Twilight had nothing in mind to do, as she just intended to wait for the Princesses’ explanation. She walked around the marketplace of Ponyville, in hopes of browsing for something to buy.

She encountered only Pinkie however, after crashing into her. When she opened her eyes, she found herself on top of Pinkie who was lying on the ground and had her arms wrapped around Twilight, whose muzzle was buried in Pinkie’s chest(something Pinkie noticed).

The scholarly mare then got up and helped Pinkie as well, apologizing for crashing into her. “Hey, wanna bake?” Pinkie asked, her cheeks red (something Twilight did not notice). The bookworm nodded. They then both walked to Sugarcube Corner.

Pinkie noticed the note posted on the door to Sugarcube Corner, and read it out to Twilight.

“Dear Pinkie, we left the Corner to restock supplies for the youngsters. Pound and Pumpkin have finished all the raspberry punch. Love, Carrot and Cup Cake.”

“Are they really that hungry?” Twilight asked.

“Weirdly,” Pinkie wondered. “They barely drank breastmilk, according to Mrs. Cake they didn’t want to most of the time, but when they got weaned to solid food, they suddenly had large appetites.” She led Twilight to the Sugarcube Corner’s kitchen after closing the door. “Can you prepare some of the eggs and flour for me, Twitwi? I’ll just go and write my reply on the door so the Cakes will know I’m back.”

Twilight nodded, using her magic to carry the heavier bags of flour while she held in hand the lighter and more fragile eggs. As she placed the ingredients onto the counter, she used her magic to take the flour sieve from the rack. Meanwhile, Pinkie scribbled her reply note onto a piece of paper, using her all-too-familiar pink crayon. She then went outside and tacked the reply note on top of the note the Cakes left for her, for more visibility.

After, she went back to the kitchen, seeing Twilight already sifting through the cookbook in an attempt to anticipate the recipe. “Oh, Twitwi…” Pinkie sighed with a giggle.

“Huh?” Twilight asked, tilting her head sideways.

“I’m following Pinkie Sense recipes!” The partypony cheered, causing Twilight to go pale. “Not the Pinkie Sense again…” she thought.

In a flash of energy and puffy pink, the baker had thrown in a myriad of ingredients, all sharing the common denominator of high sugar content, all the while having already mixed the flour and eggs into a dough.

“Bee-tee-dubs, Twitwi,” Pinkie said, while she partitioned the dough. “Could ya turn the dial of the oven at160? Oven’s gotta pre-heat.” Twilight obliged, while noticing that Pinkie’s skirt was flipping upwards every now and then, she could have sworn that the pink mare wore no undergarments.

After Pinkie had put her prepared pastries into the oven, she sat down on Twilight’s lap, exclaiming “Lappy sit!” and rubbing on Twilight as she did so. Twilight, whose thoughts were occupied by what she thought she noticed, was confidently sure now. Pinkie did in fact go commando. Her brain raced, as she could barely resist grabbing Pinkie and bringing it up.

The party-thrower then stood up and started to browse a nearby cupboard, her skirt flipping over again. Twilight’s eyes could see her friend’s marehood glisten with moisture.

“No way… Don’t tell me she…” Her thoughts were interrupted when her skirt flipped up, thanks to a sudden growth of a purple stallionhood; veins, sack and all.

Twilight recalled the first magic ray that the Princesses blasted, specifically towards her, Applejack, and Rainbow Dash. “So this is their payback for walking in on them doing it?” she thought.

Pinkie glanced at Twilight, noticing that her bookish friend had grown a friend. She then moved her backside, pointing it towards Twilight. “Oh Twitwi…” she called out. “Do you have any suggestions on what to bake?” she asked with a smirk, wiggling her butt.

Twilight, having approached Pinkie Pie, grabbed her waist, her member brushing against the party mare. “Oh… I have one…” Twilight said, spreading Pinkie’s lower lips, and poking the entrance with the tip of her new shaft.

Pinkie moaned as her tongue lay out. “Yesss… Twi…”

Twilight huffed through her nose, as she entered Pinkie abruptly. This backfired on her, as the sudden stimulation scoured through her nerves and into her mind, her eyes rolling in response.

“Pinkie… you’re so snug…” Twilight said with a grunt, “but your butt is so soft…”

“Start thrusting!” Pinkie hollered, relishing the sensation.

Twilight started thrusting, grabbing Pinkie’s mane with one hand and her chest with the other. “How—hngg—did—nn—you know?” she asked.

“My—uhhnn—Pinkie Sense—mmm—saw the egg yolks—ohh—in a cross—Uoohhh!” Pinkie was taken aback by Twilight nibbling on her neck. “Oh, Twitwi… The Princesses doing it really got you going, huh?”

Twilight then momentarily licked the area she nibbled on. “Doesn’t help that they gave me this hard thing…”

“Let’s get you calmed down, down there!” Pinkie moaned, wiggling her hips and teasing Twilight’s piston, getting it much closer to climax.

Twilight then nibbled Pinkie’s ear, as she furiously pounded Pinkie after grabbing both of her breasts.

“Ohh—yess—I’m bouncingggg—”

“This—is—for—no panties—”

Twilight then quickly pulled her shaft out of Pinkie’s snatch.

“TWILIEEE!!”

“PINKIEEE!!”

Jets of seed rushed from Twilight’s member, showering Pinkie with a coating of gooey white. Pinkie’s nethers started spraying on Twilight’s base, mixing with the cum as it dripped, both mares gasping for air, spent from the sudden sexual sojourn.

“We… gotta… clean up…” Pinkie huffed.

“Yeah… before… the Cakes…” Twilight added.

They both staggered while Twilight used her magic to manipulate cleaning cloths to wipe off evidence of their tryst. Pinkie, after fixing her clothes, planted a light peck on Twilight’s horn, causing the unicorn to blush.

“Wh—wha—was that for?” Twilight stammered.

“It’s a secret?” Pinkie said with a playful sticking of her tongue out, performing the Pinkie Promise to herself. “I’ll tell only when the time is right…”

Twilight sighed, knowing that any follow-up question would lead into a nested gryphondoll of Pinkie Promises.

Author's Note

My first attempt at writing TwiPie, have mercy on me

Enjoy and I hope you like it!