Dashie's Doll

by Snow Quill

Rating: mature
Tags: My Little Pony: Friendship is Magic, Rainbow Dash, Romance, Porn, Fetish, Rarity, Sex
Length: 3800

After Rainbow Dash had a rough day with the Wonderbolts, Rarity closes up shop, dons her collar, and prepares for a special kind of stress release.

Rainbow Dash and Rarity have been practicing hypnosis in preparation for some kinky fun, but haven’t had time to actually do it. Between work and saving Equestria, they are feeling pent up with no way to vent their desires and energy. 

Finally, after Rainbow has had a stressful day working with the Wonderbolts, Rarity decides to cash in on their ‘rainy day’ activity, surrendering herself to her mistress and her pocket watch. 

Content tags - fxf, mistress/slave play, BDSM themes, consensual hypnosis, anal, rough sex, oral, mud, orgasm denial, temporary mind break, and fluffy aftercare.

A/N - This story was requested by superfun. Thanks for the awesome idea and to all my proofreaders who helped make it awesome!
Cover art drawn by myself.

Published 2019-10-03 03:10:01 UTC
Last updated 2019-10-03 03:10:01 UTC

Getting Down and Dirty

The hum of a sewing machine mixed with classical music filled the inspiration room, the seamstress humming along as she worked. This dress was the latest order from an important Canterlot client and she hoped to have it finished before her marefriend got home.

The slamming of the front door shocked Rarity out of her focus, her magic quickly turning her music off and safely storing the dress away as she rushed across the room and down the stairs.

“-damn newbies, I can’t believe it! Why the buck did they think pushing someone off a cloud would be a funny prank?! I swear, if Spitfire hadn’t been there...”

Rarity rushed to her marefriend’s side, eyes wide in worry as she looked Rainbow Dash over for any injuries. “Dashie darling are you all right?”

Rainbow paused in her muttering and took a deep breath, shaking slightly as she forced it out slowly. She opened her eyes and quirked a smile at Rarity before nuzzling her. “I’m...fine. Just some stupid recruits at training today. That’s all.”

Rarity furrowed her eyebrows, “Really, are they so eager as to repeat Tornado Lightning Dust?”

Rainbow sighed and leaned into her unicorn, deflating a bit. “Let's just forget about it. I’m tired, sore and angry. That’s not how I wanna be with you Rares.”

Rarity softened her gaze and smiled, gently wrapping Rainbow in her magic, floating her onto her back as she went upstairs. “Well, we simply can’t have that now can we? I think it’s time for that...Rainy day activity we have saved.”

Rainbow blushed a bit before recovering her cool and grinning as she leaned into Rarity’s ear and nipped it. “Oh really~?”

After a rather unladylike squeal and near stumble, Rarity recovered and gently flung her chuckling marefriend through the door and onto their bed. She walked into the room and turned to the pegasus with a pout and deep blush, about to retort when the words died on her tongue.

Rainbow had rolled onto her back, thrusting her hips upwards and swaying them in a lewd display. She still wore her wonderbolts suit, the tight fabric leaving nothing to the imagination. Her small teats pressed against her uniform, her nipples perfectly outlined as the mounds swayed side to side.

Rainbow smirked as Rarity licked her lips. “My my, someone is horny today, hmm?”

Rainbow flipped off the bed and landed in a perfect split, a completely unnecessary (yet sexy) display of her flexibility and athleticism. With her back to Rarity, she began to slide off her suit, making sure to be as slow and sensual as possible.

She heard Rarity squirm behind her, attempting to hide her lusty moans and whimpers. Before too long she was free of the fabric, standing up and cocking her head at Rarity. “What are you standing there for? Go get ready slut, Miss Dash is getting impatient.”

Rarity couldn’t hide the loud moan that rumbled through her body, quickly scrambling to her dresser and pulling out her playtime attire. A simple black collar, a nullifying horn ring, and a bag filled with goodies.

The unicorn shook slightly as she dropped the collar twice, an inferno lit within her after that display and the commands of her mistress. It had been a bit too long since their last playtime, Rain- Miss Dash being too busy with work. Rarity had a feeling she wouldn’t be sitting right for a couple days.

She couldn’t wait.

Finally her collar clicked into place, her shaky hooves now bringing the horn ring to her forehead. A warm and sweaty body pressed into her from behind, Rarity gasping as she was pushed down until the unicorn was kneeling, Rainbow pressing onto her and keeping her trapped. “Such a naughty slut, keeping me waiting. I’ll make you pay for that later.”

Rarity whimpered at the threat and subsequent bite on her ear, a hoof pressing on the back of her head keeping her down in her place. A shudder ran down Rarity’s spine as Rainbow picked up the ring, the unicorn holding her breath as she awaited the familiar tingle of dampened magic.

It never came though, instead Rainbow kissed her forehead, her tone softening. "Now, what is the safeword?"

"Rhinestone."

"Good girl."

Rainbow stretched her wing out in front of Rarity’s face, a pocket watch dangling down from the feathers.

“Now then, just like we practiced…”

Rarity nodded, taking a deep breath and relaxing as she watched the watch sway back and forth.

“Good girl, just like that. Keep your eyes on the watch and take even, slow breaths. With each exhale you’ll find yourself relaxing, your eyelids may fall a bit but you will keep your gaze on the watch. You are in a safe space, I will take care of you.”

Rarity didn’t respond, her lidded gaze set straight forward, her eyes still following the sway of the watch. Rarity took no notice of Rainbow’s proud smile, her mind slowly emptying of anything unimportant. She was in a safe space. Rainbow would take care of her.

Worlds away, Rainbow sighed happily; it had taken months of practice to get to this point, and now they were going to go all the way.

“When I tell you to wake up, you will find yourself hornier than you have ever been before. You will become my slutty little doll, following my - and only my - every command without question. Every time you do, a surge of pleasure like you’ve never felt before will rush through you. You will not cum until I give you permission though.”

That was the easy part, now for the insurance, “Now, if I give you any command that will harm you or myself you will snap out of the trance. If I ask you to do something you would never do under normal circumstances you will snap out of it. If I say ‘rhinestone’ at any point you will snap out of the trance.”

Rainbow waited a moment for the words to sink in before slowly stopping the swaying watch. “Rarity, wake up.”

The unicorn blinked the haziness away, a soft moan escaping her lips as she shifted around under Rainbow. A heat unlike any she’d ever known crept up her body, her controlled breathing giving way to needy pants and whimpers.

“Rarity, tap your front right hoof three times.”

Rarity did so without hesitation, gasping after as a wave of pleasure swept over her. Rainbow grinned and kissed Rarity’s forehead before shifting off of her. “Stand up.”

Rarity did so, if a bit shakily. In the short time she was kneeling a sizeable puddle had formed underneath her, something that amused Rainbow Dash. Today was going to be fun.

Rainbow stuck out her front hoof, “Come and kiss my hoof slave.”

Rarity turned around, a slightly dazed look in her eyes as she stepped forward, kneeling and kissing the hoof. She shuddered and closed her eyes, awaiting the next command.

Rainbow pulled her hoof away and nodded, satisfied with the test. “All right Rares, sit down and stay here.”

Rarity sat down, biting her lip and squirming as she shuddered again. Rainbow grabbed the bag and slipped it on before heading downstairs and closing up the shop.

After double checking everything she trotted back upstairs. “Okay Rarity, when I say ‘go’, you are going to teleport yourself to the southern edge of Sweet Apple Acres. It’s where we had that picnic with AJ last week. When you are there, just sit and wait for me. And...go.”

Rarity’s horn lit up, a bright flash erupting from her. Rainbow cringed and used her hoof to shield her eyes. One quiet ‘pop!’ later and Rarity was gone.

Rainbow flew out the window, making sure to close it behind her before zooming off towards Sweet Apple Acres.

When she came to the southern edge, she found Rarity sitting against a tree, slowly blinking. Rainbow bit her lip as she landed and checked over her marefriend, concluding that she was alright, if a bit more dazed than she would normally be under hypnosis.

“Alright Rarity, get on my back.”

Rarity did so, a quiet gasp escaping her as she obeyed the command. Rainbow grinned as she flared her wings and took to the skies, flying them a short ways into the Everfree forest. They shortly came upon a clearing, perfect for what Rainbow had in mind for her little hypnotized doll.

“Off my back, sit on the ground. ”

Rainbow waited for Rarity to do so before pawing at the ground, testing the dirt. Satisfied, she took to the air once more, this time coming back with a couple dark clouds. Rarity did not react when the clouds were kicked, sending a torrent of rain streaming over her.

The water puddled around her hooves, splattering mud against her pristine white coat. Rainbow grinned, landing in a puddle and splashing more muddy water around. “Aww yeah! Now this is more like it!”

She made her way to Rarity and cupped her cheek, “Ahh my prissy little slave, now we get to have some real fun. Tell mistress how you are feeling.”

Rarity squirmed in the cold mud, a deep blush warming her cheeks as she stared into Miss Dash’s eyes. “I, I feel so very horny Miss Dash!”

Rainbow chuckled and nipped her ear, “And what do you want mistress to do to you?”

Rarity moaned, “Ahh...W-whatever mistress wants. Use me, my body, my holes, I live only for your pleasure Miss Dash. I am your doll to play with, and only you can decide what to do with me.”

“Well spoken pet, but not quite what I was looking for. You are not your prissy self, right now you are my horny little slut and will talk like one.”

Rainbow pushed Rarity onto her back in the mud, the unicorn squirming more. “Nnnn, please Miss Dash! Fuck me, make me scream, I want you, I need you!”

Rainbow growled dominantly and lunged forward, capturing Rarity’s lips with her own. Rarity was powerless to Rainbow’s dominance; even more so under the hypnosis.

Tongues met as Rarity surrendered to her mistress, letting her guide the kiss. Through the kiss, Rainbow’s hooves roamed over her doll’s body, spreading the mud around further.

With a grunt and a flap of her wings, Rainbow rolled to the side, pulling Rarity up and onto her chest. With a lewd slurp, Rainbow pulled away from the kiss, panting softly.

Rarity submissively laid her head on Rainbow’s chest, awaiting her next command. Rainbow squeezed Rarity’s flanks, groping the cutie marks and enjoying the squeaks and moans as a result. While her hooves were busy, Rainbow used her wings to open her saddlebags and dig around for a particular item. Finally, she found what she was looking for and grinned down at Rarity, her wing coming up and showing her the buttplug.

“You know what to do, don’t you slut.”

Rarity licked her lips before craning her neck to lick at the plug, lathering it in her spit. After a minute she opened her mouth and wrapped her lips around it, twisting her head to make sure she lubricated the entire thing.

Rainbow pulled it away, pecking Rarity’s lips. “Good girl, now turn around.”

Rarity beamed at the praise and quickly turned around, shaking slightly as she stared down at her mistress’s puffy marehood. Her tail was flipped over her back as she winked shamelessly, dripping her juices onto Rainbow’s chest.

Rainbow chuckled beneath her, pulling her flanks down to rest on her chest. “Alright Rares, time for a game. You know this plug is going in you, but I’m a nice mistress and so I’ll ‘prepare’ your hole. I’m gonna need some pleasure in return though, so however you eat me out will be how I use my tongue.”

Rainbow had barely finished explaining the ‘rules’ before Rarity had lowered her head to begin her worship. Rainbow couldn’t help but let out a moan at her pets eagerness, but keeping to her word she followed the pattern of the tongue in her snatch and applied it to the ponut in front of her.

Rarity moaned and shuddered as her plot was prodded but she didn’t dare lose herself in the physical pleasure, pleasing mistress was much more important. Steeled in her purpose, Rarity lit her horn, her magic dancing across her mistress's teats, gently pulling and groping the jiggly flesh - momentarily forgetting about the ‘game’ they were playing.

Rainbow was by no means an easy mare, but the build up and exploitation of her sensitive breasts pushed her over the edge sooner than she expected. The blue mare yelled as she thrust her hips upwards, her juices splattering all over Rarity’s face and her own lap.

Rarity collapsed onto her, moaning and squirming as she was just on the edge of release, but unable to achieve it due to mistress not giving her permission yet.

Rainbow panted heavily, planting a kiss over Rarity’s marehood before placing the tip of the plug against her twitching hole. Rarity moaned softly, biting her lip as Rainbow worked the plug into her. Thanks to the earlier stimulation it slid it rather easily and without too much discomfort on Rarity’s part.

Once the plug was settled, Rainbow pushed the button embedded into the handle, making it vibrate. She grinned as Rarity shrieked, gently tossing her off of her and standing up. Rainbow shook herself, flinging mud and marejuice everywhere.

Rarity was moaning and squirming on the ground, lewd slurping and squishing sounds coming from her flailing in the mud. Rainbow’s grin curled into a smirk as she slid the saddlebags off of her back, digging through them for another toy.

Her search was rewarded with a large strap on, shaped like a stallion’s proud member. Rarity cooed with desire as she saw what Rainbow put on, opening her legs wide and fluttering her lashes in invitation.

Rainbow slowly stepped forward but stopped just before the wanton mare, holding up a hoof and rolling it. “On your hooves, ass up, face down.”

Rarity quickly obeyed, her jiggly flanks quivering with her increasing desire. Rainbow didn’t leave her wanting for long, pouncing on her quickly. Rarity moaned under the impact, spreading her legs further apart to welcome the stiff toy.

Rainbow ground the flare of the cock against Rarity’s winking slit, a possessive growl rumbling in her throat as she bit Rarity’s ear. “Tell me what you want.”

“Mmm, ohhh, I, I want to be fucked! Oh please mistress, fuck this dirty whore into the mud with your mighty cock, make it hard to walk! I want you to use me, use your slutty doll and- Aaaahh~!”

Rarity squealed as Rainbow thrusted forward, burying half the length into the mare. She melted as Rainbow got to fucking her, thrusting with reckless abandon into the quivering mare, pushing her deeper into the mud and adding to the symphony of squelches.

Rainbow released her ear and snorted, her hot breaths blowing over Rarity’s neck.

“Nnnng...M-mistress! Ahh, please, p-please may I cum?”

Rainbow savagely bit the back of her neck and hilted inside her one more time, breathing hard and shaking as she slowly and purposefully withdrew completely. Rarity let out a keening cry, almost to tears as she was still denied wonderful release.

Rainbow stopped the plug from vibrating, and after what felt like an eternity to Rarity, Rainbow pulled the plug out, only to replace it with the strap on.

Rarity moaned throatily as her ass was filled, cooing at the gentle and almost loving thrusts; a sharp comparison to the abuse her marehood was just put through. As Rainbow’s hips met hers, Rarity shivered. Her mistress leaned over her and nuzzled her cheek. “I hope you don’t have any plans this week...You aren’t gonna be walking right for a while~”

The threat sent more shivers down Rarity’s spine, but she wasn’t afraid. She rather looked forward to her mistress making good on her word. She wordlessly nodded her head, shifting her aching legs apart just a bit more.

Rainbow took that as an invitation, rocking her hips back in short and quick jerks. When the medial ring threatened to pop out she stopped, taking a deep breath and adjusting her stance before thrusting forward with all her might. Rarity’s cry caught in her throat but her spasming legs spoke of the sensations bombarding her mind and body. Rainbow worked up to the same hammering rhythm she used with her pets other hole, panting and grunting like an animal.

Soon, Rarity’s legs collapsed, unable to support her any longer. Rainbow Dash hooked her hooves around Rarity’s hips, pulling her up and pulling out of her until only the tip remained inside. With an even deeper growl than before, Rainbow uttered one command into Rarity’s twitching ear. “Cum.”

Rarity screamed her torrential release to the heavens as Rainbow hilted inside her one final time, both mares spasming and flailing about in their orgasms.

As Rainbow convulsed above her, Rarity’s mind had gone blank, every bit of her conscious brain frazzled as waves of intense pleasure swept over her. If she were capable of conscious thought, she would have considered it the best orgasm of her life. In her current state however, all she could utter were incoherent mumbles and quiet moans.

Rainbow took a minute to recover, shakily pulling the strap on completely out of her marefriend and taking it off. After making sure it and the plug were wrapped and put back in the saddlebags for sanitization later, she nudged the panting unicorn.

Rainbow chuckled softly as she received a soft gasp, leaning into Rarity’s ear and whispering their safeword. “Rhinestone.”

Rarity groaned loudly, blinking as she tried to focus on where she was. “Wha...Ra...mmm...I, I…”

“Shh, don’t worry about talking right now, I just wanted to make sure you were out of the trance before we went to the spa.”

Rainbow gently picked up Rarity, grunting in effort as she lifted her marefriend onto her back, grabbed the saddlebags, and took off to the Ponyville Spa. Rarity was quite surprised when, once lifted from the drying mud, she saw that it was near sunset.

“H-how, ugh…”

“Shh. I got ya Rares, don’t worry.”

Deciding that thinking was too much at the moment, Rarity held on as tight as she could, her stomach lurching as Rainbow took to the air and flew back to town.

The sun had just set when the pegasus landed by the back entrance to the spa, a coded knock opening the door. Aloe and Lotus chuckled upon seeing Rarity’s state, sharing knowing looks and tittering as they led her to a private room.

“If you need anything…”

“...Just ring the bell and we shall come.”

Rainbow rolled her eyes with a smirk as they walked out, flicking their tails up and revealing themselves for a moment. Flinging the saddlebags to a corner, she started towards the tub in the center of the room.

It was set into the floor with steps leading in and a ledge running around the tub, various buttons on the floor that could start the water, drain the water, and even turn on the jets. Rainbow carefully walked down the steps before maneuvering Rarity off her back so she was sitting on the ledge. She turned on the water and fiddled with an arcane menu, which allowed various scents and soaps to be mixed in with the water as it filled the tub.

She decided on a vanilla scented bath bomb, which would dissolve the mud and dirt into the foam but leave the water clean. Both Rainbow and Rarity sighed in relief as warm water began filling the tub, just on the edge of being too hot.

There was a quiet hissing sound as a tile was slid out of place, a bath bomb being pushed out and into the water. The light and calming scent of vanilla spread as the foam dissolved, the steam from the water spreading the scent across the room.

Rainbow scooted over to Rarity and wrapped a wing around her, using her other wing as a cup to bring water up and over the dirty unicorn. The bath bomb really did its work, the water turning dark from the mud and dirt for only a moment.

As Rainbow rinsed her marefriend off, Rarity began to hum. Her mind was slowly coming back from that earth shattering orgasm, finding no surprise in how sore she felt. It was the best kind of sore though, an almost comforting element to the aching sensations because she knew who was responsible for it.

“Mmm...R-Rainbow?”

Rarity’s voice was hoarse, her throat dry from her screaming and shouting.

“Yes, Rares?”

“I love you.”

“I love you too.”

A comfortable quiet settled over them, the pair snuggling in the water as Rainbow continued to rinse them. When the water began to cool they reluctantly stirred, Rainbow bracing Rarity as they carefully made their way out of the tub.

Leaving Rarity sitting on a plush bath mat, Rainbow stepped away to a heating rack, which had warm, fluffy towels waiting. She grabbed two large ones for their bodies and four smaller ones for their manes and tails.

As Rainbow wrapped the larger ones around Rarity and herself, her marefriend’s horn lit and wrapped their hair in the smaller ones.

Rainbow grinned and pecked Rarity’s cheek before trotting over to a cabinet, pouring out a glass of sparkling water for Rarity and orange juice for herself.

Returning with the glasses, Rarity took hers in her magic and sipped at it, sighing happily as it soothe her parched throat. All warm and wrapped up they continued their snuggling, leaning against each other and sipping at their drinks.

“So uh, did you enjoy yourself?”

Rainbow Dash was usually an overly confident mare, but when it came to doing freaky things to Rarity she was always a little nervous. Worried about how much the unicorn enjoyed herself, if she wished Rainbow had done anything different. She had yet to disappoint Rarity, but that little nugget of doubt always stuck around like a popcorn kernel in your back tooth.

“Mmm, oh quite. It was absolutely marvelous Dashie dear. You certainly made good on that promise, I don’t think my flank has ever been quite this sore before.”

Rainbow chuckled and nuzzled her, flashing her signature ‘devil may care’ grin. “Awesome! I hope we get to do it again soon~”

It was Rarity’s turn to grin, though it was more a sly and demure quirk of her lips; she was a lady after all. “Oh I simply can’t wait.”