A Steamy Christmas

by The Irish Brony

Rating: mature
Tags: Profanity, Random, Sex, My Little Pony: Friendship is Magic, Romance, Original Character, Porn, Fetish
Length: 3622

Hearths Warming night becomes one to remember when two parents, Acid Flask and Blood Moon, experience a blood moon that night. It changes Blood Moon into a sex driven Mare. Which means fun in bed for Acid Flask.

The night of Hearths Warming is a special time for kids and adults alike. It gets even better for two parents when a blood moon appears in the early night. The bat mare Blood Moon has a little quirk that happens when a blood moon appears. She and her husband Acid Flask take full advantage of it during the blood moon for some sexy time fun.

Sex: A bit of growth, very horny mare, size difference, face sitting, Stallion on Mare, heat, technically a transformation, big dick, and a bit of dick compliments

Published 2022-12-23 20:40:00 UTC
Last updated 2022-12-23 20:40:00 UTC

A Steamy Christmas

Acid is a short red unicorn stallion with blue zebra markings on his legs, arms, and around his neck. His unicorn horn is bent up at a weird unnatural angle. He has spiked-back hair like Spitfire, but with red and blue instead of yellow and orange. His cutie mark is a half-empty flask with an orange liquid inside bubbling out. He lies in a bed with his beloved wife spooning him from behind.

Her name is Blood Moon. She is a very tall bat pony mare with scars littering her body and face. Her fur is a dark gray while her main and tail are red and black. Her main is short and spikes forwards. Her cutie mark is of a blood-red moon.

Acid cuddles into Moon's warm embrace as he slowly opens his sparkling orange eyes. He lets out a yawn as the light from the sun dies out and leaves the lite glow from the moon. Acid sighs with a small smile on his face before flipping around to face Moon. He looks up at her still sleeping. He wraps his hoofs around her body and nuzzles into her furry chest, causing Moon to slowly wake up. She opens her blood-red eyes before looking down at the stallion cuddling her.

"Good evening to you too," Moon says, hugging Acid a bit tighter.

"It's always good with you," Acid responds, smiling up at Moon. Moon smiles while letting out a little chuckle. Moon's smile fades as the moon slowly starts to turn red. "What is it?" Acid asks before realizing the white light is slowly turning pink. Acid turns to look at the blood moon slowly forming. Acid smiles before turning to Moon and asking, "You're gonna need help with that, aren't you?"

"If you wouldn't mind," Moon replies as Acid sits up.

"I'll get the soundproofing up," Acid says, jumping off the bed and pulling the draw from their nightstand open as the light slowly turns more red.

"You might want to hurry a bit," Moon replies as she sits up. She opens her mouth and uses her tongue to trace the forming fangs in her mouth.

"That was quick," Acid replies as he pulls out a golden collar with a blue gem embedded inside. He places it onto the base of his horn before quickly turning around and walking to the door. He lights his horn up as he locks the door. His horn turns a light orange as the gem on the collar light up. The walls of the room turn a sparkling blue before fading away, leaving behind the sparkl.

"I told you it was quick," Moon replies as her cutie marks start to glow red. "Ah fuck," Moon says, arching her back as her eyes roll into the back of her head. Acid turns around to face Moon as she says, "Here we go,"

Moon's body starts to grow slowly as her fur begins to grow out a bit. Her main slowly growing longer and losing a bit of its spiky nature in favor for a more erratic formation. Her fangs grow out bigger to nearly two inches long. Acid's eyes drift across Moon's slowly growing body until something very interesting catches his eyes. Her rump was growing almost twice as fast as the rest of her body was. Acid blushes as his cock slowly start to unsheaths itself and throb out into the open air.

Moon's body stops growing as her cutie marks stop glowing. Her eyes roll back to normal as an evil-looking grin forms on her face. Her blood-red eyes are now bright red from the moon's new red light. Moon looks over at Acid staring in awe at her new form. His two-foot long, almost longer than his body, dick throbs against the ground.

"I see someone likes the new body," Moon sweetly coos as she bites her lower lip with a smile. Her right hoof drifted down between her legs to attend to her already dripping marehood.

"A little surprised is all," Acid responds, blushing hard as he grabs his dick and holds it to his body.

"About what?" Moon asks, sliding off the bed and stepping onto the ground. She was normally taller than Acid, but now she absolutely towered over his small body. Acid cranes his head up to look at her as she walks over to him. "Is it because of how fast the transformation occurred?" Moon asks, looking down at Acid. She slowly walks over to him as she gently sways her hips. Her normally muscular rump was now much bigger. It was so big that even Acid, standing right in front of her, could see both of her cutie marks. "Or could it be?" Moon asks, leaning down to go face to face with Acid. "You liked watching my rump grow?" Moon asks, raising an eyebrow.

"It does look great," Acid responds. "Not that anything was wrong with it to begin with," Acid frantically adds as Moon walks around to Acid's side and steps over his body. Moon leans down to Acid's ear before whispering,

"There is one thing I didn't tell you about what happened in a blood moon,"

"What is it?" Acid asks, attempting to look up and back at her.

"You know how mares go into heat?" Acid nods. "There's a reason I never get one. It's because all of it is saved for when a blood moon rises." Moon whispers with a big smile. She positions her body over top of Acid's before leaning her body onto his back. "Just imagine a heat, but ten times worse," Moon says, rubbing her body against Acid's. Acid shivers as Moon's warm nethers rub against the top of his rump. His dick throbbing in anticipation. "It's taking so much effort not to flip you over right now and rut you,"

"Then let's begin before I do it first," Acid replies back with a sly smile on his face as he looks up at Moon.

"Horny boy," Moon replies, liking her lips as she continues to rub her body against his back. "I like that," Moon says before stepping off of him and walking slowly back over to the bed. She slowly sways her hips as she walks over to the bed. Her tail swishing out of the way to reveal her glistening vagina to Acid. Acid's dick throbs as he watches her hips sway and her body move smoothly. Every step and movement seeming to be completely paned out a head of time. Moon makes it to the bed before turning around and looking at Acid, who was still staring at her body. "Get over here big boy, or else you get none of this," Moon says, raising her butt up a bit when she refers to this.

"Yes mam," Acid replies with a goofy smile before walking over to Moon. Moon smiles down at him as she climbs into bed with Acid allowing her shortly after. Moon sits down on the bed before Acid sits down across from her. "So what should we start out with?" Acid asks, looking up at Moon in anticipation. "I know doggy style is off the table to begin with because you like to have a little fun before hoof," Acid says matterfactly.

"I was thinking of maybe a little face sitting with my new rump?" Moon asks, leaning down onto all four before pushing her hind legs up and displaying her rump in the air like a puppy. Acid's dick pulses as Acid looks up at Moon's new butt. Her rump was more fat than it was muscle now. It was very plump and yet still proportional with her body in a way that makes it looks so appealing. Moon creeps forward up to Acid before wrapping her hoof around his throbbing cock. Acid shivers as Moon gently strokes the giant, pulsating dick.

"I wouldn't mind having that ass on my face for a bit," Acid responds back. "Just don't suffocate me with it," Acid responds with a little laugh.

"Of course," Moon replies, looking up at Acid. "I wouldn't want to accidentally kill the stallion that has this big of a dick," Moon says seductively before liking his dick from base to tip. Acid lets out a light moan as a shiver shoots up his back, causing him to lean back and fall onto the bed. Moon smiles before standing up and stepping over top of his body. Acid looks up at her butt looming over his head. Moon looks back and down at Acid with a smile before gently sitting her rump onto his face.

Acid sighs as his face is enveloped by her soft rump. His muzzle sitting inches from her dripping slit. He wraps his arms around her lower body before pulling her into his face, moving her vagina closer to his face. Moon's body shivers a bit as her rump pushes around his face. Her wings slightly extended out in excitement as Acid teases her with his tongue.

Acid slides his tongue around the opening of her slit, pushing at the flaps and allowing a bit of her mare juices to flow out of her body and onto his face. His dick throbs in excitement as he slowly makes circles around the entrance with his tongue. Acid finally goes all in and pulls on Moon a bit harder as he dives his tongue deep into her vagina.

"AAAHHH!" Moon lets out an ear piercing moan as her wings shoot out in both directions. She arches her back and pushes herself into his face as her eyes roll up into her head. "Fuck yes!" Moon replies as she lets herself relax and let all the heat take over. She slowly starts humping his face as he starts exploring her insides with his tongue.

His hoofs slowly explore her lower body, sliding across her stomach and causing her to shiver at his touch. His hoofs glide down her back and to her rump. Where they linger for a bit and squees her rump lightly before moving onto her muscular thighs. He directs his hoofs into her inner thighs and slides up to her crotch, where her small breasts lay and wait for him. He pushes against them as he tries to find the nipples before hitting them, causing Moon's body to lock up a bit before relaxing again.

"Yes," Moon replies, placing a hoof on his hoof, gently navigating it to her nipples. "Right there," Moon replies before Acid starts to make circles around her nipples. Moon shivers as his hoofs glid over her very sensitive breasts. "I can't let you have all the fun," Moon replies before looking at the two-foot-long horse cock pulsating in between her legs. She smiles before leaning over a bit and gently wrapping a hoof around the base of his cock. "I think you might just have the biggest cock in the world," Moon says, gently rubbing her cheek against his dick as she gently slides her hoof up and down the base of his cock.

Acid mumbles something untangible while still face deep in her rump. His hips thrust up in response to Moon's teasing, causing her to smile. Moon lets out a happy little hum as she pushes her hips into his face as Acid's tongue slides deeper into her. Her face is a deep red color while her wings strain fully erect at her sides. "Now it's time for a little fun," Moon smiles before licking her lips. She lowers her muzzle to the base of his cock before slipping out her tongue and licking his dick all the way to the tip. Acid moans as his hips twitch in response.

Moon slips the tip of his dick into her mouth while rubbing the base of his dick with her hoofs. She swirls her tongue around the tip of his cock, causing his hips to buck up and sliding a bit more of him into her mouth. Moon gently slide her hooves onto his legs before drifting them down in between his legs. She gently pushes and massages his thighs as she slowly bobs up and down on the tip of his dick. Acid's legs spasm a bit at the soft message as his hips buck up at the slow bobs.

Moon slowly moves up and down, gaining more of his dick with each bob down. Moon's lower body starts to tense up as she feels her climax slowly rising inside of her nethers. Moon grinds her hips against Acid's face as she slides her hoofs under neath of Acid's balls. She gently cradles them in one hoof as the other drifts down to the muscle between his balls and his ass.

She smiles when she lightly pushes on the muscle connecting to his dick. She grinds her rump tighter against his face as she starts bobbing up and down half of his dick at an almost impossibly fast speed. Acid lets out a moan as his entire body shivers in pleasure. His hips thrust up into her mouth as her head comes down. He squeezes her rump, sinking his hooves a bit into her butt as he keeps exploring the walls of her cunt with his tongue.

Moon gently massages the muscle right below his balls, causing his legs and hips to tense up a bit before relaxing. Spurts of pre cum spill out of his dick as Acid shivers in anticipation. Moon pulls off of his cock before sitting up and thrusting her rump hard into his face. Acid whimpers as his dick is left exposed to the cool air.

"Come on," Moon says, grinding faster against his face. "Don't give up on me now, I'm so close," Moon lets a few moans out as her eyes slowly slip up into her head. The pleasure building up inside of her body is almost uncontrollably. Moon lifts ups her ass off his face, slipping his tongue out of her vagina, before slamming down onto his face and letting out a loud moan as her rump jiggles. Her cum flowing out of her and onto Acid's face as her body spasms a bit. Moon lets out a sigh as her body relaxes.

"You ok down there?" Moon asks as she stands up and looks down at Acid.

"A bit wet," Acid replies as he attempts to wipe away the cum off of his face. "And a bit angry you let up right before I was going to cum," Acid says, pouting and crossing his arms in a very sarcastic child-like manner. Moon rolls her eyes as she turns around before laying down on top of Acid's small body. Her rump pushes his dick down as she lays her chin on his chest with a smile on her face.

"Then where would be the fun in that?" Moon asks, tilting her head as Acid looks down at her. "I can cum more than once, but you only have one go,"

"Good point," Acid replies, uncrossing his arms and nodding. "So what next my beautiful bloodsucker?" Acid asks, gently wrapping his arms around the back of her head before he gently places a kiss on her forehead.

"I'm a little tight on my back," Moon sarcastically whins as she gently rubs her rump against his dick, causing it to pulse in response.

"Then let me help you with that," Acid says with a smile before lighting his horn up. In a flash of orange light, the two had switched spots. Moon was laying belly first onto the bed, leaving her back exposed. Acid stands over her body with a smile as his dick pulses against her rump.

"Oh," Moon lets out a surprised gasp as Acid steps onto her back and gently rubs her shoulders. Moon smiles as she closes her eyes. She snuggles into the bed while placing her face into her arms. Acid gently pushes and rolls Moon's back, relieving her of the tension on her back. "Ya, right there," Moon moans as Acid slowly goes down her back and towards her wings. "Oh!" Moon moans, her eyes rolling back as her body tenses up. SHe sighs as her body relaxes again. Her wings spread wide out as Acid tenderly massages the base of her wings.

"You should get your back massaged more often," Acid comments at how tense her wing muscles are.

"But then I wouldn't have your amazing hooves feeling me up," Moon coos as she gently bends her back and pushes her rump a bit up into his throbbing dick. Acid smiles as he gently slides his dick across her rump.

"I think it would feel much better if I was also feeling your insides," Acid responds, shifting a bit to get his dick lined up with her dripping pussy. Moon raises an eyebrow to herself as she tries to decode his response. Her eyes widen as Acid slams his dick into her tight vagina. Moon's eyes roll up into her head as her tongue slips out of her mouth. Her cheeks turn red as her body shivers and her ears flop against her head. His massive dick pulsates against the insides of her tight walls. Her stomick stretching out filled up with his wonderfully large dick.

"Fuck I forgot you were tight," Acid responds, clenching his teeth in a vain attempt at not cumming inside her immediately.

"You're just a bit too big Small Flask," Moon replies, rotating her hips a bit and causing Acid to shiver and let slip out a low moan.

"Stop that or else I'll cum right now," Acid responds.

"And that's a threat?" Moon asks, looking back at Acid with slight confusion.

"I guess not," Acid replies with a little shrug. "But then again, I could just pull out and leave you hanging," Acid replies, slowly pulling out.

"No!" Moon replies, looking back at him with panic on her face. "I mean, please don't," Moon replies, much calmer.

"That's what I thought," Acid replies with a small smug smile before thrusting his dick back into her hard. He hits her hips with such force, that it causes her rump and back legs to go into the air a few inches before falling back down. Moon lets out a moan as her ass is compressed by Acid's hips. "Now just stay there and let little Flask do his work," Acid says before getting back to work.

He starts massaging her lower wings again as he does slow, small, gentle thrusts into her very tight and dripping wet vagina. Moon rests her head on her arms again as a goofy smile forms on her face as she lets her body relax and enjoy the messaging from both the inside and the out. Acid shivers as his dick slides in and out of her tight slit. Acid shifts his body a bit and puts most of his weight on his hind legs as he speeds up his thrusts into her rump.

"Fuck," Moon moans out as she barriers her face into her hoofs. Her entire body moves as Acid pounds her very tight pussy, wich is now leaking cum down her legs. Her ass jiggles with every hip thrust as Acid lets out grunts of exertion. Acid's body starts to lock up as he starts to raise over the edge.

"I'm getting close," Acid grunts threw gritted teeth.

"Fill me up," Moon replies as Acid speeds up a bit. He digs his hooves into the base of her wings, causing her to let out a surprised moan as her back arches down. Moon shovers and moans as the pleaser builds up inside of her again. "Fuck yes," Moon says as Acid's body starts to spasm a bit. "In me," Moon says as Acid quickly wraps his arms around her neck and pulls himself hard into her, slamming his hips hard into hers.

Acid lets out a loud moan slash grunt as he hugs Moon's neck tight. He pushes his hips as deep as he can into her as he lets his cum flow freely into her. Moon shudders as the warm liquid fills her up and flows out of her, causing her to climax and release a bit of her own cum. The two relax after their climaxes had subsided. Acid places his head next to Moon's as he pulls out of her. He lays his body a bit sideways to lay his dick out to dry on the bed. Moon sighs as she lets her lower body and wings relax.

"That... was..." Acid starts.

"Amazing," Moon replies with a smile as she turns to look at him. The blood moon slowly fading away, causing Moon's cutie mark glows again. Her body glows a bit as she shrinks a bit and her body returns back to her normal, skinny, tall but very athletic body.

"Perfect timing," Acid says, looking over at the moon returning back to normal.

"I did explain it didn't last long didn't I?" Moon asks as her eyes return back to normal. "Question,"

"Ya?" Acid asks, laying his head down next to Moon's as he moves his body around to face her.

"I wasn't too horny was I?" Moon asks.

"You were a bit lustful," Acid replies. "Why you ask,"

"Sometimes I don't fully remember what happens," Moon replies.

"Now that's something you didn't tell me," Acid replies. Moon smiles before wrapping her arms around his body and pulling him into a hug. Acid smiles and cuddles up to her soft, furry chest.

"Marry Hearths Warming," Moon says with a big smile.

"Marry Hearths Warming," Acid replies with a smile of his own.