thought the cock belonged to her.

Veronica lamented that she didn't have time to play with it. That was usually their pitfall, because for as intimate an experience that unbirthing was to the both of them, it was also remarkably sexual. As evidenced by Stu's rock hard member. Although, given that he was a micro hybrid, not to mention that he was a mouse, it wasn't a particularly large cock at all. Especially given their mutual proclivity towards unbirthing, she actually couldn't feel it inside of her during ordinary sex at all.

Yet they still found plenty of ways to have fun. What they were doing now, for instance, was far more fun (and rewarding!) than any night of ordinary sex could ever be.

And so, Veronica remorselessly continued sliding down her mate. In an instant his small, erect cock folded downward and vanished, as yet more of him was worked up inside of his lover.

Needless to say, it caught Stu rather by surprise. His primary method of telling how far inside he was, was by feeling Veronica's cervix applying crushing pressure along different parts of his body. It was most typical to get his shoulders worked inside, and for the two of them to take a rest. Veronica wriggled atop him, then, or sometimes he wriggled inside of her. It was a combination of enjoying feeling him inside of her, as well as seeking premature pleasure from being so full.

Sure, it wasn't as full as it was possible to go. But it was a fullness all the same. And rewarding for what it was.

This, however, was practically lightning speed. He still knew how to work his body inside of her without challenge. Not only was it just like the simulations, but it was just like all the other times they had unbirthed. He knew when to start curling up based on how far down his body his vixen's cervical ring was squeezing. So he followed that same protocol now. Even though his eyes bugged out when she kept going. And going. And going some more.

"Ack!" He vocalized, or tried to. It was a rookie move, and lubricant flooded into his mouth. Such was the pressure of the fluids inside of his mate. Just like he'd trained on doing so many times, he pushed out all the lube he could, sucked in any which had gotten into his breathing tube, and swallowed it to clear his airway as fast as possible.

To a casual observer, you might never have known he very well might have died just then. Although it did call to his mind that they really did need to finish their prototype facemask. Not needing to worry about managing any equipment while floating happily inside his mate would be a godsend. But mainly, it would make insertion far more seamless.

Although, at present things were going seamlessly enough. No sooner had Stu worked out his air supply situation when his lover's cervix signaled the next step. She had swallowed him down to the hips, and skipped over playing with his dick entirely. As in, his hips were clear through her vaginal canal, and at the entrance to her uterus.

It was time to curl. He might have been a little slow on the draw, actually, but there was at least a little leeway when stretching out this part of her. He acted quickly though, because he didn't want to be the one responsible for holding up the operation. Even if he was still bewildered at how quickly he'd been swallowed this time around.

This was the stage of unbirthing where they had to work together. Stu folded his arms tight against himself, and made the motion of tumbling forward. At the same time Veronica angled herself just so, and held her hands lightly against her belly. This helped to support Stu as he rolled his way forward. As he did, she slid down along his legs, which were so well lubricated by now that she basically couldn't feel them at all.

In mere moments Stu's hips were past her cervix, and into her uterus. And from there, it was a done deal. Stu continued to tumble inside of his mate's belly. Meanwhile, on the outside. Veronica helped to spin the mouse in the direction he needed to go. As he somersaulted in place, he pulled his legs up inside him.

They had long learned that, at this stage, it was better for Stu to pull his legs in, opposed to Veronica continually trying to push. Instead, she focused only on maintaining balance, and staying as loose and relaxed as she could. It took a lot of faith and confidence in her mate. Feeling something squirm to this degree inside of her was one of the more unnatural aspects of the process. She loved feeling his small movements inside of her under ordinary circumstances. Or, at least, as ordinary as a circumstance of unbirthing could get. But it was something else entirely to have someone doing full rolls inside of her.

Yet the commotion was shortly over. Stu said goodbye to the outside world as his feet slipped through his mate's sex. At that point, what with her cervix so recently stretched wide open, pulling his legs up was a cinch. He was able to stop his rolling once he got more or less upright. Then he simply tucked his legs up underneath him.

Sliding. Enveloping. And closing. Stu breathed out a sigh of extreme comfort when he felt the final pressure of cervix pass over his feet. All that remained was to sweep behind him and pull his tail inside, which he did. Then it was done.

The mouse had successfully been unbirthed.

Sure, he was a little sexually frustrated. Typically they played with his cock at least a bit before swallowing him all the way. But at least this was a guarantee of getting him in all the way. And that really was the ultimate goal. He wasn't sure how long Veronica intended to keep him in, although with it being their tenth anniversary, he suspected he would be in it for the long haul.

In truth, he would have it no other way.

Besides, sexual frustration was easy enough to fix. They had long agreed that he had reckless permission to hump, thrust, and masturbate himself while inside of his mate. It was a liberty he took frequently. Today was to be no exception to that rule.

He didn't start jerking off right away, however. He wanted to give Veronica time to settle, what with having just swallowed a small mouse up inside of her.

Veronica was grateful for that period of rest. She took some time to take stock of her situation, and of the pure fullness and joy she felt inside. It was the spiritual hit of care which got to her the most, even more than the sexual satisfaction behind being so ultimately full. She was satisfied beyond even her own understanding. Let alone trying to explain her present ecstasy to detractors of the act. Sure, vore could be dangerous if performed carelessly.

But if done correctly, it was the most rewarding act there possibly was.