It was a day like any other in ponyville, the Pegasus cleared the sky of gloomy clouds that threatened to drop rain or snow at but a moments notice. A young grey coated mare by the name of Thunder Chaser, with a blue streak running through her blonde mane and tail was tackling her job of cloud bucking with all the bravado of Rainbow Dash, and the hard working attitude of Apple Jack. After all if you wanted to join the Wonderbolts you would have to work hard!

The grey coated mare sped forward bucking the clouds over ponyville in 15 seconds flat! Not exactly a record she knew but you had to start somewhere right? After finishing her cloud busting duties for the day she flew back to the Ponyville Weather office. For how close they were to Cloudsdale there really weren’t that many Pegasus Ponies that worked here. It was mostly Earth Ponies that handled the daily paperwork. The building itself was pretty bland, just a basic 2 floor barn office. There are about 50 desks lined up on the first floor, where the Pegasus Ponies would go over their daily weather schedules.

As Thunder Chaser approached her own desk she noticed a large brown package sitting on top of it, on the package was a hoof written note “Hey Thunder Chaser the potions all ready to go, so here’s the supplies for the “Foal” we’ll be sitting! Love Starlight Charmer.” Thunder Chaser could barely contain her excitement as she left the building, she stopped only to talk to her boss about taking some time off. Before stopping at the bosses office she grabbed her saddle bags and put her package in the bag on her right. She knocked before she heard the familiar “Yes! Come in.” The boss was an older male Pegasus with a light blue mane and dark green coat, his name is Thunder Blitz.

“Well Chase, you have been working very hard lately so I don’t see the harm in letting you have some paid vacation time!” The boss of the weather team said leaning in close to Thunder Chaser, dropping his voice down to a whisper then saying “I took the liberty of keeping the package away from prying eyes but maybe you should have Starlight drop off your foal supplies at home next time hmm?” Said Thunder blitz chuckling to himself.

Thunder Chaser blushed a deep shade of red before replying in a barely audible whisper “I-I-I don’t know what you’re talking about!” . She trotted out of the Weather office, heading towards the center of town. The streets of ponyville were bustling with activity, numerous stalls lined the streets and on more than one occasion Thunder Chaser was stopped by one of these vendor ponies.

They always had the same things to say: “How bout’ some of these here carrots miss? Only 5 bits!” the carrot selling mare nearly shouted shoving the carrots into her face.

“Golden Harvest! I don’t mean to be rude but I’m really in a hurry to see Starlight Charmer today.” Thunder Chaser replied politely. Golden Harvest stared at the mare in front of her with a questioning look then merely shrugged walking back to her Carrot stall.

Thunder Chaser trotted happily towards the Golden Oaks Library, a few short feet from the door it suddenly sprang open and a chromatic blur sped out from inside knocking Thunder Chaser over. “Ouch!! Rainbow Dash watch where you’re going!” Shouted Thunder Chaser offering her a helping hoof. Grateful for the helping hoof Rainbow got up off the ground and examined the package lying on the dirt next to her.

“ Hahahah Foal supplies?! I didn’t know you liked to wear-” Before Rainbow could finish her sentence she was enveloped in a Violet magical Aura that snapped her mouth shut.

“Rainbow Dash! It’s not nice to look at other Ponies mail without permission first! Sorry Chase here’s that book on parenting you wanted to borrow” Said Twilight Sparkle levitating a book into one of Thunder Chasers saddle bags. “Although if I may ask why did you want a book on parenting? You’re not.. Oh my gosh you aren’t with a foal are you?!” Cried Twilight Sparkle her eyes growing large with surprise and fear.

“What?! No Twilight! And actually the book is for Starlight Charmer not me!” Replied Thunder Chaser her embarrassment now very apparent by the deep shade of red her face had turned. Twilight picked up the package and saw the hoof written note on the top of it.

“Aww! You and Starlight are foal sitting together?! Whose the lucky little foal? Wait how come foal has quotation marks around it?” Said Twilight Sparkle putting a hoof to her forehead and rubbing it thoughtfully, after a few moments of pondering she decided to undue her submission magic on Rainbow Dash, but not before she asked the 100 bit question.

Dropping her voice down to a whisper so that only her and Chaser would hear she asked “Chaser a-a-are you an Adult foal?” Twilight Sparkle then levitated the package back into Thunder Chasers left saddlebag. The Aura of violet magic faded off of Rainbow’s snout and she couldn’t help but snort with mild amusement as she watched her co-worker scramble for words.

“T-t-that’s none of your business Miss Twilight Sparkle!” Thunder Chaser nearly shouted before taking to the skies. She thought she was going to be able to finally have some peace and quiet before meeting her marefriend but it was short lived as a chromatic blur shot past her. Great, Thunder Chaser thought what does Rainbow want?

"Heheh Thunder Chaser you’re getting faster but you know I can still out fly you any day! Anyways I know you’re in a hurry to get to your special some ponies place- Hey! Don’t give me that look we all know you and Starlight Charmer have been dating for the past year.” Thunder Chaser stopped mid-flight hovering on the spot, before replying to Rainbow “H-how did you find out?”. “Haha! From you silly! Now Flitter owes me 10 bits!” Replied Rainbow Dash with a smug look on her face.

Before Thunder Chaser could even think of a snarky reply to Rainbow Dashes comment, a green magical aura wrapped itself around Rainbow’s tale pulling her down into one of the many ponds scattered around the outskirts of ponyville. where she landed with a loud splash. “Ha! That will teach you to pry into another mares love life. Hey Thunder Chaser! Are you ready for our date tonight?” Called a White coated Unicorn Mare who had an emerald green mane from the ground below Thunder Chaser.

A mischievous smile appeared on Chasers lips, I’ll tackle hug her! Thought Thunder Chaser as she sped towards her marefriend. Moments before the expected impact Starlight Charmer drew upon her magic and let out a quiet giggle, Thunder Chaser was suddenly stopped inches away from her mare friends face. She wasn’t quite sure how to react to this, and she sputtered for words “How? When? WHA-” Her displeasure was cut short when Starlight Charmer planted a loving kiss on her lips. A feeling of warmth spread through Chasers body as she blushed bright red, a spark seemed to pass between the two when they kissed. Thunder Chaser became visibly relaxed her eyes drooping shut enjoying the pleasure of the gentle yet fierce kiss.

“I’ve missed you these past few nights you know… A mare get’s lonely when her bed’s half empty if you catchy my drift?” said Starlight Charmer breaking off their kiss with a devious twinkle in her eye.

“Get a room you two!” yelled Rainbow Dash before she jumped out of the pond and sped off towards her cloud home that floated above the everfree forest. “

I got your care package. Now about this potion you said you had…” asked Thunder Chaser letting her voice trail off before gently nuzzling her lovers neck. Giggling loudly Starlight Charmer couldn’t help but blush, even though her and Chaser had been together for just over a year now it had taken a considerable amount of time to get the shy Pegasus to open up about herself. Sighing gently she kissed Thunder Chaser on the cheek before trotting toward her home.

Starlight Charmer’s home wasn’t your typical Earth Pony home, it was a luxurious two floor home that had everything a mare could want in it. The outside of the home was pretty average, a small simple garden where Starlight liked to grow flowers. After all her cutie mark was a Rose within Flask symbolizing her talents in Botany and Potion making. Two bathrooms, because well everyone knows that Mare’s spend a lot more time in there than Stallions do. One thing that may have struck somepony as odd was the appearance of a foal changing table in each bathroom.

Often when she had guests over they asked her about this strange feature to which she usually replied “A mare must always be prepared for any situation!”. This response was usually greeted with mild amusement and more often than not agreement. Her home also had 3 bedrooms, two rooms for adult ponies and what appeared to be a little Fillies room.

The two mares trotted up to the porch before Starlight opened up the door and said to her mate “After you my sweet filly”. As they walked inside Starlight used her magic to light up her home. Starlight led Thunder Chaser to the kitchen, before she told Thunder Chaser to sit down and make herself at home she levitated her “Care package” out of the saddle bags and up onto the table. “Open up your present dear, I know you’ll like it!” said Starlight sweetly as she levitated a bottle of red liquid from one of her many shelves scattered around the kitchen, setting the bottle down on the table. She then levitated a cup from her cupboard where she kept them and set it down on the table and poured the liquid into the cup.

“Well okay Mommy!” replied Thunder Chaser giggling as she tore off the brown paper really embracing her inner foal, the first thing she pulled out of the box was a beautiful dress for a filly that complimented her mane and coat colour. “M-mommy is this my dress?” Asked Thunder Chaser her eyes wide with amazement. “Why yes my little filly of course it’s yours!” replied Starlight clearly pleased that her mare friend liked the dress. Thunder Chaser began to sniffle just like a foal would before saying “B-b-but mommy I won’t fit into that pretty dress! I’m too big!” her sniffles soon gave way to full on sobs.

Unsure of how to react Starlight levitated the book on parenting out of Chasers saddle bag and quickly browsed through it looking for a section on how to calm down an upset foal. Shoot thought Starlight, I didn’t pack her a pacifier! Oh well I guess I’ll just have to go for plan B. Starlight’s horn began to glow a light green, she pointed her head toward her lover and gently picked her up with magic and brought her over. “Shh, quiet now my sweet Filly. I told you I had a plan didn’t I? The potion I mentioned to you a few weeks a go will let you truly be a foal again. You’d like that wouldn’t you sweetie?” Asked Starlight in a soft reassuring tone.

“I-I’ll be a *hic* foal again? R-really mommy?!” Asked Thunder Chaser as her sobs once more became sniffles.

“Of course! I would never lie to you sweetie. There are side effects of this potion though.“ Replied Starlight Sweetly as she gently stroked her lovers mane in a reassuring manner.

"What kind of side effects mommy?” Asked Thunder Chaser with child like curiosity.

“Ah ah! No more questions until you finish unwrapping your present sweetie!” said Starlight levitating her mare friend back to her seat at the table and setting her down.

Thunder Chaser giggled softly and began to root through the box when she felt her hooves brushed up against something very soft and plush. No way she thought, did she really get me a plush toy? She couldn’t contain her excitement anymore and she picked up the box and dumped the contents onto the table much like how a young filly would do so with their toys.

From the box fell a Spitfire plush toy, and a large package of Foal diapers, wipes and Foal powder and tickets to a children’s play in Canterlot. “Wow mommy! You sure know how to make a care package.” said Thunder Chaser blushing bright red. “Now that I’ve finished opening up my present, could you please explain the side effects of the potion?” asked Thunder Chaser sweetly.

“Aww! I can’t resist that charm of yours Chaser.” Starlight walked over to where Chaser was sitting and kissed her gently on the forehead, before continuing. “Well the side effects include but aren’t limited to: Complete loss of bladder control, your cutie mark will fade away temporarily, loss of basic motor skills. Those are all the things listed if there are any other effects I guess we’ll find out! Oh and don’t worry you’ll still have the mind of a grown mare so if you need to be changed or fed don’t hesitate to ask okay?”

"O-okay mommy, but I’m a little scared. W-What if the potion doesn’t work right and I become a foal permanently?!” cried Thunder Chaser once again beginning to panic and almost on the verge of tears again.

“Shh hush now sweet Filly. This potion was tested by the royal Apothecary in Canterlot, I assure you there are no permanent side effects.” said Starlight in an attempt to calm down her panicking mate.

Thunder Chaser looked at her mate then down at the cup with the potion in it in front of her. She gave herself a few moments to calm down before she drank the potion in one swallow. The potion tasted strangely like cherries and apple cider. As the potion began to take effect Thunder Chaser began to feel a strange feeling deep within her. An overwhelming pressure seemed to build up inside of her belly before all at once the pressure disappeared. Before she began to process what this feeling was she realized her back legs were warm and wet.

“Oh no Thunder Chaser! You wet all over the floor! Come on little filly let‘s get you cleaned up and in a diaper shall we? ” said Starlight in a sincere motherly tone before levitating the small grey coated Pegasus filly in front of her. As she trotted toward the bathroom down the hall from the kitchen she set Thunder Chaser down on the floor gently. “Sorry sweetie I can’t levitate you and the diapers at the same time, I’ll be right back so just sit tight okay?” Said Starlight in kind motherly tone.

Thunder Chaser sniffled a few times before nodding her head in agreement. Starlight trotted back down to the kitchen and levitated the foal supplies she would need before heading back down the hallways to the awaiting Thunder Chaser.
Thunder Chaser sat on the plush carpeted floor just outside of the bathroom. Her sniffles soon gave way to full on sobs again as the unfamiliar pressure began to build up inside of her belly. Uh oh thought Thunder Chaser I’m going to Pee all over Starlight’s carpet!

The pressure in her belly was beginning to become overwhelming and Thunder Chaser shut her eyes tightly. Her body screamed for the release of the pressure, suddenly there was a growing warm sensation and a hissing noise as her body released a stream of urine. “MOMMY! I’m so sorry I went all over your carpet” Cried Thunder Chaser her tears and sobs now turning into screams of discomfort.

Starlight ran from the kitchen as fast her legs could take her as soon as she heard Chaser scream, with her she carried all the foal supplies in her magical green aura. As she approached Thunder Chaser she became aware of a growing smell of urine, “Aww! Did my little filly have an accident on the floor?” asked Starlight sweetly picking up the sobbing filly from the wet spot on the floor and placing her on her back.

As they walked to the bathroom Starlight tried to calm down the sobbing filly by making cooing sounds at her. Thunder Chaser’s sobs soon turned to sniffles and then to quiet giggles. Starlight walked into the large bathroom that was situated just down the hall from the little fillies room, as the two entered the bathroom some light’s flickered on seemingly out of nowhere.

Thunder Chaser let out a frightened shriek and began to cry again, her shrill screams shattering the tranquil atmosphere that had begun to set in. “It’s okay Chaser, Starlight’s here I won’t let anypony hurt you. I promise” cooed Starlight levitating the foal supplies onto the changing table.

“*Sniff* *Hic* P-p-pinkie promise?” replied Thunder Chaser her voice quivering with fear.

“*Ahem* Cross my heart, hope to fly, stick a cupcake in my eye!” Starlight did the motions and even gently poked herself in the eye. Thunder Chaser giggled softly as Starlight picked her up in a green magical aura placing her on the foal changing table. She levitated a few wet wipes out of their container and began to clean up Thunder Chaser nether regions, Thunder Chaser let out a giggle

“Heheh that tickles Starlight!” she said between giggles. After she was done cleaning Chaser, Starlight levitated a diaper out of it’s package and placed it on the foal changing table. “Lift your legs up sweetie!” Asked Starlight sweetly, “Okay Starlight!” replied Thunder Chaser with some clear effort showing on her face as she managed to lift her back legs up into the air.

Starlight placed the pink filly diaper under her bottom and levitated a container of Foal Powder over, putting on a generous amount Thunder Chasers nether region was now a white in colour instead of it’s usual light grey. “How come you put so much powder on me Starlight?” Asked Thunder Chaser as Starlight Charmer fastened on her diaper.

“It’s so you don’t get a rash sweetie. There feel better now that you’re in a diaper my sweet filly?” Answered Starlight Charmer with a motherly tone entering her voice. “Hehehe yes I do. Thank you so much for doing this for me Starlight. It means so much to me.” replied Thunder Chaser giggling slightly.

Starlight Charmer merely smiled down at her lover and kissed her tenderly on the forehead. “I would do anything for you Thunder Chaser. You must be starving and thirsty after those two accidents, come along now sweetie!” Said Starlight Charmer levitating Thunder Chaser, and placing her on her back. “Starlight! I can walk to the kitchen myself, I’m a big pony remember?” Said Thunder Chaser sweetly nuzzling the back of her mates neck, she spread her tiny wings and flapped them a few times testing her weight on them before she attempted to glide down to the floor a few feet below. She leaped gracefully off of Starlight Charmer’s back, spreading her tiny wings to glide down to the floor below.

Her wings buckled almost immediately after her opening them up to glide off of Starlight’s back, and she fell heavily to the floor with a thud. “*Sniff* *sniff* O-ouch!” Shouted Thunder Chaser tears forming in her big blue eyes.

“Oh my gosh Thunder Chaser are you okay?!” Cried Starlight levitating Thunder Chaser off the floor and onto her back

“WAAAAAAAH!” Screamed Thunder Chaser, her hooves hitting Starlight’s sides over and over again.

“THUNDER CHASER! Please settle down, I’ll have a look at you when we get into the kitchen okay?” Asked Starlight gently. Her only response was more screams and hitting on her sides. Sighing to herself Starlight trotted to the kitchen, she levitated Thunder Chaser off her back and onto a counter-top. “Show me where it hurts sweetie.” asked Starlight sincerely,

“R-right here Starlight” replied Thunder Chaser pointing at her left wing joint. Starlight examined Thunder Chasers wing who was squirming under Starlight’s hooves. “Thunder Chaser stop squirming, I can’t see if you broke anything if you keep struggling!” said Starlight in a stern tone.

Thunder Chaser stopped squirming, “Sorry Starlight my wings are ticklish you know that!” replied Thunder Chaser with a giggle. Starlight gently prodded the wing joints with her fore hooves, Thunder Chaser breathed sharply when the hoof pressed on the left joint.

“Ow ow ow!” Cried Thunder Chaser, tears welling up in her eyes once again. Seeing the impending disaster Starlight quickly cast a transfiguration spell on a cup that was sitting on the counter-top, turning it into a pacifier. Levitating the pacifier with her magic Starlight plopped it into Thunder Chasers mouth, her first reaction was to spit it out. Then she remembered it was supposed to help soothe foals and she definitely needed soothing. She gave it a tentative suckle, then another and soon another her eyes began to grow heavy and her breathing slowed.

Starlight examined Thunder Chaser’s wing joint more closely now that she had fallen asleep, at first glance it didn’t appear there was anything wrong but upon further inspection she found a small cut. The cut wasn’t very big but it looked quite deep, levitating some medical supplies out of a nearby cupboard she quietly cast a mild sedative spell so that Thunder Chaser wouldn’t wake up while she cleaned and bandaged the cut. Starlight quickly cleaned and bandaged the cut with a pink bandage, then she reversed the sedative spell on Thunder Chaser who woke up moments later.

Thunder Chaser opened up one blue eye and gazed at Starlight clear confusion showing in her eyes. “You fell asleep after I gave you that pacifier sweetie.” answered Starlight to the unspoken question. Thunder Chaser yawned sleepily, Starlight couldn’t help but giggle at her mates cute yawn.

“*Yawn* I’m Hungry!” Said Thunder Chaser with a smile on her face, her stomach growled and she giggled. Starlight smiled down at Thunder Chaser then levitated a bottle of Foalmula to her mouth, placing the rose coloured nipple into her mouth she began to suckle voraciously. Five minutes passed and the bottle was now empty and Thunder Chaser looked like she was about ready to burst. “My Stomach feels funny...” Thunder Chaser trailed off looking at the floor.

“Hehe you need to be burped sweetheart.” replied Starlight levitating Thunder Chaser to her awaiting hooves, she placed the small foal against her neck and began to gently pat her back. Suddenly Thunder Chaser belched very loudly, the sound came as a surprise to them both and they burst into a fit of giggles.

“My tummy feels funny Starlight!” Said Thunder Chaser loudly between giggles.

“Excuse me? Foals don’t call their mommies by their first name do they Chaser?” Replied Starlight with a slight smile forming on her face.

“Hehehe no Mommy they don’t!” said Thunder Chaser giggling, her mirth however was cut short by a growing warmth in the crotch and seat of her diaper.

A smell much akin to eggs that have been left out for too long began to fill the kitchen. Thunder Chaser sat in her now messy diaper stunned by the realization that she had just messed herself. She sniffled a few times before bursting into tears screaming “MOMMY!” as loud as her tiny lungs could. Aware of her mates discomfort Starlight first levitated the pacifier back into Thunder Chasers mouth before levitating the screaming foal off the counter. “Shh it’s okay Chaser, you just had an accident all fillies have them. Mommy will get you all cleaned up okay?” cooed Starlight as her and Thunder Chaser walked and floated toward the bathroom.

Starlight’s only response was quiet sobs from the small filly. They entered the bathroom and the lights once again flickered on magically, Starlight placed Thunder Chaser on the changing table and strapped her down. From underneath the changing table she levitated up the wet wipes, a fresh diaper, and a bottle of foal powder. Thunder Chaser slammed her hooves against the changing over and over again as if it would somehow ease her growing discomfort. Starlight untaped the diaper from Thunder Chaser’s waist, levitating it out from underneath her bottom she rolled it up and tossed into the trash bin situated beside the changing station. She began to gently clean Thunder Chaser’s bottom and filly parts with a few wet wipes, opening up the fresh diaper she levitated Chaser’s bottom slightly and slid the filly diaper underneath her. Starlight applied a generous helping of foal powder, rubbing it gently into her mates coat before taping Thunder Chaser’s diaper on her.

Thunder Chaser was still quietly sobbing when her and Starlight left the bathroom. On Starlights back she had a better view of the house and she took notice that they were heading toward the fillies room.

“Okay Thunder Chaser it’s nap time for somepony. You’re cranky and after that ordeal you should get some sleep okay sweetie?” said Starlight in a gentle tone of voice as she opened the door to the fillies room.

“Mommy? Will you tell me a bedtime story?” asked Thunder Chaser sweetly, using her adorableness to her advantage she made her eyes quiver slightly as if she might burst into tears again at any moment.

Sighing ever so slightly Starlight Charmer smiled down at Chaser placing the pacifier in her mouth then walking over to the crib that was located in the middle of the room, she laid Thunder Chaser down in the crib wrapping her up tightly in a few blankets before beginning her story.

“Once upon a time in Equestria lived two Sisters who ruled together. The big sister ruled over the ponies in the day with her beautiful sun, and the younger sister ruled the Night and crafted the wonderful night sky."

"Cewestia and Woona!" yawned Thunder Chaser, an eye drooping shut

Starlight nodded her head and continued. "All the ponies played and reveled in the day but slept through the wonderful night. Celestia assured her younger sister that ponies did enjoy the night, she just had to look harder. Young Luna became frustrated, and jealous. She grew to hate the day and the ponies who slept during her beautiful night. Luna's jealousy and anger soon consumed her, she was tired of everypony reveling in her sister's day. The anger, jealousy, spit and pain of being ignored took it's toll and she became Nightmare Moon."

Starlight stopped the story for a moment to see if Chaser was still awake. She lay there wrapped up in her blankets snoring softly, Starlight leaned over and kiss her on the nose. "Goodnight Chaser, have sweet dreams"

End of Chapter 1.

Author's Note

This is kind of a Fetishy story. If you're not into Age Play then I advise you don't read this unless you have some constructive criticism to offer or you're just curious. Either way you have been warned!