Twilight knocked on the door to Fluttershy’s cabin. “Fluttershy? Are you okay?” Of course Twilight was worried. Their plans for today had been set in stone for almost two weeks, or so Twilight had assumed. But here she was, almost an hour after they were supposed to meet up at the cafe, and no sign of Fluttershy. The only possibility that Twilight could think of was that something was wrong. And it had to be something big and sudden, or else Fluttershy would have told her somehow. There had to be some reason she didn't show up. She knocked again.

There was a shuffling sound inside the cabin, followed by a small commotion, and then the door opened a crack – only a crack. Twilight caught a glimpse of a blue-green eye and a sliver of yellow and pink and nothing else, not even the interior of Fluttershy's home. “Oh. Hello Twilight. I, um. Think I'm going to have to cancel our plans today. Sorry.” Fluttershy's voice was quieter, even moreso than usual, and had a rough, throaty quality to it, like she had a very bad cold.

“What? Why?” Fluttershy sounded sick, yes, but if it was just a cold, surely she'd have at least ventured out to let Twilight know, or at least sent Angel Bunny with a note. No, it had to be something more than that.

“Something came up.”

“Fluttershy, what's wrong.” It wasn't really a question, not the way Twilight said it.

“Something, um. Personal.” Fluttershy groaned, deep and throaty and much louder than was characteristic of her. “Very personal.”

“Are you sick? I've been reading up on common diseases and I think I can probably give you a hand if you'd just let me-” She grabbed the door and pulled, only to find herself stopped by a chain lock.

“Um. Sorry. I'll be fine. It's just a personal thing.”

Though Twilight couldn't actually get into Fluttershy's home, she could get a better look. Everything seemed in order, if a bit cluttered. But Fluttershy's home was always somewhat cluttered. But Fluttershy was a different story. More of her was visible with the door more open, but not much, especially considering the fact that she seemed to have shuffled her way to being mostly hidden behind the doorway. There was just enough of her visible to confirm that something was off. Her hair was dishevelled and wild, and her fur was almost soaked with sweat. She was wearing a bathrobe, clearly hastily thrown on as it was barely closed over her substantial breasts (or at least her right breast, which was the only one visible from Twilight's perspective.) A good third of her nipple was visible, bringing a slight blush to her face. But that was hardly the main reason for Twilight's blush. No, what really stood out was the smell.

The overpowering stench of sex oozed from Fluttershy's home.

“Sorry,” Fluttershy muttered, followed by another throaty groan that it dawned on Twilight was actually very much a moan.

“Oh. Personal. Right, heat. Sorry, I probably should have known.”

“Yes. Something like that. Sorry. Um, we can maybe try again next week? Sorry.”

“Right. Next week is fine. See you then.” Twilight forcefully shut the door, turned around and awkwardly marched off. Fluttershy let out a sigh of relief that very quickly turned into another moan. “Gnh. Took her long enough.” She took a step back from the door, letting the bathrobe drop and removing her other hand from her crotch. And not a moment too soon – there was absolutely no way that she could have held her three foot long, throbbing horsecock out of sight any longer. She glared down at her head, leaking a steady stream of thick, glistening precum inches from her face. “I swear, you pick the worst times to go into rut on purpose. What do you have against me having a social life?” she muttered at the beast through tightly clenched teeth, her head-sized breasts heaving with the effort of holding back her orgasm. “And of course she comes right as I'm in the middle of masturbating. Half an hour earlier, Twilight, really. Your timing couldn't be worse.” The flow of precum increased to a torrent, gushing from her urethra. And then she finally let go.

Her orgasm lasted twenty four minutes.

Author's Note

Fluttershy cannot hide her gargantuan boner and it's making her social life even harder to deal with.

Not too happy with that ending there, but all in all I think it turned out okay.