Messy Interactions

Twilight Sparkle closed her eyes and sighed quietly in resignation. The diagram in the thick, dusty, and inordinately old book, now faded after so many years, simply refused to make sense. She understood what the diagram was, it’s many nested loops and small dots with labels written in a truly ancient unicorn script was a representation of a solar system. The large loops were the orbits of the stars about each other and the smaller ones in turn represented the orbits of various planets. This of course was the problem, this congregation of astronomical objects the book was showing her was oddly similar to ones she had seen before. It was often depicted as a diagram of ancient Equestria before the princesses had control over the motions of the sun and the moon, both of which went around Equestria. Or at least Twilight had never given serious consideration that it could presently be otherwise, who would? Perhaps the stars in this ancient system were ones also seen in the night sky? If so, nopony had ever found a trace of them, if they had, her father would have told her, being one of the royal astronomers. He would surely have at least known about the knowledge of such an interesting group of stars and shared that information with her. She always did like to be kept up to date on all the latest advances in astronomy. Perhaps the diagram was simply ancient fiction, dreamed up by some bored unicorn scholar in his castle’s archive. But no, the diagram’s caption noted that even the original scroll it had been copied from for the sake of this book had itself noted that the diagram’s age was unknown and presumed to be quite old, and that the original labels for the planets and stars were from a language not known even then, and that scroll was now well over six thousand years old. So fact? Fiction? Presumably impossible to tell now, simply too much time had passed. And of course, the original scroll was the oldest copy of the system diagram ever found. The loss of even older vital information irked the lavender alicorn. Yes, Celestia had been quite studious about keeping the history of Equestria very well documented and archived, but there was nothing to be done about knowledge lost from so much longer ago. The history of pony civilizations extended back through time far before the Three Tribes Era, though what little of that was left was now nothing but cryptic, crumbling ruins dotted here and there amongst the mountains.

She turned the page over in frustration.

Anyway, it was too late at night for this problem now, and she was too comfortable to permit a minor annoyance such as this to ruin her overall good mood. Earlier that evening, she had put her signature to a few final documents in the stately office room she kept in Canterlot Castle itself, taken her shower where she had been vigorously cleaned all over by Princess Luna, who was herself preparing for night court, with blueberry scented shampoo and a curiously large loofah, then Cadance, having come down south for a visit from the Empire earlier in the week, had taped her up tightly in one of the thick disposable diapers made for her by Rarity. Its slick light suspiciously Celestia-colored plastic surface always glistened so nicely by fire or moon light. Then, the two of them had made their way through the secret passage extending out from one of the castle’s many basement levels out to the Red House. The most prominent of the Equestrian government- i.e. Celestia- owned brothels. She had spent some time there with Cadance who of course couldn’t resist her in that hot, wet diaper for long. The slight soreness under her tail spoke of just how much fun they had had there.

Of course just as they were finishing another of her best friends had shown up plus her little sister. Under more mundane circumstances she definitely would have stayed to chat but she knew Cadance well enough that between Rarity, her sister, and the unbearably cute and sexy Fluttershy there would be quite an orgy going on in no time. Honestly, she was already feeling a bit tired after her fourth time that night being penetrated by the largest alicorn cock she could take. It was time to go back to the Castle for a rest. Besides, she wouldn’t be missing anything that she couldn’t experience at a later time. All she had to do was ask, and a diaper play session would be organized within the day. She just wanted some time with a good book. Old habits did indeed die hard.

That then had been the cherry on top of the whole evening. Just as her introverted side had desired, she chose yet another near forgotten tome out of the Castle’s Library and joined Celestia herself in the ruler’s private sitting room. A place to snuggle up to her mentor and read by the light from the flames in the wide stone hearth until she fell asleep, usually nestled under one of Celestia’s wings. The entire time taped up securely in the warm, soaked diaper she had now spent half the day wearing.

Therefore, it was even more annoying that this night’s book had included the system diagram and associated offending lack of context.

“Something the matter Twilight?” Celesta asked quietly as soon as the sigh, however unobtrusive, had escaped her lips.

“Huh? Oh, it’s nothing, just some missing information in this book.” Twilight said glancing up as her mentor gave her a slight knowing smile. After all, Celestia knew better than almost anypony how much Twilight hated things that were left incomplete.

“Well, if the content of that book is half as old as I think it is you’ll just have to get used to it, I’m afraid.” Celestia said. The smile had turned almost teasing.

“So I’m finding out.” Replied the smaller alicorn, with a hint of sarcasm leaking into her words.

After a soft chuckle and a quick kiss behind Twilight’s right ear Celestia laid her head back down on the large red velvet pillow before her and closed her eyes again, resuming the same position she had been maintaining prior to Twilight’s little unintended emotional interruption.

Twilight couldn’t help but stare just a bit longer at the snow white fur and ethereal flowing mane of the Alicorn snoozing contentedly by her side. The dimming firelight from across the well upholstered and wonderfully cozy chamber off to one side of Celestia’s formal bedroom gave her a bit of a golden aura.

How appropriate, Twilight mused to herself.

Twilight turned back to the book to begin an investigation of the ancient charts and artworks catalogued on the next page, and found after a few minutes of effort and failed attempts resulting in captions being read three times over without comprehension that she was indeed distracted.

It was no one single thing. Celestia, the angelic pony now apparently quite sound asleep beside her keeping her feeling snug and cozy, the dimming fire in the hearth making it harder to read the tiny words crammed onto the pages, the way the extra thick diaper felt around her, perhaps the fact she had to use the bathroom quite badly now.

Ah, yes, that was probably it she realized.

Twilight, or more specifically her diaper, had indeed been quite wet for a while already by this point. In fact, she had given the diaper a good soaking nearly the second Cadance had finished taping the thing around her slim waist. Which had been what? Nearly ten hours ago now? In her deep concentration on the book Twilight had rather forgotten all about the diaper and how nice it felt on her. However, that annoying diagram had broken the spell, and now, thanks to the diaper she couldn’t get back in her groove, so to speak.

The irony did not escape Twilight for the first time that the diapers she had started to wear, conveniently provided by the princess as a young filly, supposedly to prevent distracting things like bathroom breaks from interrupting her study time, now had rather the opposite effect. Maybe that had been the idea all along?

This time, keeping the sigh inside her head, Twilight carefully closed the book with a quick flare from her horn and pushed it aside. Perhaps tomorrow she would continue with this same one instead of picking out yet another volume from the seemingly endless archives. But either way, that was a decision for the next evening and right now she had other things to consider.

Twilight gave Celestia’s sleeping form a sideways glance, almost wishing the princess to be awake at this moment. Twilight admitted to herself that this was even more fun when being watched, but Celestia had watched, and enjoyed watching, and perhaps done a bit more than just watching, Twilight go in her diapers quite a number of times before. If she missed this one there would be tomorrow or the next day to do it all over again.

There was something so enticingly and enjoyably naughty about wearing one’s own bathroom and having no qualms against using it for that purpose, Twilight thought as she raised her tail slightly.

All it took was for her to release the hold she was keeping on her anus and a huge squishy mass practically exploded into the back of her diapers followed by a thick, soft flow of poop the consistency of wet mud; a bit too squishy to hold its own shape that then pressed into the first mass and forced it to push further out into her waiting diaper.

As the giant goopy load expanded out to fill the back of the diaper, Twilight did sigh out loud again. Truthfully, it was closer to a moan this time.

Just as the massive mess began to slowly flow downwards to cover her waiting pussy, Twilight raised her hips off the soft rug under her and released her bladder once again into the diaper. The hissing sound she made as her pee splattered into the already soaked padding was surprisingly loud in the otherwise nearly completely silent room about her. She could feel a renewed warmth spreading down from her pussy and then between her legs in a steady progression towards the front of her diaper. She loved the feeling, not only because of the hot pee being soaked into her fur that the diaper didn't capture, but because of the way the thick absorbent padding firmed up as it became saturated, making for a wonderful bulky feeling between her legs.

She had finished her second wetting just in the nick of time as she felt the thick mass of her poop flow down completely over her now quite excited pussy lips.

This was simply too stimulating, Twilight couldn’t just go to sleep now, no way, not with this diaper on. What a mess! She had surprised herself with the quantity of poop she had let out to fill her diaper.

As much as she desired to do so, Twilight decided to not immediately sit up and squish herself down and around in her mess. No, for a diaper like this she was going to need to need some ‘help’. There was no way she was going to let a diaper with this much potential just sit there all night without being actively enjoyed. Perhaps she could extract herself from her present situation and return to Princess Cadance? After all, that pony, more than anyone, knew what to do with a messy diaper. The only problem was getting to Cadance, who was no doubt still back at the Red House, having a great deal of fun. Twilight would know when she was finished, she was sure, because Cadance would certainly bring at least Rarity and Fluttershy back with her and when she did Twilight would once again be involved in something kinky. The only way Twilight could think to get there without any chance of being seen was to teleport, a dangerous proposition without being able to directly see one’s destination. An invisibility spell would do no good either. They could not function on castle grounds due to charms woven into the ancient stone structure itself for obvious security reasons. Maybe if she put on a dress over the-

A large white wing curved up and over Twilight, then curled onto her back and side, pulling her toward the wing’s owner and pressing her into the silky soft fur of Celestia’s side.

All the sudden Twilight’s planning became pointless.