>You cross the finish line a good ways behind Rainbow Dash.
>Of course you knew you were going to lose the moment she suggested your daily run be more competitive than casual.
>But either way you needed to work out.
“Haha! How’s it feel to come in second again Anon?”
>You look down at the little four-hooved rainbow with indignance.
>”To be honest it feels like a typical day for me.”
She smacks your hip, “Hahaha! Come on lets cool off in the park.”
>You follow her over to a nice shady spot under a tree. 
>The weather was partly cloudy and a cool breeze traveled across the rolling hills to chill your sweaty bodies.
>You plop down on the grass next to her and lean back with your hands behind your head. What a perfect day.
>You close your eyes and start to drift off to the sounds of ponies milling around in the park. Somewhere off in the distance some colts and fillies were playing a game of hide and seek.
>Deeper and deeper you drift until…
*Ngh
>A quiet grunt escapes your friend’s throat and you hear her shift.
>Soon she settles down again and starts scratching at something.
>Whatever she’s scratching at seems to be giving her some trouble because she keeps at it amidst a string of strained grunts.
>Out of curiosity you open your eyes and peek over at her.
>The athlete is on her back as you were with her legs spread wide open. Her fore hoof is rubbing vigorously at her dark blue sheath nub below her bellybutton.
>”Dash you good?”
“Y-yeah just getting at an itch! It gets bad when I sweat too much.”
>She was clearly having some trouble with her hooves.
>”Need some help?”
>She looks over at you with a bit of surprise.
“Uhh, yeah sure, it’s on the inside so your fingers would work better.”
>You immediately reposition. You’d never told her, but you had a slight obsession with her musk. The fact that equines freely shared their bodies out of displays of trust and friendship only made it easier to get your fix.
>She moves to sit back against the tree and spread her hind legs for you. Below her warm and loose-hanging testes rested a very visible cleft. 
>You start to get excited and make no effort to conceal yourself from her.
>She looks down with some concentration and spreads her sheath—peeling the loose sock of sticky skin back far enough to reveal her mucous-slick sex organ.
>The pink cock-head glistens in stark contrast with the rest of her leathery-blue geography. She smirks up at you,
“It’s bigger than it looks ya know!” She boasts.
>”I’m sure it is Dash.”
>Suddenly the wind picks up and chills the exposed cluster of nerves in her crotch. Dash flinches and quickly squeezes her sheath closed again to protect her penis.
“Uhh…hehe, it’s kinda sensitive so be careful.”
>”I will don’t worry. Fingers are softer than hooves anyways.”
>Finally she relaxes back and exposes herself to you.
>You take that as your queue to find her itch.
>Your hand starts kneading the hot fleshy hump and she instantly grunts and pushes into you.
>The sweat that thoroughly covered her body lubricates your palm but makes the necessary friction all the more difficult.
>Sensing desperation, you move a finger up and over to press into the mare’s sheath.
>The temperature almost doubles as you sing your digit into her musk pocket.
>Just before you get down to the knuckle you bottom out against her slick, spongey cock-head.
“Ag—gahhh…”
>You circle the sweaty hole and scratch at everything you possibly can, all the while enjoying her satisfied grunts and smile.
>”Does it get like this often?”
“Nah—ah! Oh yeah right there!…It’s only when it gets a bit dirty.”
>She leans her head back against the tree with a gaping mouth and enjoys your ministrations.
>You focus your itching finger on a particularly sweet spot in the back of her sheath. You have to wiggle it deeper under the crown of her spongy cock to completely route the pesky itch.
>Once you’ve relieved everything you trace her smooth glans for fun until you settle on the tiny siphon of a urethra.
>”Hmm…Do you wipe after you pee?” You ask to troubleshoot her recurring problem.
She looks you in the eye, “No, but it doesn’t get dirty from that. It sorta pops out a bit when I have to pee and then shrinks again when I’m done.”
>Oh that’s kinda neat.
>”Really? Well what about after you masturbate?”
>The question doesn’t even make her blush.
>Your dextrous fingers stretch her sheath open so you can inspect the flushed cock nub and surrounding flesh.
“Uhh…I usually just jack it before my nap so yeah…don’t really have any tissues to wipe with.”
>You bring your nose down to the opening and sniff.
>The scent of fermented mare musk and bleachy cum clouds your sinuses.
>Dear Celestia it’s strong.
>”You know a few minutes after you cum your body flushes out the extra with a bit of pre. If you’re already retreated by then then it’ll leak out into your sheath.”
>You dig around with your finger and wipe out some pearly-yellow semi-hard lumps of day old semen.
“D-duh! I knew that!”
>She looks indignant but it was clearly new info for her.
>Despite herself she looks down with interest as your nimble fingers clean her out.
>”All I’m saying is just get in the habit of wiping off and you won’t get itchy when your cum dries.”
>You hold up your finger in front of her face so she can see the cum lumps stuck to it.
>She inspects it with genuine interest before you wipe it off in the grass.
>Her musk now overpowers everything else in the vicinity. But as dirty as she was, it wasn’t bad.
>Far from an unhealthy or diseased smell…the fleshy pocket still had its all natural appeal—it just had a lot more than average.
“Hey! Careful with that!”
>She twitches as your finger slips under her retreated corona and wipes out any sheath-jam.
>After you’re finished you wipe off and close up her sheath for her.
>”There, all set.” You pat the hump affectionately, “Feel better?”
Dash moves her legs every which way to see if it caused any irritation, “Thanks dude that’s a lot better! I might have to schedule cleaning appointments with you like at the dentist hahaha!”
>”Well they say prevention is the best medicine.”
“Yeah…I uhh…I hate to ask, but can you wait until I jack off to make sure I put it back right?”
>”Uhh…I guess. I mean you could just make sure you…”
>Dash didn’t even wait for your permission to begin coaxing herself to full mast.
>In the span of a few seconds her naked pink cock snakes out and bobs erect…all twelve inches of it.
>”Uhh…dang you weren’t lying about being bigger.”
“Heheh! Hang on this’ll just take a sec.”
>She starts stroking herself and you can’t help but feel a response of your own.
>After a brief moment of contemplation you strip out of your pants and boxers and bring your own member to play.
>She looks over in surprise.
“Heh, what am I too much for ya?”
>”Honestly I could use a nut too. Besides, I never got you a birthday present.”
“Huh? My birthday was like three months ago—aaah!”
>You promptly pull her hard rod from her grasp and lick its length.
“Goooah!”
>Some heads turn your way but loose interest after a brief glance. Other stares linger a bit longer.
>You start furiously jacking off while licking Dash’s salty length.
>She relaxes into the grass and lets you freely tend to her as you see fit. The first thing you do is swallow her fat glans.
>The second thing you do is cup and fondle her smooth lemon sized nuts.
>She accepts your advances without reservation and focuses on her own pleasure by bucking forcefully into your mouth.
“Gah! I’m aaaagh!”
>After no longer than thirty seconds she swells promptly before ejaculating into the back of your throat.
>The unexpected force of her hot cum makes you cough and sputter and loose grip—forcing the rest of her semen to paint your cheek and shoot over your shoulder.
>You wipe the sizable glob of semen off your cheek and use it as lube to finish masturbating while still stroking her wet cock for your own satisfaction. With one hand still on her shrinking cock, she watches as you finish in no time and shoot off into the grass between you.
>Immediately after you finish she puts her muzzle in your crotch and licks your member and hand free of your cum.
>As you catch your breath you take a look around to see a mare on a nearby park bench hoofing herself and staring at you.
>Turning your attention back to Dash you see her swallow the last bit of your essence and a dopey grin crosses her face. The ritual was customary among friends. Good friends clean up the messes they make, and she apparently knew she contributed enough to your pleasure to consider your mess her responsibility.
>You bend down and lick her head clean as well.
>”Well that was faster than I expected.”
>She grins.
“You’re one to talk!”
>You wipe the rest off your cheek and bring it to your mouth.
“Thanks for the lick by the way. It felt pretty good.”
>”No problem Dash, like I said, sorry for the late birthday present.”
“Heheh, no worries.”
>”So you don’t clean up, you just let it shrink?”
“Well I usually wipe off where it spills but it shrinks really quick.”
>Just as she says, the pink snake starts to get smaller and smaller.
>”Ok so before it disappears do this.”
>You grab her cock at its base and put pressure on the outside of her urethra with your thumb. In one swift motion you run it up to the tip and expel the semen that was still in her tube.
>She twitches and furrows her brow at the teaspoon full of mare juice that squeezes out of her tip.
>You slurp it away and finish by cleaning the rest of her smelly shaft with your tongue.
>Despite the sensations she still shrinks and eventually disappears back into her cock pocket completely.
>”Just gotta get that last bit out otherwise it’ll come out in your sheath again.”
“Heheh, I think you might actually like my cock.”
>”Well…maybe.”
>You duck back and kiss her sheath opening before plunging your tongue into it.
“Hahahaha! It tickles!”
>She writhes and bucks while you lick her musk pocket clean of anything that could cause her discomfort in the future.
>The move proves to pay off when you taste the last bit of watery cum leak from her retreated sex.
>You pull off with a pop and give her genitals an affectionate pat.
>“Now there shouldn’t be any excuses for—“
“—Aaaaaagh!”
>Your attention turns to the mare on the park bench just as she cries and lets her load loose on the side walk.
“You were saying?”
>”Yeah, um, so about those cleaning appointments…”