Rainbow Dash let off a satisfied sigh. “Okay, everypony: dismissed. If any of the clouds from Manehattan get here on a draft, you know what to do.”

The squad of pegasi saluted their captain and flew off. Cloud Kicker and Raindrops tagged along with Rainbow. She turned as she glided down. “Something wrong?”

Raindrops dove down slightly faster to catch up. “No, no, we got everything done on our end, and patrol duty won’t be any problem. We’ll keep Ponyville out of the rain while you’re away.”

Rainbow Dash slowed down. “So what’s the matter?”

Cloud Kicker flew on Rainbow’s right. “We need some advice.”

That got Rainbow Dash to stop entirely. “Can we do this quick? I’m kinda meeting somepony.”

“No problem.” Cloud Kicker waved her hoof apologetically. “We just wanted to know how to train for stunt flying.”

“Stunt flying?”

Cloud Kicker nodded. “Yeah, like recovering from a twister. You know, the kind of stuff they test you for when you try to work your way up to B-level?”

Rainbow Dash slapped herself. “Of course. Sorry, I totally forgot about that. Umm, best way to practise that is to practise your turns. Start your turns fast and wide, then make it narrower. Keep your hooves in while you turn, then stretch out when you’re going straight again, it’ll stop you from flying off.”

Raindrops nodded. “Okay. So turn first, no twister practice?”

Rainbow Dash nodded. “Go slow first, then try to do it out of a twister. I don’t need to tell you to be careful with twisters, do I?”

“No, ma’am.” They both nodded.

“Good. Oh, and remember to stop and land if you’re starting to feel dizzy. It’ll sneak up on you if you don’t. And practise over water or some hay bales so you’ve got someplace safe to crash.”

Cloud Kicker nodded. “Got it. Thanks, captain.”

“That’s what I’m here for.” With that, she was off.

Okay, I’ve got my saddlebags, I’ve got some money, and I’m… headed to the train station, of course. Twilight said she’d put that in my head as a surprise, that’s fine. She’s not gonna do anything crazy to me, not after last time. She’s still my friend. She’s more than my friend. She’s… something.

“Howdie, stranger!”

Rainbow Dash snapped her head around to find Applejack trotting up beside her. “Hey, AJ. What’s up?”

Applejack kept up the brisk pace. “Nothin’ much, just the usual. Where’ve you been? I ain’t seen you around the farm for weeks.”

Rainbow Dash looked up at the skies to check for any colleagues. “Yeah, Cloud Kicker and Raindrops are going for a promotion, so I put them on farm duty, give’em more of a challenge. It’s not a problem, is it?”

Applejack shook her head. “Nope, not a problem at all. If you think those two can handle patrollin’ the skies, I’m fine with it. So where are ya headed?”

Rainbow gulped, but tried to hide it. “I’m meeting Twilight to go someplace.”

Applejack raised an eyebrow. “Someplace?”

“Someplace with books, I didn’t catch where.”

“Oh, right, makes sense.”

The train station came into view. Rainbow’s heart sped up. Good, now I just need to find Twilight and hope nopony else I know shows up.

“Rainbow Dash, darling!”

Rainbow suppressed a groan and stopped. Should’ve seen that one coming. “Hi, Rarity.”

The unicorn mare came up to the pair, before letting them continue at a slow walking pace. “Is something the matter, Rainbow Dash? You never got back to me about that modelling job.”

For the second time that day, Rainbow Dash slapped herself. “Sorry, I’ve had a lot on my mind the past couple of weeks.”

Rarity blinked, seemingly taken aback by the mere mention of Rainbow’s stress. “Oh? Anything I can help with?”

If you know a thing or two about relationships where one pony takes control over the other, I’m all ears. Oh, and it’s a lesbian relationship. With hypnosis. And a princess. And wings, lots and lots of wings. No rope, though. “It’s a long story.”

Applejack nudged Rarity. “Rainbow’s got some ambitious ponies on her patrol.”

Rarity looked up at the skies, checking for any patrollers. “Ah. Cloud Kicker and Raindrops, per chance?”

Rainbow Dash froze, prompting the other two mares to do the same. “How do you know about that?”

Rarity shrugged. “I may have picked up a rumour here and there. As I heard it, you recommended they… up their game, as it were?”

She really does know about that. Of course she does, Rainbow, this is Rarity you’re talking about. Rarity knows all the gossip in Ponyville, she probably knows everything that goes on in this town.

Uh oh. Rarity probably knows everything that goes on this town. Wait, what am I worried about? She wouldn’t know about me and Twilight. The only pony who really knows everything that happens around here is-

“Hi!” The sound cut through Rainbow’s train of thought like a knife through butter.

“Hey, Pinkie Pie.” Rainbow Dash could only barely stop her left eyelid from twitching.

“Look who I found waiting for her train.” Pinkie Pie bounced up and down excitedly, eliciting a nervous smile from the alicorn next to her.

Rarity smiled back. “Say, Twilight, you’ve been almost as absent as Rainbow has. Are you two doing anything together?”

Twilight didn’t flinch, or even blink. “Rainbow Dash has been helping me out with a few things, just some experiments regarding pegasus magic. Ready to go, Rainbow?”

Rainbow Dash patted her saddlebags with her wings. “Yup, all ready.” Smooth, Twilight, really smooth.

“So where are ya headed out to?” Applejack asked.

Twilight turned and led the way to the train station. It was in view, but with their friends tagging along it seemed like an abyss separated her from her goal. “Baltimare, to a book convention.”

Rarity nodded knowingly, then frowned. “Ah, so it’s an adventure for Daring Do novels, then. In Baltimare? Today? You are quite sure?”

Rainbow Dash had to fight the urge to roll her eyes. Daring Do did get me into this mess.

Twilight just nodded. “Yup, Baltimare book convention, today.”

A whistle sounded from the station. Pinkie Pie jumped up. “Oh! You’d better hurry, you wouldn’t want to miss it.”

Rainbow sighed internally. Finally. With a curt wave and a goodbye, the pair of mares was off to catch a train.

Applejack shook her head. “How much you wanna bet Rainbow’s got Scootaloo on her mind?”

Rarity snorted, albeit in a ladylike fashion. “Please, darling, that’s hardly a fair wager. Rainbow Dash is a public figure, after all, a lot of ponies look up to her, and with her being the way she is I can’t imagine she doesn’t worry about her number one fan.”

“Good point. Do you know anything about it?”

Rarity shrugged as the train departed, waiting for the whistle to die down. “All I know is what Sweetie Belle told me. Scootaloo is seeing a doctor today, nothing more. I suppose that’s all for the best, we’ll hear it when it’s certain.”

Pinkie Pie looked on at the train, pondering. Her left ear twitched, she dragged her right hoof over the ground, and a single lock of hair on her tail sprang up.

Applejack noticed the anomaly. “Pinkie sense?”

“Uh huh. I’m not sure what it means, though. Ear twitch, hoof drag and tail whip are kinda rare. It definitely has something to do with Twilight, though, I can tell that much,” Pinkie Pie said.

Applejack shrugged. “Well, what happened the last time you had that?”

Pinkie thought long and hard, but not about the answer to the question. “Um, that was with princess Cadence at her wedding. Well, the fake one, I think.”

Applejack frowned. “And you didn’t get that for any other weddin’, or any other time we had to fight something attackin’ us, or any other time Twilight went a little cuckoo in the clockwork?”

Pinkie Pie shook her head. “Nope, never.”

Rarity held a hoof to her chin. “Right, then, that narrows it down. Something is going to happen with Twilight that happened with the fake Cadence at the wedding, yet didn’t happen before. So it either means Twilight has found somepony to marry, Twilight is hypnotising somepony, or there’s a changeling invasion coming.”

Applejack pondered it for a moment. “I’ll go stock up on bug spray.”

Rainbow Dash shed her saddlebags and plopped her rump down on the seat. Twilight let the bags float slowly to an unoccupied seat and settled next to her. “You okay?”

Rainbow Dash closed her eyes and nuzzled Twilight’s neck. “I’m fine, just tired again. I’ve got a lot of things on my mind.” She looked up at her friend. “Oh, um, do you mind if I’m this close? If I am, you gotta let me know.”

Twilight put an arm around Rainbow Dash’s shoulder. “I don’t mind. And I’m sorry again, Rainbow, for what I did. I didn’t mean to upset you.”

Rainbow shrugged and shuffled closer to lean more on her friend. “That’s okay, Twilight, you know I don’t stay mad for long. Besides, this feels kinda nice now, don’t you think?”

Twilight smiled and felt the flush going into her cheeks. Looking around, she found the wagon was empty except for the two of them. With no witnesses, she stroked Rainbow’s arm. “Yes, it does. We can pull this off if we’re careful, right? We can be together and do… those kinds of things.”

Rainbow Dash smiled. “Those fun things. I did like those, you know, I don’t want that to stop. I just don’t want it to be just that.”

“I know, me neither.”

Silence fell between them.

Rainbow Dash reached up and looked Twilight in the eye. “And if you really do feel like you need to do that kind of thing, just tell me. No more keeping things bottled up ‘till you burst.”

Twilight kissed one of the hooves holding her face. “I won’t. I’m just a little confused right now. I promise I’ll open up, though, once I figure things out.”

Rainbow smiled and flared her wings, giving Twilight a slight tickle on her back. “Good, you just take your time. So what am I in for? Is it just gonna be books at this convention?”

“No, it’s going to be a big, giant hall filled with aisle upon aisle of erotic paraphernalia.”

Rainbow squinted. “That means sex toys, right?”

Twilight let off a soft grunt. “I knew it was a bad idea to put new vocabulary in your brain.”

The pegasus chuckled. “I’m sure I’ll be grateful for it when I’m a Wonderbolt and I have to start talking to Canterlot ponies.”

“Hmm, maybe. Like the one you’re talking to now.”

“I’ll try to squeeze in some big words for ya, then.” Rainbow Dash closed her eyes again let her head rest on Twilight’s shoulder.

Twilight sighed. “Hey, Rainbow Dash?”

“Yeah?”

“About the trancing thing, are you sure that’s still okay? And the purple magic, the sex magic?”

Rainbow gulped. “I liked it, Twilight, and I got scared. It’s risky, I know that, but it’s no different from doing dangerous tricks. I don’t wanna be scared of something I like and something that’s good for me. Besides, you liked doing it before I took the fun out of it for you, and even if I don’t really need it, you do, so why shouldn’t I agree?”

Twilight bit her lip. “So would it be okay if I put a little bit of a trance on you? Just to pass the time?”

The train stopped. Behind them, they could hear the doors opening and closing, and somepony blowing a whistle. Once the train was on the move again and no one had boarded their wagon, Rainbow Dash nodded. “Something light for now. Just so we can both get into it again.”

Twilight smiled and stroked Rainbow’s mane, letting the edge bleed out of her voice again. “Okay, pet, how about we start with that purple magic, see if that works okay? I’ll try to keep you talking, so you can stay more awake. ”

Rainbow Dash wriggled her wings to get comfy against the alicorn’s warm body. “Okay.”

Twilight closed her eyes and concentrated to find the right words. “First we need to get you nice and relaxed. So what I’d like you to do is picture yourself standing on the edge of a flight of stairs. The stairs are made nice, soft, fluffy clouds, and they go down deep into a blue horizon. Can you picture that for me, pet?”

Rainbow Dash closed her eyes just as Twilight opened hers. “Yes, Mistress.”

Twilight shuddered at being called that, and Rainbow clearly noticed, if the grin was anything to go by. Still, Twilight pressed on. “Breathe in the cool, fresh air, feel those soft, fluffy clouds under your hooves, and look down, down at the flight of stairs. Can you picture that for me, pet? Can you feel those clouds on your hooves?”

Rainbow smiled. “Hmm, feels good.”

“Good pet,” Twilight cooed. “Now you’re going to walk down those stairs, one step at a time. And every time you do, you’ll feel me giving your back a gentle stroke, just like this.” Rainbow Dash felt the hoof gently tracing along her spine, only really touching her in between her shoulder blades. “And every time I do, you’ll feel your body relaxing and your mind only concentrating on my touch. We’re going to count down from one hundred to one, and when we reach one, you’ll feel totally relaxed and safe. When you’ve done that, I’ll put some suggestions into your subconscious, whatever you choose to do with those is your call. Are you ready?”

Rainbow’s smile hadn’t faded, though there was a little tremor in her wings she couldn’t quite shake. “Yes, Mistress.”

“All right, pet. I’m going to start the count now. Count with me. One hundred.”

Rainbow took a step down the imaginary stairs and mouthed the number. She felt herself unwind ever so slightly, along with a gentle stroke down her back.

“Ninety-nine.”

Another step, another stroke.

“Ninety-eight.”

“Tickets, please.”

Bright. Why is it so bright? Hooves. Can’t move my hooves. Wet. Great, I’ve been drooling, haven’t I? I hope I didn’t snore.

“There you are, sir.”

“Oh, princess Twilight, I wasn’t aware you’d be with us today. Is everything all right with your friend there?”

Well, this is embarrassing. At least I’m not alone, though.

“She’s fine, sir, just taking a nap. Long hours on the Weather Patrol.”

“Aye, suppose that’ll do it.” The sound of a ticket puncher clicking, then the sound of hooves marching on. “Have a good day, Your Highness, hope your friend feels better soon.”

“I’m sure she’ll be up and running by the time we get to Baltimare.”

The sound of a door opening and closing, then the feeling of an arm wrapping around her.

“Rainbow Dash? Would you like to wake up now?”

Rainbow tried to talk, but the sound came out garbled. She nodded instead. Something softly pressed into her back, and the sensation made her aware of the increased sensitivity she was feeling all over. Twilight’s hoof ran slow circles over the area, sending muscle tension back into Rainbow’s body. Her breath picked up to a steady pace, her arms and legs stretched out in a reflex, and her wings gave a cursory flap. She yawned. “Wow. Talk about a power nap. So did you do the sex magic thingie?”

Twilight stroked along Rainbow’s left wing. The touch made Rainbow blush furiously, as well as send a quiver down into her loins. Rainbow didn’t even hear herself gasping, but evidently Twilight did. The alicorn recoiled at the sound. “Oh, sorry.”

Rainbow stretched out again and rubbed along that wing herself. “It’s okay. It feels pretty good, at least. Kinda like what they made me do in school, only deeper.”

Twilight raised her eyebrows just as the train came into the final station. “Oh. Well, what I did just now will leave your fur sensitive for about a whole day, if I’m right, the rest of it we’ll just have to wait and see. You shouldn’t have any problems if you’ve done this sort of thing before, though. Assuming you don’t mind doing it again?”

Rainbow Dash smiled and took off from her seat, fetching the saddlebags from under their seats. “I don’t mind, Twilight, it helps me focus. So where are we headed now?”

Twilight pointed to a monumental building in the distance as they exited the train. “The main convention center. We walk in through the big doors, get dressed, then walk into the right convention hall.”

Rainbow Dash kept flying rather than walking, if only to have something keep her mind clear and focused. “And when you say ‘get dressed’, you mean-”

“-I mean something fun, yes. Trust me, you’ll laugh when you see it.” Twilight smirked mischievously.

Baltimare’s convention center was famous in Equestria for several reasons. First and foremost, it was huge. Having been the hub of the Equestria Games in years past, the building itself was more than large enough to accommodate for the crowds that the Games drew. Secondly, it was famous for its practicality: all the former stadiums were connected through one great hall and converted to convention halls for gatherings of various stripe. There were conventions for hobbyist aquarium holders, for exotic weapons aficionados, and even for those funny comic book geeks who liked to dress up in silly outfits vaguely reminiscent of their heroes.

As Rainbow Dash strode into the main hall, she was reminded of the times she’d asked about the third reason this convention centre was so famous. The mare she’d asked, as any Baltimare mare would, had insisted this third point was a measure implemented for geeks in costume. The mare had been most insistent on the topic, even. It was only now Rainbow Dash realised that the insistence hadn’t been due to any sort of veracity in the claim, but rather that any other answer to the question “Why do you have such a complicated system of revolving doors?” would have brought embarrassment to the fair city.

Rainbow, still airborne to keep her head cool, regarded the contraption in front of her. It was wide, cylindrical, silver-ish in colour, and mostly featureless, save for buttons on the walls. It was flanked by a wall made of wire fencing, meaning every visitor would have to step through such a contraption at one point. Twilight pressed one of the buttons, and a door opened in front of them. A casual landing, Twilight walking in behind her, and another button pushed saw them inside what looked like a dressing room, complete with mirror, small stool and bright lights, as well as a very sterile feel to the place. The door closed, and Rainbow Dash felt the room itself moving, being shuffled around like a card in a deck.

Twilight smiled. “Now it’s time to get dressed. You ready?”

“Ready for wha-”

“Dive down deep, pet.” Twilight pressed a hoof against Rainbow’s forehead.

Even after what had happened last time, Rainbow Dash couldn’t stop herself from relaxing. Her jaw went slack, her eyes fluttered, her body felt light and weak all over. “W-what’re we doing?”

“Nothing you won’t enjoy, I promise. I’m going to use a spell to warp my voice so nopony’ll know it’s me, but I promised I wouldn’t cast any spells on you, nothing that would show up on a test. So I’m just going to have to hypnotise you so you can’t talk.” Twilight leaned in and ran her tongue over Rainbow’s lips. The warm wetness made Rainbow’s wings stand erect, as well as make her tail twitch.

Twilight slowly withdrew, clearly trying not to look flustered. “Feel your Mistress’s fluids on your lips, pet. Feel it sealing those lips together, carefully, painlessly. No need to talk now, no need to be afraid. Just relax. Let your throat relax for me as well, just letting go of your voice for a little while. Can you let that happen for me, pet?”

Rainbow Dash mumbled something through her lips, but she couldn’t get them to budge. They were stuck fast, glued together by mere suggestion. She nodded as she felt a numbness creep into her throat, completing her muting.

Twilight’s smile turned to a smirk. “Good, pet. Drift back up out of trance at your own pace. Now, time for your disguise. I hope you like latex, or rubber. It’s a collective name anyway, I didn’t catch the details.”

Rainbow Dash’s eyes went wide when she saw Twilight conjure up a black ball of shiny rubber. Her mind wandered to that one fateful daydream in the library. She can really do that?

She can conjure rubber? Seriously?

Twilight took the response as a positive and gently lowered the ball onto Rainbow Dash’s back. Cold at first, the slick material quickly warmed up and coated the small of Rainbow’s back. Thick blobs reached out from the main mass to wrap around the base of her wings. She turned her head around to look, then shot Twilight a questioning look.

Twilight pointed to the blobs moving. “Oh, you’ll want to keep your wings up and stretched out, it’ll hold them comfortably. You will be able to fly, still, but I wouldn’t if I were you.”

Rainbow nodded and kept her wings still. Before she even realised it, the rubber had coated her wings from base to tip. They felt oddly comfortable, isolated but not cut off from the world entirely. Her torso was being coated in the same smooth, black matter, and she giggled inside as it tickled around her belly.

Once again, Twilight noticed. “Good Heavens, you are really enjoying this, aren’t you?”

With her lips sealed, all Rainbow could do was nod.

Then she realised she could still moan against the mental restraints when Twilight made the rubber squeeze her muscular rump. Before long, her hind legs were half coated and the sight of her rainbow tail was replaced by that of a heavier black mass of rubber, with rings along its length to make it look like a raccoon’s, or at the very least a settler pony’s.

Twilight came closer to look Rainbow Dash in the eye. “Rainbow, do you want me to numb your hooves for this next part?”

Rainbow Dash smiled and shook her head. She closed her eyes, then lifted her hooves off the ground as one by one, they were encased in the safety of black rubber. Good thing she gave me that cream. Good thing I listened to her advice, too. She looked down at her new, shiny self, and found the mass was making its way up to her head.

Twilight backed away slightly. “You’ll be able to breathe normally, don’t worry. And your eyes and ears will stay covered, but they won’t be blocked.”

A nod and a deep breath later, Rainbow Dash was fully encased in the rubber suit. She could see clearly through some lenses conjured into the design, and the stuff around her ears didn’t feel too uncomfortable, either, even keeping them warmer and more comfortable than usual. She moved her hind legs slightly and moaned into the costume upon realising every move created a squeaking sound. Then again, the fact that the costume hugged her private regions very tightly and even seemed to vibrate ever so slightly whenever she moved may have contributed to that as well.

With a flourish, Twilight conjured her own costume. Rather than splashing herself with it, she let out great ribbons of rubber to wrap around her limbs, belly, head, wings, everything, even her horn.

Rainbow Dash then realised the fatal flaw in Twilight’s plan: Twilight now looked like a rubber alicorn. She had big green eye lenses that made her look like an alien of some sorts -- and Rainbow Dash could only assume her own lenses were identical, hiding her eye colour -- along with a deep, dark purple colour scheme with blue and reddish areas along where a princess’ chest piece and shoes would be.

Rainbow Dash’s ears perked when she heard her own costume hiss. Rivulets of red crept up the rubber on her hooves, marking some sort of tribal pattern on the surface. Twilight took her saddlebags back, and gave Rainbow hers. Twilight then made a circling gesture over her throat, warping her voice to sound lighter, slightly higher-pitched. “Now no one will know it’s us. Oh, and if you really need to speak, then just tap me to get my attention and tap your throat. It’s just a precaution in case something gets you too excited, so no one recognises your voice and all.”

Yeah, of course. And we’re covered in rubber so nopony can see our furs or our cutie marks. But what about your wings, Twilight? Can’t you hide your wings? Or at least hide your horn? Rainbow pointed to said horn even as Twilight pushed the button to send the booth to the exit point.

Twilight smirked in her costume, noting Rainbow hadn’t checked the mirror yet. The purple rubber alicorn just shrugged, keeping those coated wings in their upright position. “Don’t worry about me, pet, I’ll be fine. Oh, and if we lose each other, I’ll call you Pallette, just so we don’t end up revealing ourselves. Think that’ll work?”

Rainbow nodded as the door opened, though the horn and wings situation still bothered her. Two ponies in uniform stopped them, turned off the light in the booth, shone a blue light into it, then let them pass without further fanfare. Rainbow Dash followed her Mistress, albeit apprehensively. Looking back, she saw another shuffling contraption that was letting visitors without rubber outfits filter through and attend some convention or other. With the way the wire fence was set up, along with the security, presumably there was no way of getting in without entering and exiting a shuffling contraption. A good way to get a security check, she felt, if a little convoluted.

Oh, Twilight, this is never gonna work. Sure, you’re covered, but you’re the only alicorn here -- I hope, it’d be kinda weird to run into Cadence -- and being covered in rubber is still gonna leave a pretty big hint about who’s under there, you know!

Rainbow’s train of thought stopped when they reached the counter for their hall. Twilight paid their admission, then said she was “Mistress Purple Prose, with guest,” or something along those lines. Rainbow Dash’s mind returned to reeling over the implications.

Then she saw the convention hall.

“Welcome to the Coursers and Corsets Erotica Con,” it said on one of the overhead banners. That didn’t take long to process.

Aisle upon aisle of sex toys lay before her, all kinds of things for use among consenting adults with a good lock on their door, and even a stand selling locks for those who needed one. This sight also wasn’t too mind-boggling.

She reached up to touch her forehead and found a very solid protuberance poking out of it. Twilight had added a horn to the costume, apparently, making Rainbow look like a red and black alicorn. This was, yet again, not a difficult thing for the mind of Rainbow Dash to process, as she was fond of pranks and this was turning out to be Twilight’s best prank ever. Truly, Rainbow Dash had never thought Twilight had this kind of scheme in her.

There was, however, one sight that refused to fully process at first. That sight was not the banner, nor the aisles, but the crowds amidst the aisles.

Finally, after what seemed like an eternity, Rainbow Dash realised that what she was seeing was real.

Rubber alicorns.

Rubber alicorns everywhere.

Author's Notes:

Ladies and gentlemen, you've gotten a little bit of clop, lots of character, some worldbuilding and some jokes in between. Now, though, comes some pure fun. Sex jokes, (un)fortunate implications, and even some food for thought, but even that will be referring to the kinky side of things.

I've been sneaking in adult jokes in my fanfics since pretty much the beginning of my career. I don't put them where they don't belong (how's that for a double entendre?), only really using them for SoL fics to make them more broad in their appeal and less kiddy. Since this is already a mature story, the question isn't so much where to go with those ideas, as much as it is "What can I get away with?"

Also, at the time of writing, I've done some Google searches. I custom searched "rubber alicorn" and came up empty. The phrase "rubber alicorn" is not present anywhere on this site, according to Google.

So my story is the first instance of rubber alicorns, or even rubber-clad alicorns, on this website.

I like to think that's something to be proud of, right there.