Crepusculum

The luminous, strikingly gorgeous moonlight flowed over Pinkie Pie's slim figure in smooth waves, cresting at her never-still eyes and eyelashes. "Super-fantabulous par-tee, Twilight!" she exclaimed as the first wisps of night air reached her skin. She gave a giddy hop from the wood floor of Twilight Sparkle's treehouse to the rough dirt of Ponyville. "You should do these more often!"

The unicorn blushed. "Glad you liked it, Pinkie. But parties are more your forte."

"Yessir, but that doesn't mean that you don't throw a super-duper good party!" Pinkie glanced around her friend's shoulder at the remains of a delicious cake Spike had baked and assorted streamers and misplaced books scattered on the floor. "It's pretty apparent that we had a great time."

It'll take forever to clean up, Twilight thought in dismay. But it was worth it to see all their smiles.

"Yeah, it's pretty apparent." she said.

"Well, I should really get going. Mrs. Cake wants me to make a special cake for Lyrica Rhapsody and Dakota's wedding!" The magenta mare licked her lips and gazed into the distance. "It's gonna be three tiered, with humongous helpings of creamy white frosting all over it..."

Twilight scrunched her face slightly at the words "creamy white." It probably was simply odd timing, but a strange tingling began in her legs when those words were spoken...

"...And there's gonna be little pony figurines at the top! And they both have the cutest little wedding dress and suit, it's going to look fantastic, Twilight!" Pinkie went on. "Rainbow Dash just happened to be walking around in Enjoyment for Foals when-" she paused, her blank expression lost- "Come to think of it, Dashie never mentioned why she was in a foal's toy store anyway..."

The unicorn began to blush furiously, the odd sensation tickling a mare's special spot between her legs. A sudden candle was lit in her head when Pinkie spoke, and she felt a familiar feeling began to creep it's way into her psyche. She replayed the quote in her mind-

"Come to think of it, Dashie never mentioned..."

"Come to think of it, Dashie..."

"Come to think of it..."

"Come"

"But anywho, Dashie was walking around in the My Little Human aisle at the store and she found the adorable-est pony figures buried under a bunch of human ones! Seriously, those things creep me out. You know, the eyes don't move and the hair color is insane- black with pink highlights?!- and the cheap comb they come with is completely useless and-"

"Pinkie Pie, I think you have to leave." Twilight gritted her teeth and narrowed her eyes, fighting to keep herself under control.

"But I haven't told you about the My Little Human blind boxes yet!" Pinkie whined as Twilight gently pushed her out the door. "It's sooo hard to get exactly the one you want, and sometimes you get one of the stupid recolors of the one that you want with the blonde hair but really you want the one with the curly brunette hair-"

"Pinkie, I will do anything for you if you just go home." Twilight Sparkle pleaded.

"Anything?"

The unicorn couldn't hold it in much longer. "Yes!" The reply came out as a droning shriek through her teeth.

"Thursday night? My place?" Pinkie raised an eyebrow. "Bring your socks?"

Twilight comtemplated this, but only for a split-second. "Okay. Now please go home."

"And your sweater?"

"Sure. Leave, please."

Pinkie squealed with glee. "Okie Dokie Lokie, I'll get the bed extra fluffy!" With a devious wink she hopped into the darkness, towards a single light that was her home.

Just as the last hair left Twilight's sight, she slammed the door shut with one hoof and used the other to propel herself into the center of her messy abode. Her horn glowed and instantly all the candles, minus one which she brought closer, flickered into oblivion and with a flash of purple Spike suddenly found himself in Rarity's boutique. He smiled at his surroundings and began to creep up the velvet stairs.

Twilight cawed like a wild animal and spread her hind legs wide to the world, then took a deep breath and made one hoof slide from her side to her chest. It tickled, but she paid no mind as she squeezed her eyes shut.

The hoof made its way to where the legs connected to the main body, and without a second thought it slid into her nether regions. It made a wet squeak, but it was quickly drowned out by Twilight's loud moaning. Whether it was of happiness, relief or pain she was not quite sure herself.

One hind leg began to twitch slightly, and her ears fell flat against her skull. Although only one dim candle lit the entire library, she saw bright, abstract figures dance across her closed lids. The breath she held in for so long escaped her in a sharp whistle that could faintly be heard from outside the treehouse, despite the thickness of the bark.

"Oh," she whinnied, "yes!"

She could feel the sticky juices covering her hard hoof, giving the lubrication she needed to soothe the feeling that came over her so suddenly. Her eyes clouded and her cheeks flushed a vibrant crimson. She thought in the back of her head what might have been the consequences if Spike- Celestia forbid Pinkie- saw her in this state.

Little did the studious unicorn know, two hot-pink ears poked over the edge of the closest window, accompanied by a pair of wide eyes. Ice blue irises stared back at Twilight, showing no emotion.

Soon her level of pleasure decreased little by little, and she felt satisfied about what she had done. But from Twilight's eyes came not a tired glint, foreshadowing her quitting for the night-

They were sparkled to life with the urge for more.

Twilight rolled, with the grace of an obese cat, onto her side and curled her hind legs towards her front most ones. All the while she could smell the tart juices splattered across her hoof in random patches, and hungered for more.

“Like fine art,” she thought aloud.

She smiled like the devil himself as she raised the topmost leg, revealing a tiny pink stripe nestled between light lavender fur. It seemed to pulsate, drawing the mare closer as if by some insane magic.

"Kiss me, Twily..." it seemed to whisper.

"Who are you, oh disembodied voice?" she replied in a daze, her voice thick and cracked.

"Who am I? What a silly question, Twilight Sparkle!" She had a feeling deep in her mind that the voice belonged to- the stripe?

"Well, it didn't sound that silly in my head..." Twilight could smell the contents of the stripe as she came ever closer.

"I'm Twilight Sparkle, for Celestia's sake!"

Twilight didn't respond at first. "Really? I'm Twilight Sparkle! Nice to meet you."

"Enough with the formal chatter! Kiss me already!"

Twilight Sprinkle stopped short of laying her lips on her other pair of lips. "Wait a second- you're my-“ She couldn’t finish the sentence, so awkward it sounded in her head.

"Shut up small horse and kiss me!" came the angry reply that reverberated down her thighs.

"If you say so, Mrs. Sparkle!" Twilight leaned in, as far as she could go before her neck broke in two, and gave her lips a wet kiss. She eagerly licked some of the juices that stuck to her tongue.

"More!"

Twilight leaned back into the fray, giving multiple, deep kisses that made her body tremble. Twilight moaned in response, but urged Twilight on with the occasional snap and chuckle.

Soon both were getting bored of this tedious deed of bending and kissing, so Twilight turned to Twilight and said with more than a bit of enthusiasm and said "Stick your horn in me, dear Twilight!"

"How does that even work?" Twilight pondered. She thought back to the diagram of the pony body she made for Celestia- the princess never told her what she was using it for, though- and how brittle and delicate a pony's spine was. It would surely snap if one tried to stick most of (or all) of one’s horn inside.

"Think of Pinkie Pie," Twilight argued, "If the laws of physics do not in any way, shape or form apply to her they most certainly do not apply to you."

"You raise a good point, Twilight...” She paused. “I'll do it, only because you're so good-looking."

Twilight blushed, the color showing easily through her lavender coat. "You're too kind! If anything, you are the looker in this relationship!"

"Oh, my!" Twilight fanned herself with an alternate hoof.

"Oh indeed!"

The two laughed heartily for a few moments, the sound ringing clear to their visitor's awaiting ears.

Suddenly Twilight stopped her laughing abruptly and took a quick look around their dim surroundings. Twilight watched in confusion as she did so.

"I forgot what we were doing." Twilight said after she stopped surveying. Twilight nodded her approval.

From outside, Pinkie Pie was fighting every nerve in her body that screamed "Jump through the window already!"

"No!" She sat down in the grass, her hooves crossed over her chest. "It is obvious Twilight is having a hard time dealing with the fact that me, Pinkie Pie, the bestest party pony in Equestria, invited her over on Thursday. The sheer thought of me and she, in socks, must have driven her to insomnia! I bet she's counting the hours 'till Thursday comes."

She sat there, staring into the dark depths of Ponyville, for a while, simply drinking in the tranquility. Her huge eyes blinked only once.

Then she catapulted herself into Twilight's treehouse, her fourth wall shattering hooves leading the way and her ever-fluffy mane following close behind. She landed elegantly among the remains of the broken window, did a backflip, then touched the ground next to a crimson Twilight.

"Twilight! I knew you would go bonkers at the thought of me and you in a bed with socks! I just knew it, I tell you!" Pinkie exclaimed.

Twilight quickly shuffled her hooves, covering her exposed pink stripe and moving to a position that didn't seem so suggestive. "Heh, this isn't what it looks like?" she whispered.

Pinkie Pie suddenly gained a look of composure one might have never guessed appear on her face. She smiled and looked Twilight deep in her purple eyes, the mischievous smile returning.

"Your secret's safe with me, Twilight." She said with a wink.