Author's Notes:

Contains: Anthro, Futa, Masturbation, Copious Amounts of Paperwork

Written by: Ragabash

Being a princess was a rather multifaceted occupation. It involved listening to your citizens, conversing with diplomats and rulers of other nations, planning the growth of your own, defending your lands and your people. And apparently also making elaborate plans to make other ponies save all of Equestria without ever telling them what your intentions are. Although Twilight has yet to experience the not-receiving end of that particular aspect.

What she did experience is the most boring task: Filling out paperwork. But anything involving paper was her forte and while it's not on the same level as books and checklists, she found it hard to get sick of it.

And it was rarely a lonely activity. She often got together with Celestia and others for it. Many of the various documents, forms and whatnot concerned relatively high matters, that couldn't be settled by a single pony alone. Especially not a rather new princess from a small town. Important international affairs even had diplomats from other nations coming to Equestria, essentially making them a diplomatic event. Even though, at the end of the day, it was still all about putting the right words on the right piece of paper.

However, none of that was a concern now. This day, things were quite a bit different than usual. There was a lot of documents to fill out, but none of them so "tricky" that there was need for many other ponies to assist. Arguably, Celestia could have done it all by herself, but she still requested Twilight to help her.

This wasn't the only thing that was different. She also insisted in doing it in a... less formal environment. That is, her bedroom. Twilight was pretty sure that this was not very proper, the documents were still important, after all. But as long as they approached the work with the necessary seriousness, it shouldn't matter where they did them.

She was not prepared for just how informal Celestia wanted their work to be.

The two princesses sat a small table in Celestia's room, pens and several sheets of paper lying on the top. There was not enough room to place everything and work comfortably at the same time, so several stacks were placed on the bed. It wasn't suited for such work, but that wasn't Twilight's greatest concern. What really bothered her were their clothes. Or rather, the lack of them. To get more comfortable, the older princess proposed that they'll work in their underwear and even though she knew that it was hardly proper, Twilight couldn't refuse.

But now, sitting there like that, she wished she had. At least, partly. It wasn't a good condition for work, as she found herself getting distracted by her mentor. Really, anybody would. She had a great, curvy body that was only emphasized by her lingerie. Especially her ample breasts, supported by black, lacy bra, were quite the eye candy and constantly in Twilight's view. Occasionally, she shot a glance straight at them and only the fear of getting caught prevented her from doing it more often. That the thin fabric let quite a bit of pink shine through didn't make it easier.

When Celestia stood up to get more documents from the stacks, the younger alicorn could see even more of her. Her garter belt, stockings and, of course, panties were of the same style as her bra and made her seem both alluring and dignified. Particularly the latter, that hid quite much, but at the same time drew attention to her large round butt. As she went to the bed, she even seemed to sway it a bit, but maybe it was a delusion on Twilight's part.

It sure had quite an effect on the younger pony, that even made her forget her initial feeling of inadequacy of her own white underwear, that couldn't be any simpler. Her panties even seemed rather odd, as they were somewhat... "spacious" for a girl. But that made sense, considering her unusual anatomy. That was more obvious, now that a large bulge stretched the fabric. Twilight was glad for the table, that blocked the view.

But of course, it did nothing against the feelings that made her erect in the first place. And short of Celestia dressing more adequately, nothing could be done at all. Twilight tried, but she couldn't take her mind off the older princess. Just enough to actually do her work, but even then her half-naked body was still in a corner of her mind, reminding her just how much she liked to gaze at it. And what she would love to do with her.

Which was a lot. Starting with her amazing chest. She would lovingly fondle the soft breasts, squeezing them just a bit or more, tease her rosy buds with her tongue, lick and suck them, making sure that each nipple gets pleased, finally take her erect penis and place it between these large ti...

"Twilight, could you please get me the decree about cake ingredients, please?" Celestia suddenly asked.

That made Twilight snap back into reality. "Y-yes, princess!" she answered nervously.

This was bad. Not only was she getting deeper into it, which did nothing to ease her arousal, but if she stood up, Celestia would be able to see... it. Fortunately, at least that could be prevented. Moving her hands in front of her crotch, she got up and quickly went to the bed, making sure that her back was facing her mentor. Looking down herself, she could see a wet spot on her panties, right were the tip of her erection was. It wasn't surprising, after her fantasy, but that didn't make Twilight feel better.

To distract herself a bit, she focused on the paper stacks. For better or worse, the requested sheet was quickly found. It was very odd for the ruler of Equestria to be personally involved in such a trivial matter, but it was important to Celestia. She wanted Equestria's cake to be on the top and if that meant to make regulations like that, so be it. Even over the minimum and maximum amount of sugar, or even if there should be a maximum at all, she brooded for weeks.

Basically, she really loved cake.

Not that it bothered Twilight. After all, it went all to the right places. That small pudge on her waist sure rounded her overall looks up, but what really made it great was her bubble butt and thick thighs. It was the body of a mature mare, that could take all the things Twilight wanted to do with her.

Like, squeezing every part of her body, especially her butt cheeks, kissing up her legs until she arrived at her most private spot. She would please her with her tongue, lap up the juices that ran out of the slit, until she reached her climax.

But that would only be the beginning. Afterward, she would place her beloved princess on the table and start the main act. At first, she would only rub her dick on her butt, but soon she'd spread her legs and thrust into her pussy, slow and steadily. Then, when she thought it was time, she'd move upwards and fuck her right in the a...

"Twilight?"

The younger princess snapped out of it. Her breathing was heavy and her penis was twitching.

"Are you alright?" Celestia asked concerned.

"Y-yes," Twilight quickly replied, looking behind herself. "I just needed a while to find it."

Her doubtful expression made clear that the older mare wasn't buying it. But she didn't dwell on it further.

This was bad. Really bad. Unable to contain her fantasies, Twilight was getting hornier by the minute. And there was nothing she could do against it. She'd have to excuse herself to the bathroom, but she couldn't go out like that. And if she got dressed, Celestia would be able to see how hard she was. She had no choice but to endure it.

Hiding herself again, Twilight went back to the table, sat down and gave the decree to the princess, then turned back to her own paperwork. And, involuntarily, her arousal.

Again, she tried to focus on her task, but it was even more futile than before. Of course, she had fantasized about having sex with her mentor before, but it was never that bad. But then, she never saw her in a near-naked state like that. Her gaze lingered more on Celestia's breasts than before, while her mind played out all the things she wanted to do with them and the rest of her body.

Grasping her breasts firmly, she'd thrust between them, her hard cock rubbing over the flesh of her soft tits. Lost in her pleasure, her movements were fast, motivated by the need for release. Feeling it coming near, she let go of Celestia's chest and pulled down her head on the level of her hips. Without even waiting for a reaction, she pushed her cock into the mouth of the princess, repeating her earlier actions. Her lips and tongue felt even greater and the climax was approaching soon and with a final thrust, she found the release she craved so much.

This also made her wake from her daydream. And nearly immediately, she was terrified. Not only was she still staring at Celestia's breasts for who knows how long, her hand was clearly holding her penis, where a familiar feeling, similar to what she just felt in her fantasy, was dying down. The wet feeling of her drenched panties left no ambiguity about what happened.

Twilight was filled with shame and blushed heavily. Awkward as it is, to continue staring at Celestia's chest, she didn't dare to look up at her face. She might have sat there forever like that, if the older princess didn't say something.

"I'm sorry, Twilight."

"Uh, what?" Why should the princess be the one to be sorry?

"I thought that my nakedness would affect you," Celestia explained. "But I didn't think you'd react that strongly."

"You... planned this?" Now, Twilight finally looked up. The older mare looked rather awkward herself. Not something one saw often.

"Not exactly. I just... noticed something about you, that made me think you might be attracted to me." Celestia paused. "But I didn't really expect you to masturbate right in front of me."

Twilight wanted to retort that she didn't want to do it, but then decided not to. Whether the body of the princess made her masturbate intentionally or made her lose control over herself that she did it subconsciously, it didn't make that much difference in the end.

Finally, she noticed that she was still holding her now-softening penis. Her hand was wet from her semen, that by now seeped through her panties and dripped down, staining the carpet. Now, she really need to go to the bathroom and, at the same time, really couldn't go outside. Quite a mess she was in.

"Don't worry about it," Celestia, who now stood beside her, said with a warm smile. "It's my fault that this happened." He smile turned more mischievous. "And I'm willing to take responsibility."

At that moment, it dawned Twilight that her orgasm had just been the beginning...