Monster Mares

"Many explorers underestimate the slime's ability as a creature and tend to fall to their large determination. Even though they can be absent-minded much of the time, once a slime sees a victim they want, they never avert their gaze." - The Equestrian Explorer's Encyclopedia of the Equine-Monstrum

It was all too confusing, Rarity was thinking as she entered her shop and flipped the sign from 'closed' to 'open'. Fluttershy was living with a "maredragora", a plant that was also a pony - or was it a pony that was also a plant? Rarity blushed again as she recalled Fluttershy's announcement. It had become very strained and awkward when, after much hemming and hawing, her five friends understood the extent of the pegasus's relationship with the maredragora. "But, if that's what Fluttershy wishes," Rarity said aloud as she levitated her hat and sunglasses to their appropriate place, "then of course I will support her in it."

Privately, Rarity thought that a tree made the best possible companion for the poor girl. Neither was very good with words.

"Sweetie Belle!" Rarity called out. Carousel Boutique was quiet, which meant that her sister was most likely not in. "Sweetie Belle!" Rarity yelled again anyway. She spotted a note on the table next to her sewing machine.

"Hi Rarity! I went swimming with Apple Bloom and Scootaloo. I'll be back for dinner. I love you! - Sweetie Belle." The 'i's were all dotted with little pink hearts.

Smiling, Rarity set the note back down and trotted into the kitchen. To be honest, Rarity thought, a swim sounds divine right now, if only I could do it without mussing up my hair too badly. Maybe Twilight knows a spell... She pulled a pitcher from the refrigerator and, bringing down a cup from the cabinet, poured a tall glass of orange juice. She seated herself at the kitchen table and drank most of it in a few quick gulps.

"Delicious!" she said, dabbing at her mouth daintily with a napkin. The chilled drink was just what she needed this hot summer afternoon. Why, she could feel the sweat pouring off her back during the walk back from Fluttershy's cottage, and that wasn't even fifteen minutes away. That was the worst part of summer, to feel drops of sweat slipping between your flanks and be unable to do anything about it. It was most indecent to wipe oneself in public, much less anywhere near the rear.

Condensate was forming on the sides of the glass, a testament to the sticky heat Rarity was enduring. She placed the glass in the sink and wiped the table dry before the water could ruin the finish. Walking back into the studio, she sat down at her easel. Bon-Bon had commissioned an elegant dress for an upcoming wedding, and Rarity had been in the middle of sketching out a few ideas when Twilight called her away to Fluttershy's cottage. There were a few lines here and there - Rarity was thinking something round to match the earth pony's hair - but nothing substantial.

The sun beat down on her through the wide window. Distracted, Rarity looked out at the sky. Not a cloud in sight, so no hope for any respite from the heat. She tugged the curtains closed, but that only made the room stuffy, the heat more oppressive. Trying to ignore the temperature, Rarity took a piece of charcoal and drew a handful of bold lines. A bead of sweat fell from her forehead and landed on the page.

"Argh!" Rarity grunted, throwing up her hooves. It was no use, she couldn't concentrate in this heat. She stood up from the easel and paced the room. If only there were some way to cool off quickly so she could get back to work. Her eyes fell again on Sweetie Belle's note.

"I~de~a!" she shouted cheerfully. With a thought, she turned the sign on the door from 'open' back to 'closed' and drew the shades over it. Grinning widely, she turned and dashed up the stairs, as quickly as her lady-like demeanor would allow.

***

With the bathroom door shut, Rarity turned on the faucets full blast. Water spilled out into the porcelain tub, the sound positively delicious to Rarity's ears. She flipped a switch, and with a small grinding noise, the water was diverted from the spigot to the showerhead. Cool liquid spilled over Rarity's forelegs, and the mare shivered at the prospect of a relaxing shower.

While she waited for the water to warm up, Rarity removed her makeup with a delicate wipe, then collected soap, shampoo, conditioner, and a loofah and placed them on a stand next to the tub. With a flick of magic, a radio by the sink came to life and the soothing voice of Moonbeam Nights filled the room. A squirt in the bath of something purple from a bottle from the Spa, and she could smell lavender.

Rarity was quite happy with her bathroom. It wasn't as grandiose as the baths at the Spa, of course, but the tile walls and the soft rug under her hooves, the sparkling full mirrors and griffon-made faucets, it all built to a beautiful aesthetic. She loved to relax in the bath after a long day of dress-making. Fill it up with water, add a few rose petals, a scented candle or two, and she would settle in for an hour with her latest romance novel.

But for now, a quick shower would suffice. The water was quite hot - hot water cleans better, and makes hot air outside seem cooler when one is finished - so Rarity pulled back the shower curtain and stepped inside. She gasped as the water struck her mane and back, the heat of it sinking down underneath her coat and massaging her skin. She spun slowly in place, letting the water soak every part of her, rinsing away the dirt and dust of everyday life. Save the spa for another day, she told herself. This is heaven to me right now.

Her mind began to wander, as it often did, as she lathered up the loofah with her fruit-scented body wash. Fluttershy and a tree-pony-thing, she thought as she rubbed the soap over her legs. How did that happen? Steam was rising around her, the shower curtain billowed gently, and Moonbeam's silky sensuous voice was floating in to her. Seriously, though. It eats her... ahem... feminine juices. How does such a monster even exist?

Twilight had shown them all a book, The Explorer's Encyclopedia of Something something-or-other, that had pages and pages of all sorts of monsters, monsters that none of them had ever heard of before, monsters that - Rarity shivered a little - all made love to their victims. What kind of animal does that? Rarity thought as she drew the loofah over her cutie mark. Just finds a random pony and forces them to perform such crude acts... Soap suds dripped down the blue trio of diamonds and fell into the water, purple pools of bubbles. She turned around, allowing the spray of the shower to rinse her flanks clean.

She was starting to feel warm. Her face was flushed, and it wasn't just the heat of the shower. Rarity wondered how Fluttershy and her marefriend - Petal, was it? - did it. Did they kiss first? What did a maredragora taste like? What did Fluttershy taste like, for that matter? Did the maredragora kiss Fluttershy on the neck? Or the wings? On her round flank with the cute butterflies? Rarity stroked her neck as water continued to cascade over her back. Did the maredragora push Fluttershy's head down, leaving her gorgeous derriere up high, ripe for her to lean in and lick those dainty petals?

Her hoof snaked between her rear legs and found a soaked marehood awaiting it. It wasn't all from the shower either. Rarity pressed hard, eager to feel that delightful pressure. A soft stroke, then another as fire spread from the center of her loins to her thighs and barrel, and another until she was rubbing herself furiously. "What were the chaaaances?" Moonbeam sang, nearly drowned out by Rarity's panting and the steady drizzle of water on the tub and on her. "Something in your eyes was so... inviting!"

So entranced was she by her fantasy that it took several moments to realize that the shower had stopped. Confused (and not a little frustrated), Rarity fiddled with the faucet's handles. But even turned all the way on, nothing came out. Frowning now, she tried adjusting the showerhead with her magic, twisting it one way and another. A drop of bright blue water fell out and landed with a splash on the bottom of the tub.

"Oh, come on," Rarity muttered through clenched teeth. It had been quite some time since her last 'session', as it were, and she wanted to return to it without further delay. She went back to fiddling with the faucet. Another drop, larger this time, came out. "Almost got it..." With a sound like pudding being poured out of a cup, a torrent of blue fluid gushed out of the showerhead, hitting the floor with a muddy fwomp and splashing goo all over the inside of the shower. Rarity let out a loud "Ewwwww!" as many droplets landed on her. "What in Celestia's name is-!"

But something stopped her from finishing the sentence. The goop began to flow downwards, trickling down the shower curtain and off of Rarity, collecting in a big lump. And then the lump began to rise. Horrified, Rarity watched as the slimy substance began to take a shape, a limb bulging out here, thickening and solidifying into a leg, then another, and a large growth in between that twisted and flattened until it looked uncannily like a pony's head, complete with ears, eyes, and mouth. The eye looked at her, then blinked, and Rarity could see through them the pipe leading up to the showerhead, and the pattern on the curtain. The pony's "hair" was done up in familiar curls, and something about the shape of the eyes gave her an uncanny sense of deja vu. And then she realized. Standing opposite her in her own private shower was a transparent, aqua-blue pile of slime that looked exactly like her.

Rarity shrieked and tried to jump out of the bath. A streamer of goo shot out from the base of the monster and wrapped around her leg, hauling her back down into the tub. The wet feeling of warm goo on her freshly-washed coat made Rarity groan in disgust. "Ewww!" she said again, even as she tried pulling away. But whatever it was made of, she was stuck fast - the slime-thing refused to let her go.

It only looked like her from the hips forward. Below that was just a blob of the blue goop. It held its forelegs outstretched to her, as though it were trying to hug. Rarity scrabbled backwards, her hooves slipping on the slick porcelain, only to catch onto the shower curtain and pull it down on top of her. The scene was surreal - there she was, lying in the bath, soaking wet on her body and between her legs, Moonbeam Nights warbling from the tinny radio and a blue plastic sheet covering her, while something from a horror movie had latched onto her and was pulling her closer, inch by inch. She gripped her hooves around the rim of the tub, but the monster tugged harder. Trying to concentrate, she put her energy towards a blast of magic, the defensive kind Twilight had taught after that incident with Discord, but then the thing was on her and she found herself quite distracted.

In a moment, the slime had engulfed her lower half up to her cutie mark. The sparks from her horn fizzled as the goo flowed over her marehood, shattering her concentration. Slime wriggled between her nether lips, parting them and exposing her inner flower. "Nnnnn~" Rarity grunted as it rubbed over her sensitive area in a continuous current, sending a steady steam of pleasure through her body. She tried to push herself up again, but found that all her strength had left her. As the thing continued its ministrations, a sudden realization struck her. "You must - oh! - be one of those - ng! - monster things Twilight was talking about." Her teeth clenched with every movement of the slime. "So you're probably not going to - mmm! - hurt me, then."

The warm sensations were making her head feel fuzzy, and with a moan she leaned back, resting her head against the gentle curve of the tub. As the monster continued its work, Rarity relaxed, letting her back legs spread wide as she rested her forelimbs on the rim of the tub. The slime stared at her, blinking questioningly at the change in attitude. "Go on, then," Rarity said. "You've already made quite a mess of things, so a little more won't hurt."

A thick rope of slime forced its way inside her marehood, the sudden intrusion making Rarity gasp. It filled her like nothing ever had before, spilling into every fold and every crevice like a liquid, but still firm and unyielding as her inner muscles clamped down. She shook, her eyes closed and her whole body tensing as waves of ecstasy flowed through her. The slime withdrew, then thrust, marvelously hitting every sensitive spot. Unable to stop herself, Rarity felt her tongue loll out of her mouth in a most un-ladylike way. It just felt too good. She couldn't even think about how hard it was going to be to wash this stuff out of her fur afterwards.

The slime settled into a steady rhythm: long, hard thrusts with quick withdraws. Rarity's entire lower body was inside the slime, and it kept a running current going, so it felt like a dozen gentle hooves were massaging her. She was quivering, her breath coming out in sharp gasps. "S-s-screw the spa-a-a-ah!" Her voiced trailed into a squeak after a particularly deft maneuver by the monster. "I think I'll keep you-oh-oh!"

Seemingly without effort, the slime dragged her down and flipped her over, so that her stomach was flat on the bottom of the tub. "That was quite rude!" Rarity said indignantly, looking back at the slime. It was towering over her now, still with her appearance, but now smiling wickedly. A tendril of goop wormed its way beneath her, wriggling against her barrel until it popped out under her chin. Rarity followed it with her eyes as it stood up straight, thickened, and began probing her face, bumping against her cheek and nose.

"What are you-?" Rarity started to say, but she found the answer as soon as she opened her mouth. With a jolt, the slime pushed inside her marehood again, shoving her forward. Just as suddenly, the tentacle found her mouth and slipped inside with a loud squelch.

Unused to this new violation, Rarity tried to protest, but the thick slime in her mouth gagged her. It tasted like fresh water, and the smell of lavender was heavy in her nostrils. A shudder went through the slime, as though it were adjusting itself to the new stimulation, and it began to piston into her again. Alternating between both ends, it roughly crammed into her pussy, then withdrew and pushed into her mouth, then reversed. Rarity's cheeks bulged as she struggled to take in the monster's length. It prodded against the back of her throat, trying to slip even further inside her.

Rarity moaned, burbling into the goo, as the slime changed its attack. It split the tentacle ravaging her rear into several smaller ones, each of which curved to scrape deliciously against her inner walls as they pulled out. Her eyes rolled up into her head and her body went limp with the intoxication of being fucked from both ends.

Both tentacles thrust hard a final time, then withdrew slowly, leaving Rarity gasping for air and angered at just how empty she could feel. "Are you - cough - done already?" Rarity asked. A line of spittle drooled out of her mouth. "It isn't right to leave a lady unsatis- oh! What are you doing?"

The slime pushed Rarity forward until she left the monster's grip with a wet thlurp. Her ass was slimy and cold from being exposed to the air again, and Rarity dropped her tail down to cover herself. The thing grabbed her purple tail at the base and pulled up, showing off her plot for anyone to see. With a "hoof", the monster rubbed her flanks, moving closer and closer to the center until it stopped on her pink rosebud.

Rarity tensed, her pucker clenching tight against intrusion. She did not consider herself to be "prudish" in sexual matters. While not quite at Pinkie Pie's level of depravity, she had been with more than a couple partners, and had tried a good many things. But she had never tried anal. As far as Rarity was concerned, the anus was only important for the removal of waste from the body. It was a disgusting process, and putting anything into her anus was even more so!

"No, no!" Rarity said. "You are not going in there." As if it hadn't heard her, the slime pressed its hoof harder against her plothole. "I said nooo-oo!"

The monster's leg morphed, the hoof became thinner and cone-shaped, and it just slipped into her ass. Being made of lubricant helped.

Reflexively, Rarity clamped down on the intruder, her ass muscles squeezing the slime viciously. But even as she voiced her objections - and even a few choice, uncouth profanities - the feeling of being stretched, of having such a large thing in so tight a space, got to her. Her protests trailed off into a moan of "Oh Celestiaaa~".

Apparently satisfied that she was satisfied, the slime began to move, pulling and pushing its foreleg into her. Rarity squealed as each thrust went deeper and deeper. Just when Rarity thought it couldn't possibly go further, it stopped, buried deep in her ass. Rarity lay there, breathing heavily and quivering with the sensation.

The two tentacles from before rose up and resumed their chores.

In a flurry of movement, Rarity had something in all three holes. The one in her ass moved with the one in her pussy, both thrusting in and pulling out at the same time. They alternated with the one shoving itself down her throat, so it felt like a couple of stallions were playing tug-of-war on a rope that went through her body.

Rarity had never felt so deliciously full, or so wonderfully ravaged. She groaned continuously, though the sounds were lost in the goo in her mouth. A few thin strands of slime had wrapped around her clit and her nipples and were tugging on them gently, only adding to the mountainous pleasure she was feeling. She rocked back and forth with it, forcing herself down on the slime to get it inside her as best she could.

Another tentacle split from the one in her mouth. This new one wriggled a bit, then shot to her forehead, where it enveloped her horn and began squeezing and jerking it like a hand. The new stimulation was too much for her already over-stimulated mind, and Rarity came.

Fluid gushed out of her marehood, soaking into the slime's bloated body. Her ass and pussy spasmed, clenching down hard on the slime, which thankfully stayed firm. Stars burst in her eyes as blue sparks shot from her horn, fizzling in the slime. Her whole body shook like a leaf in a storm, and her eyes clamped shut.

The orgasm lasted several seconds. When it was over, the slime pulled itself out of her and recollected at one end of the tub. Rarity lay on the porcelain, breathing in the scent of lavender and marecum, until she regained her senses and opened her eyes. She stood on very shaky legs and turned to face her assailant. Her jaw was sore, and she knew she would feel it in her rear very soon.

"I... I should probably call Twilight."

***

Twilight glanced curiously around Rarity's bedroom. "I thought you wanted to ask me something about the Equestrian Equine Explorer's Guide to the Equine-Monstrum," she said.

Rarity gestured towards the bathroom door. "Just through there, please." Twilight nodded and trotted through. Rarity followed behind and, with a touch of magic, drew back the shower curtains.

Inside was the slime, still maintaining Rarity's appearance. It beamed when it saw the unicorn, and held its legs up for an embrace.

"You too, huh?" Twilight said. Rarity grinned shamefacedly, and explained what had happened, leaving out a few key points.

Flipping through a thick book of strange drawings and cramped text, Twilight looked between the creature and the pages until she stopped at one. "It's called a 'slime'," Twilight said. "They live near rivers and lakes, places where they can get to water easily. If they're away from water for too long, they can dry up and die." She stared down at the slime, which looked back up at her with wide eyes. "This one probably got into the water tower somehow, and traveled here through the pipes." She frowned suspiciously. "They're not supposed to come this close to where ponies live, though, so I'm not sure how it would have ended up in the water tower..."

Levitating a quill and notebook out of her saddlebag, Twilight took down a few notes. "That's weird," she said to herself. "These monsters never come into the safe zones, and now we've got two... I wonder..." She snapped the book shut, startling Rarity, who had been reading over her shoulder. "I want to study this a little more. This kind of slime can't talk, but maybe Fluttershy knows a way to ask it questions."

"I'm sorry, did you say, 'this kind of slime'?"

"Yes," Twilight said. "There are all sorts of slimes, according to the Guide. In fact, you're lucky this one wasn't green - those ones are acidic!" Rarity paled (as much as a pony with a white coat can pale). "Anyway, I'll go ahead and teleport it over to my lab for you, get it out of your shower."

"No!" Rarity blurted out. Twilight stared in surprise, and Rarity blushed. "I, uh, it, I think it likes it here." Indeed, the slime had become fascinated with the spigots and was playing with them and burbling happily. "And I don't mind it so much." She started to sweat under Twilight's questioning glare. "It washes off with water, and it even rejuvenates the skin!"

Twilight continued to stare, then rolled her eyes and muttered, "All the ponies in this town are crazy."

After a few more questions and copious note-taking, Twilight took her leave. Rarity saw her to the door and, after agreeing to let Twilight examine the slime further when needed, waved goodbye to her friend. The sun was setting in the west, casting long shadows over the road, but the heat of the day lingered. A bead of sweat dripped down Rarity's forehead, and she wiped it away with a hoof.

"Phew!" she said. "I could really use a shower."

***

A/N: Thanks for sticking with me. Had to write through finals, and it was tough going. Next up is Applejack, and I've got her chapter all planned out. If you have an idea for a monster that Pinkie Pie could have fun with, though, leave a comment or send me a PM and let me know. That pony is hard to pair up. If you enjoyed the story, a thumb, a comment, or a track would all be much appreciated. If not, leave a comment and let me know why! - In_The_Sun