x by Affective 

https://desuarchive.org/mlp/thread/20698725/#q20716870
https://poneb.in/u/affective

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I'm going to post the half finished story I did for a prompt that was given to me ages ago.
The prompt was that AJ and Dash were competing in an iron pony competition with Anon judging, and they try to use their feminine wiles to get Anon to favour them, which doesn't work out the way they planned. 

>Heaving a tired sigh, you lean your head on your hand and watch the two ponies you've been refereeing all day as they wrestle in the dirt at a remote patch of Sweet Apple Acres
>Applejack and Rainbow Dash have these competitions sometimes when tension builds up and they feel like they need to prove themselves
>They call it "Iron Pony," which sounds adorable no matter how much they try to sell you on how tough it is
>Unfortunately you're a sucker for those sad, pleading pony eyes, so you always get roped into the judge/referee role for these little spats of theirs
>Ever since they realised how your stubborn nature refuses to let you be anything less than an impartial judge even when it would be easier to just hand wave it, they always pick on you for the job
>So now you're stuck here for the umpteenth time watching the same song and dance, all for a bit of ego stroking for the winner
>A loud grunt and a heavy thud signals the end of the wrestling and the whole little event
>Applejack trots over confidently and brushes the dirt out of her mane
>"Well? That win's gotta put me back on top, right?"
>Dash flies up after her, looking rather dishevelled but still cocky
>"No way you could catch up to me, AJ."
>You consult your notes once, then again to make sure you're right about what you're seeing
>Well this is a new one
>Smirking, you look over at each of them
"Actually..."
>Pausing for dramatic effect, you have to hold back a laugh when they both lean in eagerly
"You tied."
>The impact of your words hits them like a ton of bricks and they both stand there with their mouths hanging open in shock
>"WHAT?!" they shout in unison
>Dash flies up and makes a grab for your notepad
>"That can't be right, Ano- OW! Hey!"
>Her hooves dart up to cover her snout after you whack her with the pad
>Pocketing it, you give her a stern glare
"You know I hate it when you do that, Dash. And you know I always keep track. You. Tied. Deal with it." 

>You grin and start walking off as you talk to them over your shoulder
"Thanks for playing, you can pick up your participation badges at the door. I'm out of here."
>The two of them run to your sides and immediately start badgering you for one more match
>No matter how much they beg or bribe, you refuse
>It's been a long, boring day and you want to relax
>Your stubborn rejection is clearly frustrating them, which is kind of funny to watch
>Soon enough you see Applejack get a determined glint in her eye and she pauses to adjust her hat
>She saunters up to you and gives you a sultry grin that you've never seen her use before
>"C'mon now, Anon. Won't ya help a girl out? Ya don't even have to do any more judgin', just give me one itty bitty little point. I can make it worth yer while."
>As she says this she rubs against you seductively
>Not to be left out, Dash flies up and grabs your head to pull you into a deep, passionate kiss
>It takes you by surprise and you can't help but instinctively kiss back
>The competitive look on her face rapidly melts into pleasure 
>After a minute Dash pulls back and catches her breath before giving Applejack a smug look
>"You'll have to do better than that, AJ."
>Applejack just smiles and steps closer to you
>"Oh, I plan to."
>Suddenly she rears up and plants her hooves on your shoulders, pushing you back until you're pressed against one of her trees
>Immediately she leans in and starts planting kisses along your neck, occasionally pausing to nuzzle it
>Dash moves in as well, trailing her hooves along your chest sensually
>It all becomes too much and you push them off of you
"Okay, enough. Stop!"
>They seem surprised that you stopped them
>Fixing the two of them with a flat, unimpressed stare, you cross your arms
"I can't believe you two. All this, for some stupid competition?"
>Both of them have the decency to look ashamed
>Applejack blushes lightly and looks away
>"Not -just- for that, sugarcube."

>That would be kind of sweet if it wasn't for the attempt to seduce a win out of you that just happened
>Now you're mostly irritated and a bit horny
>If it's going to be like that, you might as well go all the way
"Alright, fuck it. Here's how it's going to go. You want to win so badly? Earn it."
>You drop your pants down and expose your slowly hardening cock
>As you give it a few strokes to get it to full length, you catch Applejack licking her lips
>Dash is simply gawking while trying to look like she isn't
"You're up first, AJ."
>Barely are the words out of your mouth when she darts forward and brushes a hoof against your shaft
>She plants a soft kiss on your tip that makes you throb with desire, then looks up at you with a grin that's somehow both adorable and sexy
>"Strap yerself in"
>Without hesitation she dives forward and swallows your cock, pushing down further and further until she gets all the way down and your cock is lodged firmly down her throat
>Your jaw is hanging open as you look down at the cute little farm mare with her lips around the base of your dick
"Holy shit."
>The corners of her lips curve up in a smile and she slowly starts bobbing up and down with you never entirely leaving her throat
>Dash is sitting in the grass and watching intently with her wings extended, biting her lip and obviously restraining herself from moving her hoof between her legs
>Feeling Applejack swallow and convulse around you is intense and you can't help but reach down to stroke her mane as you moan in appreciation
>After a few minutes of her facefucking herself on you, she pulls back with an oddly worried expression
>"Am I not doin' it right? I ain't never heard of a stallion takin' so long to finish."
>Realisation dawns and you give her a reassuring smile
"That was amazing, really. Humans just last a bit longer than stallions."
>Relief washes over her face, followed by a flash of desire
>"I guess I'll just hafta work harder, then."

>You stop her as she leans forward again
"Woah there, pony. I like the enthusiasm, but let's give Dash a turn."
>Applejack grins ruefully and steps away
>Swallowing nervously, Dash walks up and pauses in front of your cock which is still hard and glistening with Applejack's saliva
>Her slow start prompts Applejack to throw in a taunt
>"What's the matter, Rainbow? Ya ain't givin' up, are ya?"
>At the challenge Dash narrows her eyes and moves in confidently, licking all over your shaft before swirling her tongue rapidly and dexterously around the head
>You're not sure if she's licking up the spit on purpose but it's hot either way
>Finally she wraps her lips around you and sucks firmly, never letting up with her tongue
>Dash's movements are short but quick, and she attacks your cock with so much energy that it's almost overwhelming
>Apparently Applejack doesn't have the same reluctance as Dash about touching herself since you notice her with a hoof rubbing her pussy as she watches the two of you
>You let Dash keep going for about the same amount of time as Applejack did before gently pushing her off you
>She looks up with a hurt expression and you chuckle a little
"Don't give me that look. You did great."
>Adopting a phony announcer voice, you grin at both of them
"But it's time for the next portion of the event. Ladies, take your starting positions!"
>Their heads tilt simultaneously in confusion
"Turn around, tails up."
>Once you clarify they scramble to comply, lining up beside each other and lifting their tails to give you a nice view of two wet and winking horse pussies
>Funnily enough they both look over at each other and do a competitive stare-down
>Applejack breaks it off to turn her head back and give you the bedroom eyes
>"Ready an' waitin', sug."
>She wiggles her curvy hips at you and you take the time to admire her shapely, muscled backside
"As tempting as that is, AJ, you did get to go first already." 

>Dash shouts out a happy "Yeah!" and pumps a hoof in the air before sticking her tongue out at Applejack
>Your sharp swat to Dash's rump makes her yelp, cutting the celebration short
"Behave, or you won't get any at all."
>She settles down immediately, and you reward her by stroking your hands up her legs, moving them up to grab both her cheeks and squeeze firmly
>Dash isn't as muscular as Applejack, but her sleek, athletic body is still just as much fun to play with
>With a soft moan Dash presses back against you
>"Just do it already, Anon."
>You smirk as you continue massaging her flank
"Do what, Dash?"
>Sliding your shaft back and forth between her legs and against her lips makes her shudder and grind her hips
>"Argh! What do you think? Rut me!"
>That's all you wanted to hear, so you pull back until the tip of your cock is pressed against her wet sex and thrust in deep