A Captain, an Intern, and a Dirty Diaper

by Prince Ecosis

Rating: mature
Tags: Romance, Original Character, Slice of Life, Sex, Spitfire, My Little Pony: Friendship is Magic
Length: 6812

What happens when you're an intern, who's dating your Captain, and she finds out about a certain kink you have?

My name is Rainstorm, and for three months, I had been a Wonderbolts Intern. But for five years, I was very close friends with my Captain, Spitfire, until we decided to be more than that. But, eventually, she finds out about the one and only kink that I have, and that I've kept a secret for years. What happens when the cat is out of the bag?

Please do NOT read if you have problems with sexual content, diaper usage, farts, or anal.

Published 2016-03-21 02:30:02 UTC
Last updated 2016-03-21 02:30:02 UTC

The Unforgettable Night

Author's Note

Warning!

This fic contains diaper fetish/usage, anal, constant farts, and sexual content. If you have any problems with these, please do not read.

The Unforgettable Night

My name is Rainstorm, Pegasus, twenty-three years old, of Cloudsdale. I was in my room, cleaning up as much as I could before my roommate came back. But, it's not like my roommate cared that much. I mean, she was a little bit of a slob herself, but I always wanted to welcome her back to a clean room. Plus, I felt it would help me keep, maybe even improve my job if she came back to a clean room after the training session.

Anyway, I had been cleaning the room for an hour before I heard the several pitter-patters of hooves running up and down the cloudy hallways as the Wonderbolts Training Session had come to an end and everyone was going to their rooms for the night. I quickly put all the supplies in the closet and made the cloudbed. Right when I heard the sound of a key being inserted in the lock, I smiled and sat down on the bed comfortably as the door opened and Spitfire walked in.

Yep, my roommate is my boss, Spitfire. She was the Captain of Equestria's best flying and performance team, the Wonderbolts. I worked for her, and had been for three months. The bad thing about it is, I was an intern. All I did was clean, and do private training sessions with the Co-Captain, Soarin. But, as much as I worked every day, I never got paid. But, there was something I loved that made me not care about the money.

That was Spitfire. I may had been working for her only for three months, but for five years, I had been her best friend. We had been in the exact same class through all of our years of flight school, and I was the only one who flew better than her by a very narrow margin. After I befriended Spitfire, we ate lunch together, flew together all the time, and even had sleepovers now and then. On my sweet sixteen, Spitfire said she wanted to be more than my best friend, and since then, we've been dating, and it's been the best eight years of my life. Anyway, I smiled as Spitfire walked in and closed the door behind herself, locking it back afterwards.

"Well, hello Spits", I said. Spitfire looked around the clean room and sighed.

"Rain...", she said, "I told you that you didn't have to clean the room. It's your birthday, and you deserve a day-off. I was gonna do it once the session was over".

"I know it's my birthday", I said, "But you've got the most difficult job in the Wonderbolts. You have to spend seven hours out on the training clouds six days a week, supervising thirty different Pegasi. So, I don't need a day off when all I gotta do is make the bed and beat the dust and rain out of the clouds until they're white every day". Spitfire giggled.

"Alright", she said, "I was just tryin' to cut'cha some slack".

"I'm good, Spits", I said, "But... there is something I could use for my birthday".

"What is it?", Spitfire asked. I smiled, flopped onto my back, and spread my hind legs, mimicking a starfish.

"Some birthday sugar, perhaps?", I asked.

Spitfire giggled, ran over to me, and jumped into the bed, landing right on top of me. I buried my hooves in her fiery-orange mane and massaged the back of her head as she pulled me into a long, blissful tongue-kiss, making us both moan passionately as our tongues wrestled each other. Spitfire was a great kisser, and I enjoyed every one we shared. After a solid thirty seconds of kissing, Spitfire finally pulled away, giving my bottom lip a little nibble.

"Oh, Rain...", she said, "Your kisses are like chocolates..." I smiled. Spitfire always compared my kisses to chocolates because that was her favorite junk food. Trust me, if you want Spitfire to do something for you, she'll do it for a box of chocolates.

"Thanks, Spits", I said, kissing her muzzle and making her giggle. We laid there in silence for a few seconds, then I broke the silence. "You know what would be an awesome birthday present?"

"What?", Spitfire asked.

"A paycheck...", I said. Spitfire sighed.

"Rain...", she said, "You know I want to start paying you, but I can't ignore the policy just because you're my coltfriend. You gotta be an intern until-"

"...until I'm ready to be an official Wonderbolt", I finished, cutting her off, "Yeah yeah, I've heard that 200 times". Spitfire giggled again.

"But, at least you get the one thing the other cadets don't get...", she said, licking my cheek like a dog. I smiled.

"Oh, I know", I said, "And I've been getting it for eight years". Spitfire gave me another little smooch.

"Scooch over", she said, "I'm exhausted". I smiled and scooted onto my half of the bed. Spitfire lazily rolled off of me and onto the soft bed, giving a very loud sigh. She then reached into her mini-refrigerator, pulled out and opened a can of soda, and downed half in two gulps, giving another sigh and a silent burp.

"Oh Celestia...", she said, her voice slurring from comfort, "I love this bed soooo much..."

"You'll probably love it more if you take off your uniform", I said, pointing to her blue spandex uniform.

"Hmm, I guess you're right", Spitfire said, "But I'm too comfortable right now. I'll do it later". I smiled as she gave me the rest of the soda and I finished it off.

"OK then", I said, "Your choice". Spitfire chuckled and rested her back against the bed. She then raised one of her hind legs and grunted, giving a loud, raspy fart, and a sigh of relief, completely ignoring it afterwards. I looked at her with an annoyed look.

"Really, Spits?", I said. Spitfire chuckled.

"What?", she asked, "I had four bean-broccoli-and-cheese burritos with guacamole for lunch, and I've been holding that in for three hours. Had to let it out eventually. Plus, this is my room too, ya know".

"Yeah yeah...", I said, blocking out her stench with my wing, "You could at least excuse yourself".

"And I don't know why you're complaining", Spitfire said, "Remember that time you slept over at my house in seventh grade? You farted really loud at the table while we were eating, and I took the blame for it so Dad wouldn't send you home early. It was a lethal fart too, you know".

"But did I not make up for it the following week when you did it while we were freeflying in school?", I asked, "And you call mine lethal? Every single student behind us almost passed out because of your fart, and I said it was me to cover your ass". Spitfire giggled.

"Hey, you gotta admit, that was pretty funny", she said, "You called me 'Fartfire' for a week too. That's one of my funniest memories right there". I folded my wing back against my side as the rancid smell finally stopped.

"Yeah, that was pretty funny", I said, "Well, now that you've had your evening fart, whaddya say we run to Pepper's and grab some dinner, on me?"

"That'd be great", Spitfire said, "But first, can I ask you something?"

"Sure", I said, rubbing my eyes as they itched a little, "What is it?" My eyes closed, I felt the bed shift as Spitfire moved, and heard he sounds of rustling paper.

"What's this?", she asked. I opened my eyes as the itching stopped and I spoke.

"What's wh-?"

I cut myself off as I saw what she was talking about. She was showing me a magazine, a Playcolt magazine. I felt my stomach drop so much that I thought it was going to fall out of my ass, and my hooves were getting sweaty. Spitfire had found my only pornographic magazine, and I thought she never would.

"Rain...", she said, "Why did I find this under the bed?"

"Uh... uh...", I said, "I don't know... maybe one of the other cadets left it here..."

"Rain... if one of the cadets were to leave it in here...", Spitfire said, "Why would they leave it under the bed? Plus, our room door locks automatically when it closes, and you and I are the only ones with keys". I looked down, knowing all of that was true. "So, again, why was this under the bed?" I knew I could name excuses until Equestria came to an end, and Spitfire would have reasons to prove me wrong, so I swallowed my pride and confessed.

"It's... mine...", I said.

"Wh-why... or even how, do you enjoy smut like this, Rainstorm?", Spitfire asked, making me gulp. Whenever she used both parts of my name, she was serious. "Even worse...!" She read the title. "...'Diaper Fetish Week'?! Gross!" She threw the magazine across the room. If there was one thing every single member of the Wonderbolts knew about Spitfire, it was that she completely hated pornography. Trust me, you wouldn't find any related magazines in Spitfire's room or anything related to it in her laptop history.

"Spits", I said, "Look, I know you hate porn, but I just needed something to satisfy myself to..." I placed my hoof on her shoulder. "...and...diaper fetish is my kink... it has been for three years..."

"But if you wanted some excitement in the bedroom, why didn't you just say so?", Spitfire asked.

"Because I thought you wouldn't do it...", I said, "I thought you were one of those mares that only do it if they're married..." Spitfire's frown slowly became a smile.

"Well...", she said, kissing my muzzle, "It is your birthday, and I haven't thought of a gift for you yet... so... I've got an idea..." I looked at her.

"What do you mean...?", I asked.

"Even though I find it kinda weird", Spitfire said, "I'm glad you like mares with diaper fetishes... because... I've got a bit of a surprise for you..."

I sat on the bed with a bit of confusion as Spitfire hopped off the bed and stood at the foot of it. She then unstrapped her goggles from her head, placed them in her dresser, and worked her front legs out of her uniform until they were free. Once they were, she used them to slowly slide the rest of it off until it hit the floor, exposing her yellow coat, which was lightly dampened from sweat, thanks to the latex uniform. But, once it slid off her waist, I saw something I was not expecting. Spitfire was wearing a diaper.

"Spits!", I said, "Is that...? Are you...?"

"Yep", she said, "I'm wearing a diaper".

"But... why...?", I asked.

"Hey, when you gotta stand out on the training clouds for seven hours a day, walking back and forth, demonstrating flying moves, and yelling all the time", Spitfire said, "You don't get time for bathroom breaks, because the few minutes while you're gone, something could happen, and you won't be around for it. Hell, I barely have time to pee and shower in the morning before I gotta be out there. So, I decided to go with a solution, and I just go in these when I have to".

"You do it on purpose...?", I asked.

"Yep", Spitfire said, "Every time I'm out there, and I gotta go, I just do it in my diaper".

"But... how do you get away with that...?", I asked, "The smell? The squatting? The bulges? The feeling?"

"Got it all covered", Spitfire said, "Usually, my uniform catches the stink, but if it does get out, I just blame it on the cadets, and everyone looks at each other with the 'Was it You?' look".

"OK...", I said.

"And as for the squatting", Spitfire said, "For number one, I just do it while I'm standing still, and for number two, I make a chair out of cloud with a small hole and sit in it, making sure not to look too obvious".

"Uh-huh", I said. I began to imagine what that would look like. It slowly began to turn me on as I felt a tingle down below.

"And as for the bulging", Spitfire said, "I use my tail to cover it, and tuck it in the bottom of my uniform so the wind can't blow it up"

"Uh-huh...", I repeated.

"And for the feeling", Spitfire said, "I don't mind it. In fact, I might even like it a little. It does feel great to have a warm feeling between your hind legs when it gets colder as you fly higher". I nodded in agreement. "Plus, I bet you couldn't tell I was wearing this with my uniform".

"I wasn't focusing down there when you walked in...", I said.

"Well, have you any other times?", she asked.

"No...", I said.

"Exactly", Spitfire said, "No one can. That's why I do it". She got back in bed, laying herself on top of me. "But, I didn't really have to go today. That's why my diaper is clean".

"But wait...", I said, "If you go in those diapers purposely, and like the feeling... then does that mean you have a diaper fetish...?" Spitfire smiled.

"I guess I do", she said, "And that's good news for you". She kissed my cheek. "Plus..." Spitfire lifted her hind leg and farted again, sighing. "It's your lucky day Rain... because I gotta poop and pee really bad right now". My eyes widened in excitement.

"You mean... you're gonna...?", I asked.

"Yep...", she said, pushing out another fart, "...I'm gonna poop and pee in this diaper, right in front of you..." I nearly jumped off the bed in happiness.

"Y-you mean it?!", I asked, "You're really gonna do it?!"

"Yes", Spitfire said, "Unless you want me to take my diaper off and go in the boring toilet..."

"NO!", I yelled, covering my mouth, "I mean... no... I want you to go in front of me..." Spitfire chuckled.

"Alright", she said, "But try and keep your voice down. The cadets are trying to sleep, and I'm not trying to have my diaper secret exposed. You're the only one who knows about it, and I wanna keep it that way". I nodded happily.

"Your secret is safe with me", I said. Spitfire smiled and gave me another smooch.

"Thanks", she said, "But before I do that, I gotta go get ready. Be right back". She quickly threw her uniform back on and started walking out of the room.

"Where you going?", I asked.

"I'm going to the mess hall", she said, "I wanna make sure your 'birthday present' is the best one you've ever had!" She left the room as I shrugged and rested my back against the bed, waiting for her to get back with enthusiasm.

Two hours later, I was reading a comic book when the sound of the door being unlocked was heard and Spitfire walked in again, walking very abnormally. She was groaning, and her stomach was bulging out a little bit. I could tell she had ben pigging out in the mess hall, and I'm surprised she was able to eat so much. Anyway, Spitfire flopped herself onto the bed, rubbing her engorged stomach.

"Get enough to eat?", I asked. Spitfire burped and farted simultaneously and spoke.

"Hell yeah I did...", she said, "I haven't eaten like that since last year's Thanksgiving..." She burped again and sighed. "I just hope I don't end up having to puke... because I want it all to exit my other end... if you know what I mean..."

"Oh yeah, I do", I said, resting my head on her chubby stomach, "By the way, what did you eat anyway?"

"Just everything in the staff-fridge", Spitfire said.

"Uh... don't the other leaders keep their personal food in there?", I asked, "That means you just ate food for over twenty ponies that's not yours".

"I know I know", Spitfire said, "But I left them I.O.U.s, and plus, it's payday tomorrow, so they should be happy about that, and not whine to me over a few piddly snacks". Spitfire wasn't joking there. She didn't tolerate whining at ALL, especially not from the cadets. If you whined to Spitfire about what position you were on the team, like being a wingpony, then you'd just be whining to her harder about why she barred you from the team. Basically, if you're older than eight, then she doesn't wanna hear it.

"Oh... right...", I said, shrugging, "So..." I nuzzled her stomach with an eager smile. "...can I have my gift now?" Spitfire gave a kinky smile as she slid her uniform off again, exposing her coat and diaper.

"Yep", she said, "Drop the comic book and roll onto your back". I smiled and did, my eyes glued to Spitfire's clean diaper. But, what she did next surprised me. She hopped onto the bed and walked backwards until her padded bottom was hovering just a few inches above my face. Then she started to sit, lowering her butt. Out of confusion and discomfort, I stopped her with my hooves, pressing into her diaper.

"Spits, what're you doing?", I asked. Spitfire giggled.

"I'm trying to give you your gift, silly", she said, "What else?"

"You mean you wanna sit on my face and do it?", I asked, "I-I thought you were g-gonna squat on the floor and go or something..."

"Where's the fun in that, Rain?", Spitfire asked, "You wouldn't get to enjoy it that much, because you'd just be watching me squat and grunt. So, I think you'll like it better if you can feel everything happening in my diaper on your face". I smiled a little, as that did sound great. "But, if you'd rather just watch me go, then it's your choice". I smiled wider and put my hooves down.

"Sit on me...", I said.

Spitfire gave another kinky smile as she spread her hind legs a little wider and raised her tail to the ceiling. After that, she very slowly lowered her padded bottom closer to my face, my heart racing from excitement. Soon, Spitfire was sitting on my face, her diaper comfortably touching it. Her butt smelled mostly like foal powder and diapers, but since she hadn't showered after seven hours of flying out in the Sun, I could smell a bit of musk through the padding, along with whatever traces of her farts were left. I cringed at the foul odor at first, but it instantly became tolerable as Spitfire sat.

"Ohhhhhhhh Celestia...", she said, carelessly spreading her hind legs and burying her hooves in the bed, "That feels sooooo good! So much better than a stupid toilet!" She looked back at me. "Can you breathe?"

"Mm-hmm", I said, muffled from the diaper. Spitfire smiled.

"You better get as much fresh air as you can", she said, "Because after this, it ain't gonna be so fresh". I chuckled and breathed the "fresh air" until I felt a burn in my lungs.

After that, I reached up and tapped the front of her diaper to let her know I was ready. I became excited as I felt Spitfire relax herself a little bit and the tips of her tail brush my forehead as it raised some more. I couldn't see anything, but I could definitely hear, feel, and smell, and I knew it was only a matter of time before that clean diaper was going to lose its cleanliness. Spitfire raised herself just a little and lightly rubbed her ass across my face, the diaper blissfully massaging my face up and down.

"Does that feel good to you?", Spitfire asked, "Because it feels great to me".

"Mm-hmm", I said.

"I'm just trying to get ready", she said, "I wanna go all at once, and not have to worry about readjusting my position".

"OK...", I said through the side of my mouth.

Spitfire continued to rub her diaper in my face for a a few seconds before she finally came to a halt. The sudden stop surprised me, because I was loving the rubbing, and became lost in it. But, Spitfire made up for it instantly. I felt more of Spitfire's body weight come down on my face as she relaxed a little more and sighed.

That's when I felt her diaper start to vibrate and become warmer. I could also hear a faint hissing noise, and a new musky smell welcomed itself into my nostrils. I squealed in joy as I knew exactly what was happening. Spitfire was peeing her diaper, and I was had a front-row-seat to it. Spitfire's piss was very warm, and felt wonderful as it soaked her diaper. The smell of urine was very strong, and almost impossible to ignore. I swear that Spitfire's pee could wake the dead with its smell, and that's why I always waited before going to the bathroom after her, no matter what number she went. But, I was strangely enjoying the smell, and I couldn't help myself as I blissfully sniffed it.

"Ohhhhh yeahhhhhh...", Spitfire muttered as she wet her diaper, "Sweet relieeeeeeffffff...!"

Spitfire relaxed a little more and spread her hind legs further. That's when I felt her stream become stronger, and the hissing noise increase. The smell became more enjoyable as she relaxed, and I could help myself as I seductively licked the bottom of her still-moistening diaper, giving it a small kiss as well. Soon, her stream began to slow, and it finally stopped after a minute and a half. Spitfire gave another loud sigh and shook a few more drops from herself into her wet diaper.

"Thank goodness!", she said, "That was the best pee of my life!" She giggled. "That's what happens when you drink four whole gallons of lemonade and a whole bottle of red wine".

"Damn!", I said through the corner of my mouth, "Were you trying to burst your bladder?!" Spitfire giggled.

"Yep", she said, "Just for you". I smiled and stifled a chuckle. "But... that's only part one of your present... and I didn't eat like a sloppy pig for nothing..."

Spitfire raised herself again, letting me get some more fresh for a few seconds. While I did, she scooted herself up a little bit and then sat back down, her tail raised as high as it could go. That's when the feeling and smells changed instantly. I felt the tip of my muzzle enveloped by Spitfire's anus, and could smell every molecule of it. I coughed on the very pungent odor, and it took all my strength to withstand it as it very slowly became tolerable. Sure, her pee smelled strong, but what came out the back was even stronger. I still don't know to this day why I can't stand it after the hundreds of Spitfire's farts I've inhaled since I've known her.

"Oh yeah!", she said, teasing me as she heard my disgusted cough, "Get a smell of that, and enjoy it! You'll only get a stench like that from my ass". Thankfully, the smell had become tolerable at that point, and I was able to breathe easier as she looked back at me. "You ready for the bombs to drop?" I smiled eagerly.

"Mm-hmm!", I said.

Spitfire smiled again as she raised herself just a little so she could be in a squat, but making sure to keep her diaper on my face. I then felt her body tighten up and her anus loosen around my muzzle as she started to grunt, trying to pass the several pounds of food she had. I felt the familiar tingle down below again, and something starting to harden as Spitfire tried to poop. But, I was totally caught off-guard when she farted loudly, her diaper vibrating from it. The rancid smell traveled instantly into my nostrils, and it had been at the same time I inhaled, so it went down my throat as well as I coughed, Spitfire giggling.

"That felt so good!", she said, rubbing her diaper on my face a few times, "I should eat like that more often!" She looked back at me again. "You better get used to those, because I haven't even gotten started yet!"

She wasn't lying about that. Right then, she grunted again, forcing out another loud fart into my face. I coughed on the smell again, and before I could even think about getting some fresh air, she farted again, making the smell worse. I was starting to call it quits, but suddenly, her farts were slowly losing lethality, and I was able to take them easier. After the seventh fart, the smell suddenly smelled wonderful to me. Her farts went from terrible, to wonderful in just thirty seconds, and I loved the smell as I pressed my lips against the diaper and inhaled every bit of her farts. Previously, her farts were unbearable, but I never thought smelling multiple ones would be wonderful.

Soon, her farts became shorter and quieter as something was blocking them. I felt something start to push against my lips, the smell became so much stronger, and Spitfire began to grunt louder and harder. My excitement increased as I knew exactly what was happening. I embraced myself for what was happening, eagerly waiting for her to poop her diaper. I kept kissing and licking her diaper as I eagerly waited for it to fill.

As seconds went by, I began to get impatient. I continued to feel the log push against my muzzle, but it would pull away as Spitfire was having trouble pooping. Of course, she did just finish food for twenty ponies, but my urges didn't care. I aggressively licked the diaper, wrapping my front legs around her waist and pressing her ass harder on my face, making her jump a little.

"H-hey, I'm trying OK?", she complained, "I had a stool-hardener after eating, so I gotta work for it".

She began pushing some more, relaxing to take a breath now and then. There was even a small fart once or twice as she continued to poop. I kept licking the diaper, pressing her harder and harder onto my face as I waited for her to poop. Soon, I felt the log poke at my muzzle again, and expected for it to pull away again, but it didn't. In fact, it pushed harder, and began to form a bulge in the diaper. I smiled very eagerly as it continued to move, and I heard Spitfire's grunting slowly soften.

"Hmmmm...! Hhhhaaaaaahhhh!!!!"

Spitfire gave a very loud and pleasured sigh as she finally pushed the log out into her diaper, spreading her legs a little more. I squealed in joy lightly as I felt the entire log across my face. The warm, bumpy, hardened, smelly poop felt so good, and I felt myself starting to throb below. Spitfire saw me start to unsheathe below as I enjoyed the treatment I was getting, giggling a little.

"I knew you liked mares filling diapers", she said, "But I didn't know you liked it THAT much..." I blushed furiously. Spitfire had never seen my penis unsheathed, not even my morning wood. But now, she was looking dead at it, and it was a little embarrassing as I reached down and covered it the best I could. Spitfire giggled again and pushed my hooves out of my way.

"Hey, you don't have to hide it", she said, "It's already out, and it's not like I'm gonna tell on you for being horny. Everypony does now and then". She then looked back at me with a horny smile.

"In fact...", she said, "...I'm a little horny myself, and... I might help you with that after I'm done pooing".

I felt my boner rise a little as Spitfire gave it a quick lick and went back to what she was doing. She put a little more weight on my face, purposely squishing the poo in her diaper on my face as she pushed out another log to add to the previous one. The smell became riper, and I loved it so much. She took a few breaths, and pushed out a third log. I felt that one move toward the front as the diaper felt bulgy on my chin.

I started to become lost in the feeling and smell as Spitfire continued to poo herself. I pushed her down on my face harder as I kissed her messy diaper again. Then, I gave it a small bite, loving the feeling of my teeth squishing the manure inside. Her diaper became more and more bulgy and smelly as several more turds filled it. Once or twice, Spitfire would bounce a little, purposely squishing her mess on my face. I could feel myself throbbing so hard below as my erection became so hard that it hurt, and I had to resist the urge to pleasure myself. As another log of poop entered the diaper, I became completely lost in the full diaper. I pushed Spitfire's dirty ass as hard as I could on my face and buried my face in her diaper, nuzzling, kissing, licking, and biting the diaper frequently. Soon, it all came to a stop. Spitfire gave one last hard and loud grunt, sharting out the last, and biggest, turd and sighing loud.

"That... felt... amazing!", she said, "I feel thirty pounds lighter!" She looked back at me and raised herself a little so I could talk. "Did you enjoy that?"

"Mm-hmm!", I said, smiling wide. She smiled.

"How do you like my farts now, hmm?", she asked, sitting again and letting out another fart.

"*sigh* I like 'em", I said.

"Well, I'm glad you do", she said, "Now you can stop complaining when I do it around you". She gave another horny smile. "But... I don't think we're done yet..."

"What do you mean?", I asked, "You pissed and shat your diaper on my face. That was my present, right?"

"Yeah...", she said, "But... last time I checked, that turned you on, and I shouldn't make you suffer with a boner, right?" My excitement jumped again.

"You mean... you wanna do it?!", I asked.

"Did I s-s-stutter?", Spitfire asked, stammering purposely, "I w-w-want you to f-f-fuck me. D-d-do you wanna?" I smiled and gave an eager nod as Spitfire rolled off the bed and landed on her hooves at the bed. I stood behind her, my face almost two inches away from her diaper. I sniffed it a little bit, loving the foul and pungent odors. I then kissed it and waited for her to take off the diaper so we could get started.

"Rain, could you go into my drawer and get my scissors?", she asked.

"Uh... why...?", I asked.

"You'll find out", she said, "Just get them". I shrugged and went into Spitfire's drawer on her nightstand, pulling out the silver mane-scissors she keeps in there.

"Here", I said, reaching them out to her. She just smiled and pushed them away.

"I don't need them", she said, "You do". I raised my eyebrow in confusion.

"For what?", I asked.

"Well, we just performed your kink", she said, "So, now we're gonna perform mine: anal". I made a face of disgust.

"You want me to put it in your ass, after you just took a shit?", I asked.

"Yep", she said, "Unless you want me to tell all the cadets about your kink?" I could tell she wasn't joking.

"OK...", I said, "...I'll do it..." Spitfire smiled.

"I know you will", Spitfire said.

"But, why do we need the scissors?", I asked, still holding the scissors in my hoof. Spitfire smiled wider.

"Well, I wanna make it awesome for me, and enjoyable for you", she said, "Since you love my poopy diaper so much, I want you to stick it in my ass through it. That way, you can feel everything in my diaper, and in my ass".

"So... you want me to cut a hole in it?", I asked.

"Bingo!", she said, playfully shaking her ass at me, "Right around my butthole!"

"But, what if something falls out and hits the floor?", I asked.

"Dude, the floor is made of clouds", Spitfire said, "If something does fall out, it's just gonna fall through it, and then it's not our problem. So I don't care". I shrugged and placed the scissors against the diaper, Spitfire stopping me right before I started.

"Pay attention to your cutting too", she said, "I swear to Celestia if you stab my ass or cut my tail off, I'm gonna kick you so hard in your balls that you aren't gonna feel anything down there for a month".

I nodded approvingly as I focused really hard on what I was doing. I cut a big hole out of Spitfire's messy diaper and peeled it off, exposing her dirty anus. Her manure was caked all over her ass, and it looked like a tar-pit as several pieces of undigested hay and corn were seen in the several pounds of poo. Sure enough, two big logs fell out of the diaper, but like Spitfire said, they fell through the floor, and I hoped they would hit the land below without hitting somepony.

"Oh gosh!", Spitfire said, fanning her muzzle with her hoof, "It stinks something fierce in here now. Probably shouldn't have opened my diaper".

"Too late", I said, showing her the filthy piece of diaper I had cut out, "I cut it". I tugged on her tail. "And I didn't cut your tail either". Spitfire giggled.

"Great", she said, "Well, are we just gonna let my hole air out, or are we gonna bone?" I smiled and mounted Spitfire horsey-style, my erection buried in her raised tail. I felt so much excitement run through my body as I grabbed my dick with my hoof and moved it to be level with Spitfire's anus. Once it was, I lightly touched it with the tip, Spitfire moaning a little and looking back at me.

"Do it slow... very slow...", she said.

I nodded as Spitfire faced the front again. Doing what she said, I slowly began to slide it into her dirty anus. At first, I thought it would feel awkward and gross, but my mind was instantly changed. Spitfire's poop was like a very warm lube enveloping my cock as I slid it further and further into her. It began to get a bit difficult, because her asshole became tighter as I slid into it, but thanks to the manure, I managed to get it all the way in until my balls were touching her diaper. Spitfire moaned really loud and began to shake from pleasure.

"Oh Rain!", she said, "I didn't know you were so big!" I smiled with flattery.

"And I didn't know you were so tight!", I said, giving her cutie mark a loud smack. Spitfire yelped.

"Oh yeah!", she said, "Do it again! Fuck me while you do it!"

I smiled and smacked her flank again, while at the same time thrusting my shit-covered penis in and out of her asshole. Several moans and whimpers came from my horny marefriend as I fucked her ass, spanking her flanks as I did. I was really enjoying the anal I was giving her, and I didn't care that Spitfire's hole was chock-full of shit. In fact, I loved that it was. The smell of the poop filled the room, and I was glad there was no space under the door, or everyone with a room on that hallway would've definitely smelled it.

"Yes! Yes! Yes!", Spitfire yelled between moans, "That feels so fucking good!" She looked back at me. "Please don't stop! Harder! Faster!" I smiled with more excitement as I heard Spitfire beg for me to stop. After a few seconds, she accidentally slipped a loud fart. The feeling of her ass vibrating around my dick felt so good.

"Oh yeah!", I yelled with pleasure, "Spits! Keep farting! I love it!".

Spitfire giggled and purposely pushed out more and more farts as I continued to spank and thrust her ass. A mixture of loud farts, moans, whimpers, yells, and a few neighs filled the air as we couldn't care less what was happening around us. Soon, I felt something start to build up as I was close to having an orgasm.

"Spits, I'm about to cum!", I said, panting hard, "Should I... pull it out...?"

"No!", Spitfire said, "Spill your seed in my ass! Please!"

I clenched my teeth hard as thrusted onto Spitfire's anus one last time, screaming in pleasure as I came, shooting several large loads of semen into her poopy ass. Spitfire screamed as well as she too succumbed to an orgasm, adding loads of mare-cum to her diaper, some pouring out through the hole and landing on the floor. Spitfire and I both collapsed on the floor as or orgasms subsided. I pulled my dick out of her ass, seeing that is was covered in two layers of Spitfire's poo, looking like a chocolate éclair. I tried not to touch it and spooned my marefriend's back.

"Spitfire...", I said, nuzzling her cheek, "That was... so amazing!"

"You're not kidding, Rain", Spitfire said, "*sigh* I've never been so horny in my life..."

"Me neither...", I said, "And who knew a bunch of piss and shit crammed into a diaper was so arousing...?" Spitfire smirked.

"Yeah...", she said, "I take it you enjoyed your present?"

"Hell yeah I did!", I said, "Thanks!"

"No problem, Rain", Spitfire said, "Now, let me get out of this nasty diaper before I get a rash".

Spitfire stood up and changed herself out of the messy diaper while I used the water from the clouds to rinse the poop off of my cock. After it was clean, I watched Spitfire slide the messy diaper off her herself with a plop, wipe herself, powder her butt, and tape up a new diaper around her waist. She then wrapped the messy diaper up and placed it in a plastic bag to mask the stench, trying it afterwards. I expected her to toss it in the wastebasket next to the bed, but she instead placed it in her nightstand drawer, along with the scissors. I raised my eyebrow as she closed it back.

"There we go", she said, patting her new diaper, "Clean and pleasant smelling".

"Why didn't you throw away the dirty diaper?", I curiously asked.

"Because I wanna save it for the next time we do it", Spitfire said, "That way, I can make the diaper bigger and smellier each time. Plus, after all the work it took me to fill that thing to beachball-size, I'm not gonna waste it".

"If you say so...", I said, jumping back in bed, "It's your poo". Spitfire giggled and joined me in bed, happily snuggling into my coat as we completely buried out bodies inside the comforter.

"So... remember when I told you that you'll get paid whenever I think you're ready to be a real Wonderbolt?", she said as I nodded, "Well, I think you've proved your worthiness more than enough". I smiled.

"Are you saying what I think you're saying?", I asked.

"If you think I'm saying I'm letting you be the newest cadet, then no", Spitfire said.

"Oh...", I said, feeling a bit dejected as I had gotten my hopes up.

"Because you're too good to be a cadet", Spitfire continued, "That's why, I'm proud to welcome you to the Wonderbolts, as Co-Captain". I jumped in a bit of excitement.

"Co-Captain?!", I asked eagerly, "B-but, Soarin's the Co-Captain".

"No he's not", Spitfire said, "He told me earlier today that he's quitting tomorrow because he wants to pursue his dream of joining the Equestrian Army, and I need a replacement, so I choose you. That is, unless you reject and would rather become a cadet instead". I smiled and nuzzled Spitfire's cheek.

"I'd be happy to be the Co-Captain of this team, Spits!", I said, "Oh mare... this is the best birthday ever! First I get to watch you poop yourself, then I get to fuck you, and now I'm the Co-Captain of a team I've been an intern for!" Spitfire giggled and snuggled deeper.

"Well, I'm happy that you enjoyed it", she said, "I sure did!" I turned off the lamps and cuddled Spitfire as my head rested on the pillow, as did Spitfire's.

"And I'm glad you enjoyed it too", I said, giving her a quick smooch, "Goodnight Spits".

"Goodnight Rain", Spitfire said as we both slowly drifed off to sleep.