(For sidekick) (Orgasm control/denial, underwear, in-public (kinda), oral)
 
>you are Shining Armor
>it's one of your first days in your new job as Royal Guard
>the training is intense, but the job is relatively easy
>not today though
>today is special
>today is the day Big Macintosh is having his way with you
>no, not like that
>you two made a bet
>a bet that you wouldn't cum at all today
>it had been weeks since you had cum, but you were confident
>he was too
>he had made a very special setup for you
>two small yet powerful vibrators
>one tied to the base of your sheath
>the other tied to the base of your balls
>not too tightly though, of course
>the remote that controlled them would sit with Mac all day
>whenever he felt like it, he'd turn them on and tease you
>unbeknownst to your other guards, you'd be slowly getting hard
>the vibrators sending waves of pleasure through your loins
>you would try and hold in your lustful moans
>and your cum
>that warm, fresh cum
>to make things easier for you
>or maybe worse
>Mac had bought you a new pair of bright red boxers to wear under your armor
>you might all be men, but it wouldn't do to have the guards staring at your vibrating junk
>it wasn't until he set you up this morning that you realized that they were a size too small
>he just grinned devilishly when you mentioned it
>with a quick test of the vibrators and a harsh slap on the ass, he sent you off to work
>but not before he turned you around and whispered in your ear
>”Now, ah know this is gonna be hard for you
>ah expect you'll be leaking pre all over those boxers
>just like the little slutty unicorn you are
>in fact, ah'd be offended if you didn't
>but...”
>he leans in closer
>”When you come back 'ere tonight
>if ah see even a single drop of cum on 'em, ah win
>you don't want to know what happens if I win.”
>but you aren't worried
>the rules were on your side, after all
>he couldn't keep the vibrators on all day
>”That'd be cheatin'”
>and your training meant you had iron-hard focus
>you think
 
 
>the first time didn't happen until you were lined up for morning workouts with your shift
>as your captain was explaining how far you'd run, you felt it
>the vibrator on your balls had turned on, and was slowly starting to work its magic
>you yelped and jumped a little in surprise, quickly catching yourself
>the captain just gives you a strange look and continues explaining
>you smack yourself for not recognizing the sensation immediately
>you relax and scoff at the attempt
>your shaft was hardly twitching at all
>Mac was gonna have to do better if he thought--
>without warning, your balls start vibrating faster
>you curse under your breath as your shaft starts to harden under you
>the vibration is starting to feel really good
>as your dick gets closer to its full length, suddenly it stops short
>you quickly realize that the boxers were too small on purpose
>your quickly hardening shaft is pressing against the front of your new underwear
>the more you get hard, the tighter they get, and the more pressure is on you
>the pressure isn't uncomfortable, just maddeningly good...
>the vibrator stops
>you moan a little, and try and grind your hips forward
>Mac seems intent on making this as hard as possible
>suddenly, the captain orders you to start the run he described
>you hope the exercise will kill your boner
>you start jogging, but the vibrator on your sheath starts up
>you know you can handle it, but...
>your cock won't go down
>the motion from the jogging is rubbing you against those boxers
>the fabric flicks and rubs across your balls as they bounce from your steps
>you can't help but feel as a small drop of pre oozes out of your cock
>it quickly smears across the front of the boxers
>the moisture only helps your cock move better
>you try and hold back a moan as your sensitive head rubs circles in the soft fabric
>your balls ache for release as your cock twitches
>you shake your head and pick up your pace
>you can feel an orgasm trying to surface, but your focus on running seems to be holding it back
>for now
>but you can still feel it
>the maddening tingle of the vibrator at the base of your rock hard cock
>the primal desire to buck your hips and paint these boxers white
>to mess them up with your hot seed
>to feel the rush of pleasure as your cock smears that cum all over you
>but you're determined to win
>you finish your run, far ahead of the other guards in your shift
>guess you got a little carried away
>your captain eyes you approvingly, and sends you to your post
>he smacks your butt as you pass by
>it's a friendly gesture, that's all
>but the sudden move sends your cock reeling in pleasure
>as if by magic, the vibrator stops before it gets too intense
>when he's out of earshot, you let out a pitiful moan
>today is gonna be a long day
>a very long day
 
 
>it's near the end of your shift
>you don't know how you've made it this far
>Mac must have practiced with these things before
>there's no way he couldn't have
>there were so many times he could have made you cum
>so many times that you've been right on the edge
>your cock straining so hard against those bright red boxers
>your balls aching with the load your body wanted
>no
>NEEDED to deliver
>and always, just as you didn't think you could hold out any longer
>the vibration stopped, making you squirm and pant embarrassingly in denial
>every.
>single.
>time.
>you were still determined
>but you were also nearly mad with desire
>you don't think you've ever leaked this much pre in your life
>those tight, beautiful boxers had to be stained five ways to hell by now
>the idea turned you on like you couldn't believe
>the underwear absorbing all the pre you had to offer
>just like a horny stallion, desperately trying to take everything you had to give...
>you quickly stop yourself before you get hard again
>that was the last thing you wanted
>the only thing you needed
>but you were gonna beat him
>you had to
>suddenly, you hear the bells signaling the changing of the guard
>was it already 6 o'clock?
>you breathe a sigh of relief, and the other guard you were standing with shares your sentiment
>you find your captain near the entry hall of the castle
>after saluting and giving your report (no action whatsoever), he dismisses you
>you make your way for the front gate when you feel it
>both of the vibrators turn on at once
>the sudden rush of pleasure is too much, and you shiver and let out a moan
>your captain gives you a very confused look, and opens his mouth to say--
“SorryIgottagobye!”
>you rush out of the castle, the evening air feeling cool against your hot fur
>you can feel it
>this time, Mac is gonna go for it
>the vibrators are in sync, and they're slowly going faster and faster
>you didn't realize how much your balls ached until you felt the vibration massaging them
>within seconds, you're absolutely rock hard
>your cock is straining so hard against your boxers
>it's almost painful how the fabric is gently rubbing your shaft
>how your head is being cradled in the front
>you break out in a sweat
>other ponies are starting to stare
>you quickly trot off in the direction of your apartment
>why did you have to live 20 minutes away from the castle?
 
 
>you make good ground, but you're starting to lose control
>against your will, the vibrators are still going faster
>waves of pleasure are radiating from the base of your cock
>your balls are tingling, heavy with the weight of that heavy load you're carrying
>oh, how badly you want to give in
>your desire to win is grudgingly fading under the torment you're getting
>you try and trot faster without drawing too much attention
>you can only go so fast
>the underwear feels like it's getting tighter against your aching groin
>they distract you like you wouldn't believe
>you can feel the heavy drops of pre leaking from your cock
>it's too much for the fabric, and your cock is starting to get slick from your hot fluids
>you try and suppress a whinny and look up
>you can see it
>your apartment building is just in the distance
>you're gonna make it!
>but then it happens
>the vibrators suddenly jump to what you fear is their highest setting
>you haven't felt anything like this before
>your entire lower body has become a mass of pleasure
>your knees almost give out under you from how good it feels
>your cock is twitching madly now, every movement you make is only stimulating it more
>your balls are drawing up close to you now
>you're not gonna make it
>you have to make it!
>you're not gonna make it
>you quickly gaze around you
>there are ponies all around you
>you can't cum right here
>you quickly spot a small alley behind some of the neighboring buildings
>using the last of your strength, you run to it and collapse, hoping you were out of sight
>you can't hold it in any longer
>biting your arm, you try not to scream as it hits
>your hips buck back and forth as your cock explodes in pleasure
>unable to hold it in, your hot seed shoots into your boxers
>the fabric takes it all, its tightness coaxing more and more out of you
>your semen sloshes around in the underwear, coating your throbbing cock and balls
>you're positive they're ruined, but you can't think about that right now
>your mind is alight with pleasure, your denial finally being satisfied
>you writhe there on the ground for what feels like hours
>you've never felt this good before in your entire life
>it fades eventually, and you try to catch your breath
>the vibration isn't stopping
>before it becomes too uncomfortable, you pull yourself up and try to find your way home
>thankfully, none of your neighbors are out
>you quickly unlock your door and slip inside
>you tiptoe along, hoping you can avoid seeing him...
>you hear a throat clearing from your living room
>you quickly turn around and meet Big Macintosh's eyes
>from your look of panic, he starts grinning widely
>”Ah win.”
 
 
 
 
Alternate ending:
 
 
>you rush out of the castle, the evening air feeling cool against your hot fur
>you can feel it
>this time, Mac is gonna go for it
>the vibrators are in sync, and they're slowly going faster and faster
>you didn't realize how much your balls ached until you felt the vibration massaging them
>within seconds, you're absolutely rock hard
>your cock is straining so hard against your boxers
>it's almost painful how the fabric is gently rubbing your shaft
>how your head is being cradled in the front
>you break out in a sweat
>other ponies are starting to stare
>you quickly trot off in the direction of your apartment
>why did you have to live 20 minutes away from the castle?
 
>you're running through the streets, pure adrenaline running through you
>you made it this far
>THIS FAR
>the vibrators on your cock and balls are nearly overwhelming, but you push on
>even with that wonderful sensation...
>even with the tightness of Mac's boxers holding your cock so tightly...
>so tight, your dick can't even slap against your stomach lewdly
>it feels better in ways you couldn't have imagined...
>you mentally slap yourself for getting distracted
>you hardly even notice the other ponies in the street staring at you
>you're surely a strange sight to see
>not nearly as weird as the scene would be if you didn't have those boxers on...
>then they'd really stare...
>you slap yourself again
>as the pleasure coursing through picks up again, you see something in the horizon
>it's your apartment building!
>you're gonna make it!
>the extra burst of adrenaline rushes through you as you hit the front entrance
>gravity means nothing as you practically fly up the stairs to your apartment
>as you reach the door, something changes
>you feel the vibrators hitting what you fear is their highest setting
>in a shocking moment of clarity, you manage the door open before it overwhelms you
>you hear a large *thump* as you burst into your living room
>Big Macintosh, waiting for you to return, had fallen off your couch
>he looks more confused and surprised than hurt
>the control for your vibrators was in his hoof, and is at an odd angle
>you feel the vibrators slow down, guaranteeing your victory
>Mac gets to his hooves, stammering
>”S-Shining! Ah don't...why are ya home so fast?”
>you walk up to him, looking in his eyes with a hungry grin
“You thought it'd be really clever, huh?
Slowly get me going all day, just to get me on the way home?
You should have known I run faster than that.”
>he opens his mouth, then shuts it
>he knows he's lost
>you're suddenly reminded of the throbbing tent you were pitching under your armor
>you motion a hoof towards yourself
“I won. I've been waiting a while, you know...”
>he grumbles, but gets to work removing your armor
>his hooves running along your fur feels so nice...
>in just a short minute, you're left in just the red boxers Mac put on you this morning
>the smell of musk hits you both, and you grin sheepishly
>he tries to slide them down your flanks, but you stop them with a flash of magic
“Nuh uh. You were on to something when you bought these.”
>he grins, pleased they had an effect on you
>you plop down on the couch, the tent you're pitching pointing straight upwards
>”Uh...Ya really want me to...?”
>you flash him a quick smile
“I won. Or did you maybe forget”
>he shrugs, and lowers his head to your crotch
>after a quick breath, he slowly starts running his tongue over the bulge that is your balls
>you roll your head back in pleasure, letting out a sultry moan
>the kind you've been longing for all day
>you know that you're not gonna last long like this
>not after the day you had
>he seems to notice too, and raises his mouth to your shaft
>letting out a warm breath over your now-twitching dick, he licks you through the soft fabric
>moaning louder, you revel in the sensations
>his wide, flat tongue working over every surface of your shaft
>it's better than you expected it to be
>you place your hoof behind his head
>more for dominance than pressure, really
>Mac doesn't seem to mind, and licks faster
>you feel the pressure starting to build up deep in you
>as the blood rushes through you, the boxers seem even tighter
“Ah...Mac, I'm almost..!”
>he raises his head quickly, finding your flared cock head through the fabric
>as you feel your orgasm starting to hit, he swirls his tongue in circles around your head
>unable to speak, you buck your hips and make unintelligible noises as you hit your limit
>the pleasure is overwhelming
>you've never felt this good before
>the hot seed you've been keeping in all day is coming out in thick ropes
>what can pass through the boxers is going right into Mac's waiting tongue
>the rest is dripping down your shaft, coating the underwear in your cum
>it feels like hours you're laying there like that, in total bliss
>but eventually it stops
>you look at Mac
>he's obviously pleased he got you off so well, but you can see how painfully aroused he is
>he moves a hoof down to stroke himself, but you grab it with another flash of magic
“I don't think so.
Or did you forget what we agreed on?”
>you grin devilishly
“It's your turn now.”