Author's Note

This one kinda ran long... and kinda got away from me I think. I was trying to pump it out before my job interview today and lost track of time. As in I still have 2 hours so I could have taken my time with it, sort of. But... well... the dream sequence idea came to me at the last second.

5. Elasticity

Twilight stretched again, twisting left and right. All things were as expected. Her ribs, spine and muscles prevented her from twisting her front half completely around. Princess Celestia had mentioned mere days ago, however, that Alicorns were far “stretchier” than a normal pony. How stretchy, exactly, she hadn’t elaborated. Luna might though. Teleporting to Equestria, Twilight asked the guard if Luna was around.

Up in her tower, fourth door on the left. She’s been awake for the last couple of days reading a new book series. Twilight’s wings fluttered happily as she made her way to Luna’s library. It had to be a library after all if it had books in it. The guard hadn’t elaborated. Counting the doors as she got to the tower, Twilight knocked on the fourth door on the left. A few moments later, it opened.

Luna looked disheveled. Her mane, though still flowing, was twitching awkwardly in places. Her wings were up. She was sweating profusely. “Did… I interrupt?” Twilight asked. Luna didn’t answer, merely looked around, lit her horn, and dragged Twilight into the room.

The room was dark. There was no light from what Twilight could see. Was Luna reading by horn-light? Her answer came when Luna’s horn lit some candles. The flames were blue, casting a gentle light over the room. It wasn’t exactly a library, but there were books everywhere. Walking over to one, Twilight used her magic to pick it up.

Her face flushed as she saw the cover. A very much exposed stallion posing for the artist. His dark mane and tail flowed in a breeze. His eyes were half closed, staring in the direction of the sun. His cock was draped across the muzzle of a mare with a similar appearance to him. “Marked at Birth”. Looking at Luna, Twilight’s face flushed darker. The room wasn’t a library. It wasn’t even technically a bedroom. Luna was half sprawled on a large cushion, one leg strapped into a leather strap and lifted.

Luna’s magic turned the pages of a book as well as slowly rubbed her sex in circles. This wasn’t just any room. It was Luna’s private “reading room”. “I’ll… uhm… I’ll just go.” Twilight said, backing towards the door. She stopped when Luna changed tactics. No longer was her magic stroking her slit. Now it produced a large dildo from the other side of the cushion.

The dildo looked to be about as thick around as one of Twilight’s hooves. She shouldn’t watch, really. She was surprised Luna was even doing this without provocation or prompting. She simply let Twilight into the room and went back to doing what she was doing. Twilight watched as Luna rubbed the dildo along her slit, still reading her book.

She didn’t want to move closer. She didn’t need to. Something, possibly Luna, bid her to approach. Walking slowly towards the cushion, Twilight stopped as Luna’s magic spread her sex open. The dildo didn’t look like it would fit, it seemed far too large. With some effort, it disappeared into her sex. Inch by inch, Luna’s sex spread around the large dildo until it was as deep as it could go. The head of it was nearly visible in Luna’s abdomen.

“You wished to see me for something?” Luna asked. Her voice had a slight catch in it but that was expected. She had something the thickness of a mare’s leg inside her.

“Y… yes. Sorry, this is just a bit awkward.” Twilight paused for a moment to gather her thoughts. “I’m trying to see what the Alicorn body is capable of now that I’m an Alicorn and… I don’t want to ask Celestia because she’s my mentor and it feels weird to talk to her about things like this but you’re my friend and not my mentor so it doesn’t feel as weird to talk about things like this with you and I’m rambling and I don’t know how to stop please hemph.” Twilight was silenced, thankfully, by Luna’s magic.

“You wish to discuss sexual topics.” Luna said. Twilight just nodded then shook her head after a moment. “Yes but no? Hm… if I release your muzzle, do you promise not to ramble on?” Twilight nodded and Luna’s magic disappeared from her muzzle. “Do explain.”

“I’ve started experimenting with different kinks. To… see which one I like the best. You already know I… ate a miniature clone of Celestia. I also tried bondage with Rainbow… which wound up with a small me inside my womb that… digested. I think. And then the other one with you and Celestia and Cadance Flurry…”

“Where you became our good little slut.” Twilight blushed and nodded. “Proceed. What are you experimenting with this time?”

“I… well… I already know Alicorns can stretch. By which I mean their bodies are semi-elastic when they want them to be…”

“Did you want to see just how elastic they can be?” Luna’s question was gentle, much like a mentor instructing a student. Twilight nodded and Luna smiled, removing the dildo from herself, and setting her book aside. “You may approach my bed, Twilight. As you said, we are friends, and you did enter while I was… entertaining myself.” Twilight nodded again and walked closer to Luna’s bed, stopping at the side of it.

Luna smiled and lit her horn, pulling Twilight up onto the bed. “As you did with Rainbow Dash, we will set some parameters. Ground rules I believe the two of you called them.” Twilight nodded. “Good. First, during this experiment, you belong to me. You are my property to do with as I wish.” Twilight nodded again. “Second, if I bring another into this, you will indicate if they are not welcome silently. Do not speak to them unless they speak to you, or I ask you to speak to them.” Another nod. Luna smiled. “It seems you are quite the submissive. Very well, while you are here, you are my pet.”

Twilight nodded. “First, I will show you how flexible and Alicorn can be, and then I will help you flex yourself.” Luna stood and walked away from the bed before sitting on the floor. “Observe.” Twilight watched as Luna scooted her hind quarters forward while lowering her head down. Her eyes went wide as Luna’s own muzzle met the folds of her sex and slipped inside. She kept bending until her head was stopped by her own horn, at which point she finally removed her head from her sex.

“Now, we will see if you can do thus.” Twilight nodded and climbed off the bed slowly, sitting in front of Luna. Luna took her in her magic and turned her around, pulling the smaller mare tight against her chest. “I am going to bend forward. You will move your waist forward as I did mine. If you do it incorrectly, I will punish you. If you do it correctly, you will receive a reward.” Twilight nodded and Luna started. She shimmied her waist forward, which did earn her a light slap on the rump, but it wasn’t painful. She was a first timer doing this, punishing someone for their first attempt wouldn’t aid them in succeeding. Once Twilight had reached what she assumed was the limit of her bending, she tried to tap Luna’s thigh.

Luna kept moving. Twilight hips were as far forward as they could go but her chest kept bending. She could feel her ribs attempting to stop her and then suddenly disappearing from their proper place. They weren’t popping out of joint, nor were they completely disappearing. They were simply moving.

It was a slow process, much slower than when Luna did it on her own. After a few minutes, Twilight’s muzzle was against her own sex. She couldn’t bend any further though. Her back was starting to hurt. Tapping Luna’s thigh, the two of them straightened and Luna draped herself over Twilight’s back. “You did very well for your first time. I assume it was your back?” Twilight nodded. “Expected. The first time I did this, my back hurt as well. Now, to show you how elastic Alicorns can truly be.” Twilight watched as Luna stood up and walked over to a door to a connecting room.

Opening the door, two other ponies walked into the room. Twilight just watched them enter. One was a stallion with a pale blue coat and a light green mane and tail, the other was a mare who was basically his opposite. Light green coat, and a pale blue mane and tail. “Now, pet, I want you to choose. Which of these two do you want?” Twilight stared at her for a moment before realizing she, herself, looked different. She didn’t look like Twilight Sparkle. Identity protection for a national heroine. Twilight pointed at the mare and Luna lead them both over, pushing the mare onto Twilight’s lap.

The mare fell softly and gently rested her head on Twilight’s lap. She’d received instructions already. “I want you to watch me, pet. Observe and learn.” Luna said and Twilight turned to watch. Not a word escaped her. Luna made the stallion sit down on the floor before her magic turned the two of them around. The stallions back was to the two younger mares. Luna stood over him, her sex winking with need.

Twilight watched as Luna lowered her hips slowly until the stallion’s head was pressed against her sex. She thought that was as far as it would go until Luna shifted her hips. First left, then right, then she started lowering again. Twilight’s eyes went wide as she left the bed, the mare following behind her. Luna’s vagina had spread around the stallion’s head. She was using the muscles in her hips and vagina to open and close it around the stallion as she lowered her body.

Inch by inch, Luna’s very mouth-like vagina took the stallion in until she stopped at his waist. Standing up to her full height, Luna lifted the stallion from the floor, lowered her chest, and let gravity assist as she took him the rest of the way. Her belly bulged out as a fully grown stallion came to rest in her womb. Panting, Luna stood straight and turned around. “Now… you will do the same with your mare.”

Twilight turned to look at the mare then turned back to Luna and beckoned her down. Still panting, Luna lowered her head and tilted slightly as Twilight leaned up. “I… uhm… I don’t think I can do… that… I’m a sub… I can’t…” she stopped, blushing as she stared at the floor. Luna stood straight and watched Twilight for a moment before it dawned on her.

“I see. That makes things slightly more complicated. But only slightly.” Luna said before looking at the mare. “I suppose I will have you both then.” The princess of the night said. The mare looked up at her, confused for a moment, until Luna sat down. The mare, still lying on her side, let out a squeak as Luna’s rump came down on her head and shoulders. Within moments, Luna’s belly was one whole pony larger. Twilight pouted since she didn’t get to watch this one.

“Now, Twilight, since you are a submissive, we will do something different. You wish to see how elastic an Alicorn’s body can be. Two is not my limit. Nor is three. Celestia’s limit is five.” Twilight watched as four more ponies walked into the room. “Turn around.” The younger princess blinked and looked at Luna before standing up and turning her back on her mentor’s sister. She jumped slightly as Luna scooped her up from behind, her hind legs bending forward. Looking over her shoulder, Luna had her entire rear half in her maw and was steadily swallowing her.

The ponies that just entered the room, assuming they were going to be swallowed next, walked around in front, and sat, waiting for their turn. Luna gave two hearty swallows, sucking Twilight in until her head rested on the lunar princess’s tongue.

“Follow.” A command spoken through magic, the four ponies stood and followed Luna into another adjacent room. This room had mirrors on every wall. From her position in Luna’s mouth, Twilight could see Luna’s sex. It was dripping after taking in two ponies. She could also see the bulge of her belly where the two ponies were moving. Luna’s throat bulged obscenely with Twilight’s body pressing out.

“Watch.” This command was to Twilight, who simply watched from an angled mirror as the four ponies started climbing into Luna’s folds. Two at a time, a pair of stallions pressed their muzzles into Luna’s folds before pushing their way inside. Twilight could see every flex of the princesses vaginal muscles as the stallions were taken inside.

By the time they had disappeared, the other two ponies were ready. But they weren’t commanded to follow their companions. Luna gave them a silent command and the stallion mounted the mare. Twilight blushed as she watched him have his way with her. Until Luna started backing up. The mare looked up just as Luna’s rump came down on her head. The stallion moved slightly and continued to have sex with the mare as the mare started disappearing into Luna’s ponut.

A few hearty thrusts from the stallion and his paramour was completely encapsulated by Luna’s ass. He didn’t even get to cream the mare he’d started with, covering her rear hooves and Luna’s ponut instead. Luna still wasn’t done. Twilight watched as Luna’s magic tipped the stallion over backwards and plunged his rear hooves into her rump. This time it was quick. A couple strong flexes and he disappeared inside her.

“And you make six.” Twilight’s eyes widened as she turned back to the mirror in front of her just as Luna’s throat pulsed around her, sucking her into join the three ponies already in Luna’s stomach.

Her eyes opened a moment later, laying on Luna’s bed. The lunar monarch sat beside her, reading her book once again. “What… what just happened?” Twilight asked. Luna paused, looking at the younger princess.

“Well done Twilight. You exceeded my expectations.” She said, smiling. Twilight blinked, wondering what Luna meant, until she felt something move in her stomach. Looking at herself, her eyes went wide. Her stomach was absolutely enormous. She could feel five ponies inside her doing… stuff.

“What… what happened?”

“I took you into the dream realm. Everything you experienced, everything you watched happen, was within a dream. You observed me devouring and unbirthing five ponies before finishing with you as desert. In actuality, you were the one who swallowed and unbirthed those ponies. I merely observed. The sixth, yourself, was the catalyst for you to wake up. You did surprise me, if I am honest. I did not expect you to take to it that well.”

Twilight stared at her stomach, unsure of what to think. As if unbidden, a scroll teleported to her side, and she scratched off something. Her list was going well.