Darkness covered Equestria like a blanket as the clock ticked away at the early hour. In the small, cozy town of Ponyville, all the little ponies were still snug in their beds. One stallion, however, was pacing around near the foot of his bed. You were too nervous to sleep, wings constantly shuffling and hooves shaky as your big day was soon upon you. You checked the time again, groaning as five minutes had barely passed since you had last peeked at your clock.

	The sun had barely crested over the horizon, yet you were already out the front door. You didn't waste any time as you zoomed towards your new job. It had taken months of training and several entrance exams but you finally achieved your dream. You flew up past the clouds and towards the offices of the weather team for Ponyville.

	You reached out a hoof and pushed at the front door. It refused to budge either direction, leaving you sitting outside. “Oops...I'm early.” You chuckled as you sat down in the clouds. With nothing to do, you relaxed against the building and watched the sun rise into the sky. The calm atmosphere soothed tense muscles, causing your eyes to droop.

	“Rookie? Hey, new guy!” A shrill voice screamed in your ear and caused you to jolt upright. You looked towards the door to see the captain of the weather crew shook her head. Her rainbow mane shook in the wind as she unlocked the door. “Jeez, there's always somepony like this on their first day.” She pushed the door open and beckoned with her hoof.

	The rainbow maned mare took charge as you walked through the empty halls of the weather office. Your hoof steps echoed through the hallway as the mare led the way. “So, first day? I guess it's kind of exciting. You get to work with me, after all.” Your eyes stopped wandering the halls and looked forward to see the mare smirking at you.

	“Oh yea...you're Rainbow Dash, right? The mare that's a shoe in for the wonderbolts.” Rainbow Dash's grin's smirk widened as she turned to face you. “Yup! That's me alright. Faster flier and cloud buster in Equestria. You should consider it an honor to be personally trained by me.” Rainbow Dash giggled as she continued down the halls towards a meeting room.

	“You're early...like, REALLY early. I'm only here to get all the boring paperwork done for you  new recruits. There's some doughnuts and coffee in the back so help yourself to breakfast.” She giggled as you darted to the white boxes and grabbed something for yourself. “Can't have you falling asleep during the lecture today or in the sky, after all.”

	You blushed as you crammed a doughnut into your mouth while pouring yourself some coffee. “I'll try to keep myself awake, I promise.” Rainbow Dash left the room, leaving you to sit all by yourself. You stared at the posters and motivational banners on the walls as you ate breakfast, giggling as you saw Rainbow Dash's face on every one.

	The clock echoed in your ears as time slowed to a crawl. Rereading the same poster served little entertainment and your eyelids were growing heavy once more. You decided to rest your eyes again and placed your head on the desk in front of you. Perhaps a nap wouldn't be so bad.

	“Okay, recruits. Are you ready for your first briefing for official training?” Rainbow Dash's voice called out through the training room. Your eyes shot open as the fellow rookies called out in delight. “Oh, looks like our sleepyhead is awake. Thanks for that, cadets.” You blushed as a flurry of giggles echoed through the room as Rainbow Dash began to lecture.

	“Today, you'll be shadowing a few different members of the weather team as we detail your jobs and tasks around Ponyville.” Rainbow Dash explained as she gripped a piece of chalk with her wings. “We've set up a few areas where we'll be explaining cloud busting in detail, controlling precipitation and the various sky sectors where we direct the weather.”

	While everypony watched the blackboard, you found yourself distracted by Rainbow Dash. Every movement she made while leaning against the blackboard jiggled her plump rear, making it difficult to pay attention to the board. The sexy sway of her hips and little flicks of her tail made you blush white hot as an involuntary shudder rocked your spine.

	“Okay, any questions?” Rainbow Dash asked. She turned to look upon the class and the spell was broken, leaving you wondering what was said. You darted your eyes around the room and coughed as the room stayed silent. “Cool. Come find your name on these sheets and they'll have your schedule for the day. See you guys later!”

	Rainbow Dash bolted out of the room in a flash. You scrambled up and found your schedule in the pile of sheets. You were scheduled for quadrant explanation first with Thunderlane, followed by precipitation control from Derpy Hooves and cloud busting would be last with Rainbow Dash. You were a bit sad that your time with Rainbow Dash was going to be last, but at least you'd get to see her soon.

	You followed several ponies out to the furthest reaches of the town and found a stallion with a mohawk and dark coat waiting you. “Hey there, cadets. I'm Thunderlane and I've got the great job of explaining the skies of Ponyville to you guys.” Everypony groaned as Thunderlane shrugged. “I know, most of you know this stuff already but we have to make sure you're prepared. You're on a payroll for this and one blunder makes us all look bad.”

	Lecture after lecture dragged on, leaving you bored and restless. All you wanted was the get back to watching Rainbow Dash and her perfect ass. Derpy's lesson was fairly short after she ended up shocking herself with lightning bolts repeatedly. The goofy mare waved you all goodbye as she struggled to tame her smoking mane.

	Finally, it was time for your lesson with Rainbow Dash. You watched attently as she darted through the sky and bucked away dozens of clouds in speeds no pony could ever hope to match. Her rear wobbled with every buck, leaving you struggling to keep airborne with tense wings and a near painful erection. You hoped nopony noticed as Rainbow Dash sent everypony back to the weather office.

	“Final thing is locker assignments. Everypony gets access to a personal locker to keep things like valuables and notes handy. I want you all to check your lockers, inspect them for anything gross or broken and report back to me. After that, you can go home.” Most of the recruits were gone in minutes, leaving you and Rainbow Dash alone in the locker room. You gave your locker one last check and slammed it shut. “Gotta find Dash and go home for the day.”

	As you made your way through the locker room, a worried moan came from somewhere near the back. You wandered through the maze of lockers until the moaning was extremely close. Rainbow Dash was sitting in front of a mirror, wiggling her flank for a bit before stepping on a small scale. “Dang it...when did I become such a fatty?”

	You watched in fascination as her flanks and rear jiggling beautifully, nice and plump like a sexy goddess. Rainbow Dash let out another sunken sigh and turned from the mirror. Your eyes locked for a moment that seemed to last a lifetime as a blush crept along Rainbow Dash's face. “H-Hey! Just what do you think you're doing!?”

	“Spying on me? It's not really a good thing to reveal to your boss that you're a huge pervert. Close your wings already before someone else spots you.” You struggled to snap your wings to your sides as Rainbow Dash stomped up to you. “I've been watching you since cloud busting today. You've been WATCHING me.”

	“No, no! I dunno what you're talking about.” Rainbow Dash growled as she sat down. “Liar. You've been looking at my fat ass all day today, haven't you? Probably wondering why the captain of the weather team is such a loser.” You tilted your head in confusion and shrugged. “Actually, your butt is pretty amazing. How in the world do you keep so slim but have such a sexy rear?”

	“Sexy? It's not sexy at all! Pegasai are supposed to be slender and fit to soar through the skies. Big...butts are for Earth pony mares...” Rainbow Dash looked away as she rubbed one of her cutie marks. “No matter what I do, my butt never slims down. Someone important on the weather team is gonna notice and then rumors are gonna spread...I can't have that!”

	“I can prove to you that it's not a problem.” You smirked as you approached Rainbow Dash. “Oh yea? What makes you think I'll believe what you have to say?” You said nothing as you reached your hooves out and slowly rubbed her thighs, causing Rainbow Dash to blush. “What are you doing? Stop it. Stop being weird!” Rainbow Dash leaned backwards to try and evade your touch but she only succeeded in landing on her back.

	“Perfect.” You chuckled as you leaned over her. Her wings slowly stretched out as you licked your lips and flipped Rainbow Dash onto her tummy. “What are you doing? Hey HEY!” Rainbow Dash shouted as you lifted up her tail and buried your muzzle between her butt cheeks. The scent of sweat immediately filled your nose as you took a big sniff of her crack. “....Dude...what?” Rainbow Dash was at a loss for words as you continued to breathe in her musk.

	Her whole body tensed up as she felt your tongue wriggle against her skin. “Gah!” Rainbow Dash shouted as you pressed your tongue against her ponut. “You...little....perv!” Rainbow Dash moaned as you swirled your tongue and lapped at her ring. Her nostrils flared as her breathing increased, a slight hiss escaping through her teeth as you began to part her tight ponut with a firm thrust of your tongue.

	“This is soooooo weird!” Rainbow Dash moaned as you explored her anus, savoring the sweat and sensation while her ponut flexed against your tongue. Satisfied, you pulled your tongue back and gave her pucker a kiss before inching yourself forward. “Done already? Can I get up...now?” Rainbow Dash gulped as she turned around and saw your throbbing erection.

	You slapped your cock down and spread her cheeks, letting your member settle between her soft, plump buns. “W-wait! I've never done anal before. You can't just...” Rainbow Dash shuddered as you squished her ass against your cock and thrust between her cheeks. Your tip pressed against her dock as you pushed forward, leaving a dab of pre-cum smeared on the top of her rear.

	The wet slap of meaty, jiggly flesh filled the locker room as you humped Rainbow Dash's rear, the fat bottomed mare in awe at how vigorous you pounded away at her rump. Slowly, her hips rocked back and forth to your rhythm, her cheeks working your cock as you continued to pump your erection against her. You grunted as a healthy spray of cum launched onto her rear, leaking over her cheeks and sliding down into her cleavage,

	Rainbow Dash was panting as she got up from the floor. A small glint of cum was leaking down her legs as she turned to face you. Her hoof reached out and smacked you hard on the jaw, sending you reeling back into the lockers. “Dude...NOT COOL.” Rainbow Dash huffed as she awkwardly shuffled to the showers. She looked back at you, revealing a blush lingering on her face. “....Was it at least good? I mean...I've NEVER heard of anypony doing THAT before.”

	She smirked as she walked into the shower room, swaying her hips a little bolder as she wandered off to a stall. “You better clean up too, rookie. Someone catches you with cum all over yourself, I'm not explaining why and you'll get kicked off the weather team.” You hurried up and washed yourself from top to bottom. Rainbow Dash was already gone by the time you finished, but a note had been stuck to your locker.

	“One of the weirdest things to happen on the job...but not horrible. Next time, ASK if you wanna have some fun with my “sexy” rear, rookie.” You bit your lip as you left the weather office and headed home. Something told you that you weren't going to get any sleep tonight, either.