Be Careful What You Swap For

Octavia pulls the bow across the strings slowly, holding the final note as long as she can. Her rendition of Beethoven is almost perfect.

Almost.

“That’s better than last time, but you’re still not putting enough vibrato in the notes. Most classical music is played from the heart, not from the sheet music,” you say.

“Honestly, I gave that one my best.” Octavia put down the cello and sat down. “It’s hard enough adopting that posture to play, but keeping the cello steady while playing a vibrato is torture on my lower back.”

You get up from your chair and go over to the cello. Due to the shape and size of it, there’s no way they could have made it “Earth-pony friendly.” You ponder for a moment what technique to teach her next, and pick the bow up in your hands. Your fingers rest on the neck of the cello and you play a few basic chords. “Well, you’ve still made great progress. You’re the only pony that’s come close to mastering our style of music, and that performance of Beethoven’s Fifth you did for Princess Twilight was fantastic.”

“Thanks, I just wish I had a body built to play such a magnificent instrument. Just imagine me on stage for a four hour set, with only one intermission… I could play an entire suite of music, without needing to take breaks to keep my hind legs from cramping.”

You smile and set the cello down. “Don’t fret, if it was easy it wouldn’t be worth doing. You want to practice some more?”

“I’d love to, but Vinyl will be home tonight.”

“Oh, that’ll be great. How long will I need to stay up in the attic?”

“She should only be here a few days, and I promise this time I’ll find a way to tell her about our arrangement.”

“Well, her reasons for not liking humans seem childish enough, I’m sure if she met me she’d like me.”

Octavia got up and put her cello in the case. “I’m going to go eat. I’ll bring up some soup if you like.”

“No thanks, I already ate.” You follow behind her and see a package sitting by the front door. Octavia didn’t notice it, so you pick it up. The brown box is heavy and the weight shifts as you pick it up. “Hey, you got a package.”

“Go ahead and open it, and tell me what it is. If I don’t eat soon I’ll starve.”

You tear the lid off the box and find a stone and a slip of paper. It is warm to the touch, and you pull it out and carry it in to Octavia. “Someone mailed you a rock, what’s that about?”

“A rock? Was there a letter in the box?” she asks.

“Yeah, here, hold this.” You hand her the stone and she extends her hoof to take it from you.

The instant her hoof touches the stone you feel a jolt of energy. It is like having the wind knocked out of you by a freight train. When you gasp for air, the pain is gone, and you feel like you’ve moved a few feet.

Blinking your eyes, you look down to see if Octavia is okay. You can’t see her on the floor, just your own legs. When you look back up, you come eye to eye with yourself.

“What the hell?” you shout. The girly voice you issue forth sounds like a pouty four-year old. Glancing down at your hands, you find a pair of furry grey legs. “Octavia! What happened?!”

“I don’t know!” Octavia is hanging onto the counter to keep her balance. She drops the box to the floor and the slip of paper falls out. She stumbles to her knees and hands in a clumsy attempt to reach the paper.

“Gah, I’ll get it.” You poke at the paper with your hoof, unable to grip it properly. You flip it over with a hoof and read the message after it lands face-up on the floor.

Octavia,

I know you’re headed to Canterlot for a concert this weekend. I located a strange artifact that I believe to be enchanted with a prank spell. Pound and Pumpkin were playing with it outside and it had them both in tears. They recovered and seemed fine, but I just can’t shake the feeling it’s from the Prank Emporium in Canterlot.

I just don’t feel right keeping it around the house. Whatever it did or didn’t do, it seemed to activate when two ponies touched it so I figured somepony who lives alone would be my best bet to return it to the store without accidentally activating it. With most of the unicorns out of town for the Equestria Games, I figure you’re the only one who can deliver this for me before two more ponies get pranked.

Mrs. Cake

You finish the note and stare at your hooves in disbelief. A sharp pain on your cheek causes you to squeal. Octavia pinched you, and starts to tug at your mane with her fingers. “Hey! What’s that for?”

“It… really made us switch places?” Octavia blinks several times, and then reaches over to pick up the stone. “Hold still, I’ll fix this.”

She pushes the stone against your side. Nothing happens. Octavia pushes it against your side again and gets the same reaction.

“We’ve got to fix this!” you squeal in your high pitched voice, lacking all the signs of class and sophistication Octavia had when speaking.

“Everypony is in the Crystal Kingdom. Maybe we can find a unicorn, but I can guarantee they won’t have a talent in magic. We might have to wait until tomorrow to get help,” she says.

You reach over and balance the stone in your hoof. It’s getting easier to be a pony as your mind acclimates. The stone is cold to the touch now, no longer tingling. “Hey, this was warm when I first touched it. Could it be out of magic?”

“I suppose if it is a prank, it may not allow you to reverse the spell right away. It could take time to recharge.”

“So we—”

The front door opens and bangs against the wall. “Octy! I’m home!”

“Shit!” you shriek, realizing Vinyl just walked in.

“Oh no, she still doesn’t know about you.” Octavia looks around for somewhere to hide her new six-foot tall body.

“You mean you. Quick! Get in the pantry and hide,” you whisper.

It’s a bit shaky standing up, but Celestia has mercy because you seem to have kept Octavia’s muscle memory. She does admirably in your lanky body as well. Octavia walks over to the pantry, opens the door, then hides inside.

“Hey, Octy, you have company over?” Vinyl says.

“Gah! No!” You smile and back away from the pantry. “I just, was…” Coughing, you try to imitate Octavia a little better. “Darling, I just got a parcel from Ms. Cake with some sort of magic stone in it.”

Vinyl glances at you and over at the rock, levitating it and the paper up. She quickly reads it and sets the rock and paper back in the box. “Eh, the magic is drained. It’ll probably take a day or two to recharge. What kind of prank was it?”

“I don’t know conclusively… it was empty of magical energy upon arrival.”

She lowers her sunglasses and raises an eyebrow. “You feeling okay, Octy? You haven’t sounded that uptight since your parents visited.”

“I’m fine! It was just a long day.” You yawn unconvincingly.

“Oh, I see. My little octopussy hasn’t had a good wub since I left on tour.” Vinyl smirks and approaches.

“No, I…” You back up, unsure what to do. One night in the attic you had heard Vinyl wub Octavia, and you were quite certain it was not an activity you wanted to experience. However, the alternative was revealing that you were a human, had stolen Octavia’s body, and she was hiding in the pantry.

“Come on, I’ve missed those juicy flanks while I was on tour. Just say the word and I’ll let you be bottom and I’ll do all the work.”

You glance at the pantry nervously. If Octavia wanted Vinyl to know there had been a terrible accident, she would have opened the door by now and revealed herself. Clearly, Octavia would want you to play along.

“O-okay…”

Vinyl floats her glasses to the counter and walks around behind you, slapping your flank hard with a hoof. “Giddy up!”

You stumble forward, feeling your face turn red with embarrassment as you trot towards the bedroom. A thudding in your chest betrays your nervousness, but Vinyl doesn’t seem to notice. The door to the bedroom closes behind you, and you realize she just trapped you in the room with her.

“I, uh, changed my mind. Headache and all, hehe.” You retreat to the bed, hoping Vinyl will take the hint.

Instead, she lights up her horn and you feel a tingling settle over your scalp. A feeling like cold water washes over your mind, creating a pleasurable sensation as the tension releases. “You know better, Octy. I can cure headaches. Am I going to have to punish you, or are you going to bend over that bed like a good mare?”

The situation is quickly getting out of control and you weigh your option. The floorboards outside the room seem to be creaking. You realize Octavia must be sneaking up to the attic to hide. If Vinyl didn’t spend her nights around loud music, she’d have good enough hearing to notice it to.

“I, could... um, you go first?” The thought of eating Vinyl out is infinitely more appealing then whatever she was about to do, or insert, into you. You shouldn’t be stuck as a female, let alone a pony, and hope that the money Octavia is paying you for music lessons is worth what you’re about to do.

“Heh, sure thing.” Vinyl walks over and hops on the bed, rolling onto her back. “But after that I’m taking my turn.”

You smile and walk over between her legs, hiding the appalled look on your face. This was different than a human woman. For one, their tits were right above their marehood. The soft flesh had a darker pink hue, and a more leathery appearance. “Okay, then.”

Vinyl’s marehood winks at you, inviting you forward. Slowly you lean in, holding your breath and hesitating, as if her pussy might lash out and bite you. You lick it once, the salty taste making you cringe.

“Come on, slowpoke, I had a long day too you know.”

“Ugh, patience, Vinyl.”

“You know I’m not into all that foreplay, Octy.”

After rolling your eyes, you lean forward and run your flat tongue up the slit. The shapes all wrong, but you’re getting used to it. Vinyl moans as you force the wide tongue inside her, scooping up the mixture of arousal and sweat in her folds.

Your breathing races as you consider whether or not this counts as cheating on Octavia. The breath from your muzzle hits Vinyl as you exhale, and causes her legs to twitch. You start to lick again, but aren’t putting your heart into it.

“Gah, alright, times up,” Vinyl says.

The tip of your muzzle is covered in juice as you stand up and pull back. “Huh? I’m doing my best.”

“I think we both know you can do better, so now I’m going to have to punish you.” Vinyl’s horn lit up and the nearby dresser opened. Toys, straps, and other sex-aids float out.

“Whoa, slow down—.” A magic aura lifts you up and drops you on the bed. “Hey!”

“That’s hey mistress, pet.” Vinyl has a mischievous grin and stares straight at you.

Before you can climb back off the bed, you feel cuffs close around your forelegs, trapping them near the headboard. She floats cuffs down to your hind legs get ties them down. “Come on, Vinyl, this is all a mis—mmph!”

Vinyl tugs the strap to the bit, tightening it up so you can’t speak. “What a naughty little pony you’ve become while I was gone. If I didn’t know better, I’d think somepony else was trying to steal my lover away.”

“Mmph mmmmph!” You tug against the restraints and complain, but can’t stop Vinyl.

She pulls out a whip and slaps your flank, hard enough to sting but not enough to break the skin. “Now, pet, the safe word is…” Vinyl makes a disgusted groan. “Mozart. You can grunt three times while you’re gagged too. Now, nod if you’re ready for a little of this.”

You’re about to shake your head, but you feel something both wrong and wonderful at the same time. Vinyl is rubbing a hoof between your legs, the smooth hoof gliding effortlessly over your slippery slit. The gentle pressure is sending a tingling sensation up your spine.

 You nod without realizing it until after the fact, and Vinyl has already taken your consent.

“Perfect. Why don’t I get us started the right way?”

Vinyl vanishes between your legs and you tilt your head up to try and see her. She exhales on your damp marehood, causing your whole body to shiver from the cold sensation. You feel so exposed and powerless as she sticks out her tongue, and begins to lightly tap it against your outer lips.

The tongue between your legs starts to run up and down, only an inch in, teasing you. It is hard to think, and you try your best not to enjoy it. However, all your worries about what Octavia would think if she caught you doing this are quickly replaced by a building warmth in your stomach.

The pressure builds as Vinyl’s tongue pushes inward. For a moment you realize her horn is glowing, then your head falls back to the pillow as she massages your teats. The aura surrounding your tits vibrates, then squeezes, adding a new source of pleasure.

Vinyl’s tongue has slid all the way in now, bringing her nose against your outer lips. As her tongue curls around and explores, her nose keeps up a steady pressure on your marehood.

The building warmth is turning into an inferno. The fullness of her tongue inside your pussy is making your muscles tremble. Your breathing speeds up and you start to buck your hips against her, making a loud neighing sound. The tingling has spread through your entire body, chased by the heat of your lust to be filled completely.

Just as you think you’re about to have your first orgasm, Vinyl pulls out. You whimper, feeling so cold and empty. All you can focus on is that feeling of abandonment as you start to calm down and the tingling vanishes.

“Now I think I have your attention,” Vinyl says. She turns around and backs up over you, her dripping marehood now above your head. “I think this time you’ll put a little more effort into eating me out. Otherwise, I won’t let you come.”

The bit in my mouth was surrounded by magic and removed, leaving you free to speak. You could tell her to stop, that this is all wrong, and that you’re a male. However, you can’t stop thinking about that orgasm, that once in a lifetime chance to experience it from the other side…

“Shut up and fuck me,” you blurt out.

Vinyl sits down, planting her wet folds across your lips. You stick your tongue out and wiggle it into her pussy. Vinyl mirrors your action, sticking her face into your crotch and quickly bringing back the warm tingling sensation.

You need this, so you focus more effort on making Vinyl come. Your tongue is longer than you realize, and you feel her cunt tighten up and reach a dead end. It’s full of slick juices and you run your tongue over every inch, which only makes Vinyl buck her hips against your face even harder.

She grinds her snout into your marehood and rubs your tits, acting feral as she rubs against you hard. She assaults your senses to her own rhythm, as if there were a bassline playing only she could hear.

Her own marehood is smothering your muzzle, making it hard to breath. You start bobbing your head in and out of her pussy, lapping up as much of her fluids as you can. Vinyl’s pace can’t be matched, but you give it your best effort.

Vinyl’s tongue, aided by her magic, speeds up. She’s thrusting deeper and faster into your cunt and you feel the pressure peak and explode outward. There is a rush of energy as your orgasm quickly builds and explodes.

The waves of pleasure don’t dissipate, and as your muscles spasm you begin to rub against Vinyl’s clit. She climaxes shortly after, fluids covering your face and running down into your eyes, stinging them.

Vinyl slows down and stops, yet the warm afterglow lasts far longer than it ever did as a male. You can almost feel her tongue inside you still teasing you, and the tingling warmth is only now beginning to vanish, what feels like minutes later.

You take several deep breaths, recovering from the ordeal.

“Whew, that was pretty good. Now, I want to hear you scream my name,” Vinyl says. She casts a spell, creating a sound-proof bubble around the bed. Vinyl then pulls out a large dildo.

“What?!” You are still weak from the last orgasm, not sure what she plans to do.

“I’m gonna have a little fun since you tried that lame headache excuse, and I want to hear you scream loud enough to wake the Princess’ in the Crystal Empire.”

Without further explanations, Vinyl thrusts the dildo into your already-drenched cunt. Her magic causes it to vibrate at high speeds.

“Gaaaaaah! Vinyl!” You’re about to scream stop, but the vibrations are so fast that they’re entirely overloading your senses. Your chance to quit while you were ahead and confess is gone. Now, you have what feels like 747 between your legs, and the vibrations are making the entire bed rattle.

She pushes the dildo in and out, and you feel the fading afterglow reverse. With all the stimulation, your pussy feels like it is on fire from the friction alone. Your muscles spasm and go limp, your body barely coping. Vinyl seems to be enjoying it, focusing her magic on your clit so that more of the vibrations hit it.

“Vinyl!!!” You scream, thrashing violently on the bed. The stimulation is too much, and you scream her name one final time as every muscle in your body tenses up.

You feel the dildo get shot out of your loose cunt, and your vision fading to black. The exhaustion catches up with you and your tongue hangs out of your mouth as you ride wave after wave of orgasmic bliss.

The last thing you see is Vinyl leaning in for a kiss before you pass out.