Atop the lofty clouds, two pegasus lay on the pearly white clouds.  The small orange filly giggles into the billowy mess as the older blue mare is snout deep into the child's wings.  Rainbow Dash methodically navigates through the tiny feathery wing, taking care not to pull too hard on the delicate limb.  Scootaloo can't help but stifle a laugh as her role model nips at the stubby wing, taking note of how Dash preens her budding appendage.  The prism-colored pony raises her head, wiping her mouth with the side of her foreleg as Scootaloo exhales in relief from the tickling sensations.  Dash takes a hoof and messes with her little student's purple mane as they both lay on the sizable cloud, enjoying each other's company.
 
        “Hope you got what I was doing, as the best flier in Equestria, I don't show everypony my secrets to wing cleaning.”  The little filly nods her head excitedly as she inspects her own wing, memorizing the sensations.  As Rainbow lays on her back, she smacks her lips, washing the aftertaste of feathers from her mouth.  Oddly enough, the taste of bare pony skin rolled around her tastebuds, the salty sweetness of the naked wing made her mouth water.  Skipping breakfast and lunch didn't help quell her grumpy belly as it protests with a loud grumble.  Sampling the remaining flavor from her lips, Rainbow knew that this taste was very different from her own, and she craved for more.  The need to satisfy her appetite overwhelmed her senses as an idea brightens her mood.  A personal encounter with Pinkie and her ravenous appetite was to thank for this plan.
 
        “Hey squirt... want a real special preening session with yours truly?  Close your eyes...”  She gives a devious grin as Scootaloo obeys without a peep.  The sky blue pegasus delicately massages her lower jaw, preparing for the large meal.  She snaps her head forward, consuming the filly's head in a blink of an eye.  Scootaloo yelps in surprise as her back legs kick out in a panic.  Not wanting to risk her escaping, Dash thrusts her head forward, forcing more of the orange pony into her mouth as her teeth graze the soft underbelly of the youthful equine.  Saliva pools at the bottom of the peckish pony's mouth as the tiny pony kicks  in resistance, splashing the oral fluids all over her coat.  The tongue snakes all over the small form, parting the coat hairs to sample the oily skin of the budding pegasus.  Resisting the urge to laugh, Scootaloo lurches forward as a huge gulp drags her vision into the darkness of the esophagus of her mentor.
 
        Rainbow slurps up the remaining purple tail that stuck out from between her lips, stroking the squirming mass in her throat.  A satisfied grin crosses her face as Scootaloo weakly strikes at the muscular walls that constricted around her, forcing the small pegasus into the acrid chamber that awaited her entry.  The entrance stretches wide as Dash swallows down more saliva and air to push the hesitant pony into the fleshy sack.  She holds her breath as she focuses on dumping the helpless pony into her stomach, the struggles proving much more successful that Dash would like to admit.  Taking both fore hooves, she presses down on the lumpy bulge as the muffled squeaking sounds increased in frequency, desperate to come back up.  Finally, Rainbow feels something give way as the heavy weight suddenly drops into her belly, the cloud below her cushioning the abrupt fall.  
 
        “Rainbow Dash, what is this!?”  The fledgling flier shouts into the pulsing skin.  A slimy, thick substance crawls all over her body, the smell none too pleasant either.  Any attempts to stand in the claustrophobic organ was met with a strong squeeze, the churning stomach unfamiliar with the live meal.  It growls questionably as it presses harder on Scootaloo, unable to get a moment's rest.  Every movement of resistance was met with a stronger elastic shove, the slippery lining making it harder for Scootaloo to reposition herself.  With no hope of escape, the worn pony sinks into the wrinkled flesh as it pulses around her, the quick throb of Dash's heart her only lullaby in the orchestra of organic noises of the digestive tract.
 
        “Don't worry about it Scoots, just relax and enjoy the ride!”  Rainbow Dash strokes the writhing body beneath her skin, trying to ease the young pegasus' worries.  While the taste of Scootaloo lingered in her mouth as a pleasant flavor, the feeling of a struggling pony within her threw Dash into a state of sheer bliss.  The soft thumps inside her belly massaged her in ways she never knew possible, kneading her sore muscles from her stressful practice.  She pushes the little pony around the pliant sphere of her middle, taking in the rhythmic jabs of her prisoner.  A mixture of pleasure and dominance over the orange filly gave Dash a thrill that nothing else has given her.  Feeling the movement from the small pony die down, Rainbow rubs her belly with a more tender pressure, circling her hoof around the lumpy form.  
 
        “I'm gonna take a short nap, don't have too much fun in there.”  The blue mare's voice thunders around Scootaloo as she hears the heart slow down in frequency.  Covered in all manners of bodily fluids, a muscular exit from the stomach opens up below her.  The stomach, more than happy to encourage the filly to escape, contracts hard on her body, dumping all of its contents into the small intestine.  Scootaloo disgustedly spits out the invasive liquid as her mouth drags across the greasy tubes, the sour taste not to her liking.  The organ above continues to pump the rest of the filly into the cramped confines, her hind legs following soon after.  The sphincter closes around her tail as the intestines coax her forward.  She grumbles frustratingly, the living walls squirting all manners of goopy substances on her body.  Scootaloo kicks forward against the tight entrance, craving release from this awkward game of tug-of-war.  A third kick is all it took for freedom into the winding depths, her tail following closely behind her.
 
        Bracing herself for what lies ahead, Scootaloo slowly creeps forward into the linear maze of Dash's lower body.  Though she expected the worse, the intestines gently stroked her along in her journey through.  The villi lining stroked her entire body, brushing away the odorous fluids that coated every inch of her being.  The tender touches of the little tentacles were welcome from the violent throttling the stomach provided.  Scootaloo even giggled light-heartedly as she pressed her soft underbelly against the tiny suckers, cleansing her body of any greasy residues that made their home on her coat and skin.  Her tiny wings benefited the most from this, the villi finding their way into every corner and crevasse of her feathery limb.  The cushioned walls rippled around her, adding to the delightful feeling of being cradled and cleaned by her spiritual sister.  She leaves behind the troubles of the stomach as she snuggles into the malleable warmth.
 
        The large pegasus yawns as the sun sets in the distance.  Scratching a curious itch on her plump belly, she is reminded of her passenger.  She gives a quick smirk and a slap to the bumpy bulge sitting between her rear legs, the familiar pressure of nature calling pressing against her tiny puckered hole.  Lifting herself off the cloud, she takes flight to her home, where she will relieve herself in private.  Keeping her hind cheeks close together, she ensures that no amount of struggling will escape her powerful rear, carrying the filly inside the safety of her colon.
 
        Standing in the entrance of her bathroom, she gives the door a kick as it slams shut.  Pausing briefly for dramatic effect, Dash trots over to her tub, turning on the warm water.  Using the white noise to drown out all distractions, she sits on the lip of the elevated shower, anus pointed towards the clear, rushing water.  Spreading her cheeks far apart, she puts her privates on full display to the water, her muscular exit swollen from carrying a heavy package.  She shudders out a moan as the sphincter yawns open, followed by the sounds of the lubricated cavern stretching wide.  With a long, prolonged grunt, the rainbow mare tightens every muscle in her body, as a bright orange snout slowly makes its appearance between her legs.  Dash's body twitches in pain as the snout leads to the large, bulbous head, stretching her tight exit to its limit.  The filly groans in unison as the exhausting trip comes to an end, weakly wiggling her way out of the oily container.  Dash resists the urge to draw the tiny body back into her, the movement providing more pleasure to her than help.  Using her willpower, she braces herself as she ejects Scootaloo from her body in one fell swoop, ending the quick eviction with a long, sputtering fart.  Dash breathes heavily as her little student slides into the bath water, the filly immersing herself into the warm, clean fluids.
 
        “Heh... so hope that was everything you'd thought it would be, I certainly did.”  With false confidence, she laughs off a potentially traumatic experience for Scootaloo.  Dash's personal encounter with Pinkie Pie certainly wasn't the most pleasant thing she could think of, but it certainly was a new experience.  Beyond that confident facade, Rainbow secretly hoped that Scootaloo didn't have a terrible time inside her.
 
        “It sure was Rainbow Dash, can we do it again sometime?”  The orange pony's tired eyes light up with enthusiasm as the older pony looks at her confused.  Dash immediately shakes all doubt from her mind and returns the youthful spirit with her own.
 
        “Of course!  What's a big sister for?”