In the streets of Ponyville, Pinkie Pie was very clearly in Party Mode. It wasn't exactly easy to describe the things that happened to Pinkie when she was in full-blown Party Mode. Even other ponies who saw it happen weren't quite able to put it into words... Well, except for Twilight, of course- It was hard to find any situation that she hadn't at least read something about. Once, Twilight had compared Pinkie's party-preparation performance to an ancient Pegasus-tribe war technique; one where they entered an altered state of mind before combat. She hadn't gone into a lot of detail, other than saying it made them very dangerous, very fast, and gave them almost endless stamina. To Pinkie, that had sounded like any given Friday night.

Even though it wasn't Friday, she had a much bigger reason to hold a party right now (even though that was sort of hard to imagine). Princess Celestia herself had told Pinkie to arrange a party. And not just ANY party- Although any party mandated by a Princess was a pretty incredible one. But a party for the entirety of Ponyville. That wasn't just huge, that was nearly unprecedented. Well, nearly unprecedented this month. She was Pinkie Pie, after all, so town-wide parties weren't a total mystery. But this wasn't just any town-wide Pinkie Pie party, it was a town-wide Pinkie Pie party especially for the aftermath of Luna's big secret plan.

Now, some ponies who witnessed her gleeful bouncing path across Ponyville might wonder why she was so excited. And anypony who saw her actual plans and choice in decorations might be even more confused. After all, she didn't have any better of an idea what the Mare of the Moon was planning than anypony else... Right?

Well, no, actually, I totally do!

...I had been speaking rhetorically, Pinkie.

Oh! Well, I don't see what the art of public discourse has to do with anything!

I had also been narrating. You know, that thing you aren't supposed to interrupt me in the middle of? And what do you mean you know?

Pink-

-ie sensed it, right, right. Why is it that precise, anyways?

Dunno! But it does mean I know that Luna is planning to-

"AHEM."

Pinkie Pie spun around and looked at the door. Princess Luna had just walked in, interrupting her attempts to fracture the stability of the narrative fabric. Whether it was intentional or not wasn't entirely clear, but regardless, there was strict Sugarcube Corner protocol for when royalty came to visit.

"Oh, greetings Your Royal Majesty! Can I get you some tea so you can trick me into pouring waaaay too much of it?"
She chuckled under her breath at Luna's confused expression. She never ever ever let the Cakes live down that day, even when they weren't around-- Especially when they weren't around! It had been so cool to learn that Celestia understood the value of a good prank. And plus, she got to see a phoenix! Well, sure, it was a bit ugly at first, but then it went all fwooosh and it was so shiny and awesome and-

"...Ahem?"

"Oh! Right! Sorry about that, I got distracted by... Um, me."

"Fully understandable, dear Pinkie. And no, the tea will not be necessary. We merely wished to let thee know a bit about the nature of tonight's plan, so that thine party may be suit...able..."
The Princess of the Lunar Seat finally began to look at the decorations lying on the tables, wrinkling her nose in a brief expression of surprise. She was visibly just realizing that all the decorations were already exactly the right kind, complete with a banner. A banner naming and describing the very event she had made quite positive to tell nopony but her sister about.

"...Ahha. Well, that makes things simpler. And thou shalt not tell anypony, yes?"

It would be completely unthinkable to deny a request from a Princess, especially if she was about to hold a big impressive town-wide superparty on her behalf.
"Pinkie Promise!"

"That would be the one with the cupcake, correct?"

"Yuppers!"

"Then my secret is safe in good hooves. And now that said safety is confirmed..."
The blue alicorn leaned in close to her, voice dropping to a (sort of) whisper.
"...Dost thou have any of these "dough nuts", which I have heard tale of, available for sale?"

Pinkie grinned wide enough to just about split her lips. Without looking away, her hooves dropped down to the glass-fronted counter, sliding out a tray of glazed crullers. Moments like these were what made every day worthwhile.
"Princess, let me introduce you to my flaky little friends..."

--------

Even given how embarrassing it had all been in context, Twilight had never imagined how much talking about that trip to 'the shop' would affect her. She had spent most of the conversation flushed and flustered, and even now was still blushing. And now it was time for Fluttershy to talk about her and Luna's... very first time. The two of them had gone about things a fair bit faster than she had with Celestia, but then again, they had already kissed before, and... No, Twilight, just listen to Fluttershy's story first. You can question the developmental speeds of relationships later.

Her pegasus friend was slow to restart, and frankly Twilight couldn't blame her. She almost felt a bit better, now, about how far in the story her own "first time" would be. Yes, it had been nerve-wracking at the time, but now it meant she could avoid discussing it until she was good and ready.

"We... oh... Kept kissing, and it got more, um, passionate, and she..."
Fluttershy went quiet.

"Yes dear?"

"She... touched. Um, touched me."

Rarity held back a laugh.
"Well, I would hope so!"

Her friend began blushing, and her response only came as a whisper.
"No! I mean she touched my... flank. Especially... there."

She tapped her chin, thinking it over.
"Your tailhole?"

"No! It was my..."

Rarity leaned forward, eyes bright.
"Your marehood?"

"No... Not that quickly...My, um..."

She didn't continue, leaving the two of them to draw conclusions. Thankfully, the process of elimination was in their favor, since the only option left was....
"Ooooh! She was pressing on your cutie mark, wasn't she!"

All Fluttershy did was squeak and then nod, head bobbing quickly. But even that level of embarrassment couldn't hide her smile.
"It wasn't anything like doing it for myself, and I... Well, I've always been really sensitive... there."

Naturally, a statement like that just made Twilight more curious.
"Did you... you know, finish quickly?"

"Twilight! That is quite the assumption, thinking that she even climaxed at all from something as simple as a little mark-play. Although I suppose it must have been fairly intense, being a first time, and with a Princess..."

The longer Rarity talked, the more Fluttershy blushed, until eventually she started nodding.
"Yes. I... I got there, fast. But before I did, she was... Oh girls she was leaning over me and her mane was everywhere and she was so pretty... And her horn was right there, so I sorta leaned up and... licked. And we finished together."

They had been listening, but neither one of them could possibly respond. Twilight couldn't speak, utterly stunned, and Rarity was blushing blood-red and ducking down under the water as far as she could without ruining her mane. The pegasus, not having a horn of her own, much less any real connection to unicorn culture, just looked at them in confusion.
"Um... Girls? Was it something I said?"

The question broke her out of her shocked silence.
"Fluttershy! Do you... Do you even realize what you did?"

The other mare was clearly still baffled.
“I, uh... I did something that made her very happy?”

She facehoofed. Explaining the social intricacies of that would take far too long, so...
“Just, uh, go on. Forget we said anything.”

“Well, alright...”

Twilight did her best to relax as her friend went on with the retelling. It would have been a lie to say she wasn’t interested, but her attention wouldn’t hold... After all, Fluttershy clearly had no idea what her little show of affection had been, where a unicorn was concerned. It certainly wasn’t the same as casting a unified spell, but it was probably the closest any non-unicorn could get: An act of immense intimacy, usually used to imply that the giver was interested in a serious relationship. Of the long-term variety. Or, to be more accurate, the longest-term variety. And so now she was trying to imagine the ancient ultra-traditionalist Luna reacting to that. Apparently she hadn’t done or said anything at the time, but what if tonight’s announcement was going to involve it? Did Luna think Fluttershy meant that she was... Ugh, this entire thing is so frustrating!

“And so, when I was finishing the, um... I guess massage isn’t really the word for it. But at the end, I, uhm, oh dear...”

Rarity blanched.
“You did that again?”

“Maybe a bit... more than that?”

They stared at her incredulously. She coughed.
“Well, it was right there, and I had already been, well, licking again...”

The two of them blushed, but their friend was still oblivious. Rarity reached out of the spa to get a drink to steady herself, lifting an elegant glass in her magic.
“And so I might have, well... Taken it into my... mouth.”

There was the sound of glass shattering. Rarity spluttered and began cleaning the mess she had created, while Twilight couldn’t take it any longer-- She had to explain just what this meant. At the very least, so they could be prepared to let Luna down gently, or maybe not, or... Whatever Fluttershy planned to do because of this whole fiasco. So she explained, slowly and carefully, just what that kind of oral horn-play meant, to a unicorn. All of the ancient traditions that had built up around the act, and the way it signified a major bond and commitment. How it wasn’t really a far stretch from that to a proposal of marriage, and how doing it for anypony less than the one you absolutely loved was more or less impossible to imagine. As she kept going, Fluttershy’s eyes grew wider after every line. When she finished, the pegasus mare sat back in the soaking tub, looking completely dumbfounded. There was a moment of silence.

“I did WHAT!?”

--------

Luna leaned across the table in Sugarcube Corner, completely disheveled. At this point, she had discarded parts of her Regalia, let her mane flow loose and free, and sprawled halfway across the booth. Absolutely lewd sounds, smacking and slurping and suckling, came from her muzzle. Gingerly, paying utmost attention, she ran her tongue across the delicate hole in front of her, flicking across the surface to gather up more of the indescribable taste. At this rate, she couldn't tell which was stronger: The gaping empty need deep inside of her, or the sense of incredible fullness. This entire affair was sinful, abnormally unlike royalty, and so very very new to her. Finally, she was overwhelmed. Luna gave up, breaking away with a gasp. The deed was done, and she only had one thing to say to Pinkie Pie.

She looked up at the baker, mouth covered in crumbs, an entire plate of crullers lying decimated before her royal presence.
"May we... have another donut, please?"

"Sure thing, Princess! Do you wanna try cream-filled next?"

For reasons she didn't quite understand, Luna blushed, but nodded her consent regardless.