Perfect Pony Pet [mlp]

>"No Lyra, I won't "horsify" you."
But I NEEEEED it, don't you understand?
>"Ugh, why?"
It's a gift for Anon's birthday. How can I be a good horsey if he can't even ride me?
>"Lyra, how long have we known each other?"
For...a few years at least?
>"And yet you don't make one bit of sense more than you did then."
BIT! I KNEW there was something I forgot to order in a larger size!
>"Lyr-"
PLEAAAAAAASE Twilight? Pleasepleasepleasepleasepleasepleaseplease?!
>"UGH! Alright, I'll do it, but you owe me."
OH THANKYOUTHANKYOUTHANKYOU! You won't regret it.
>She just rolls her eyes and charges her spell.
>You're enveloped in a bright, blinding light as you feel your body rapidly grow.
>When it stops, you look yourself over to see you're about the size of a Saddle Arabian.
>"So, how is it?"
Hmm, make me bigger.
>"Bigger?"
Yeah, bigger. I should be about 5,6 at my shoulders.
>"Th..That's HUGE, why in the world would you want to be that big?"
Because that's how big Anon said shire horses are.
>You levitate a crude drawing from your saddlebags to her face, showing roughly the proportions you should have.
By the way, did you know humans measure horses in hands? I think that's super interesting.
>You can't help but trot in place a little from excitement.
>"I, uhh, think he forgot to tell me that part."
>She shakes her head and hits you with another blast of energy, causing you to grow yet larger.
>You're MASSIVE, and Twilight looks so very tiny. Even Anon might look small from here.
It's PERFECT! Thanks Sparkly, I'll make it up to you later.
>"Yeah, just don't make a habit of trying to get me to help with your weird fetish stuff. Please?"

>With a nod, you grab your, now many, many sizes to small saddlebags, and try to leave.
>It...takes a while. You have to get down really low and sort of squeeze yourself through the doorway.
>Once you're out, you stretch out and trot around a bit, getting used to your new bulk.
>Satisfied, you set out, getting quite a few looks because of your size, even more than normal.
>But you don't care, you're a mare on a mission, and the next part of that mission is...
>You pull out your list and look it over...
Stop by the boutique and pick up my new saddle and stuff. ALRIGHT!
>You break into a gallop, mostly to see if you can still handle yourself, and find yourself surprised with your speed considering how lazy you normally are.
>Reaching the store in time that might shame Applejack, you knock on the door.
>"Come iiiiinnnn darliiiing."
>Shrugging, you slowly squeeze your way into the building.
>The lobby's empty, so you call out.
RARITYYYY! I'M HERE FOR MY STUFF!
>She comes trotting down the stairs, talking as she does.
>"Ah, Miss Heartstrings, just on time, I...
>Her mouth hangs open a moment before she composes herself.
>"I, umm, I suppose that's why you requested a, ahem "fuckhuge saddle".
>Shaking it off, she levitates a large version of your old one from the back and onto your back.
>"And look at that, it fits perfectly, Rarity, you truly are a master of your craft."
>It probably helped that you did the math and gave her your guess.

>A halter is then brought up and you put it on, only to show it's a far too small.
>"Oh dear, well, that simply won't do, will it? Give me a moment to fix it."
>You plop down and watch as she goes to work at a rapid pace.
>It doesn't take long, and she's putting it back on. It fits perfectly now.
>"There now darling. Oh my, but don't you look positively charming!"
Thanks Rarity, I'm sure Anon will love it.
>She makes her way to the register and checks her numbers.
>"Alright, one extra extra EXTRA large saddle in leather, one halter in leather, and..."
>She lifts a small bag onto the counter.
>"And a set of reigns in leather. That comes to, hmm 117 bits. Sorry darling, but leather isn't cheap."
>You groan, but pay anyway, it's more than worth it.
>Thanking her, you take your saddle off so you don't scuff it up squeezing through the door, and make your way out.
>"Thank you darling, and remember carousel boutique for all your future clothing needs."
>With that taken care off, you check your list again.
Let's see, get new lyre strings, and pick up a birthday cake for Anon.
>You take off straight to the bakery, the strings can wait. Your lyre wasn't broken, but better to have extras than not.
>Reaching Sugarcube Corner in record time once again, you start the increasingly annoying process of squeezing through the door.
Yeah, I can see that getting old fast...
>Shaking to attention, there are many ponies in the building staring at you, including Bon Bon working the counter.

>She stares at you with a look you're all to familiar with.
>That mix of a thousand mile stare, disappointment, and an eye twitch that says "What the fuck are you doing?", mouth hanging open.
>She starts to say something, and you cut her off and end it as you always have.
>By pointing a hoof right at her and saying "Don't tell me how to live my fucking life Bon Bon." in the most monotone voice you can manage.
>She rolls her eyes as everyone else goes back to their business, probably used to these episodes.
>"Right...so what are you doing here?"
Well, it's Anon's birthday and I-
>No sooner does the word birthday pass your lips, and Pinkie bursts outta fucking nowhere.
>"OHMYGOSHIT'SNONNY'SBIRTHDAYOHWOWIDIDN'TKNOWINEEDTOTHROWHIMAPARTYWITHABIGCAKEANDDECORATIONSANDLOTSANDLOTSOFPONIESAND-
>*GAAAAAASP* *huff* *gasp*
So Pinkie, guessin you wanna throw Anon a party?
>She somehow jumps on your back and ruffles your mane.
>"Course I do silly, just let Pinkie handle everything, I'll throw Nonny the biggest, most super funerific party EVER!"
Alright Pinkie. You think you can get it ready by 8?
>She looks at the clock.
>"HA! 3 hours is 3 more than P0nyville's pinkest party pony needs! Consider it done!"
>Before you can say anything else, she bolts out, you yell out the door for her.
IT'S AT ANON'S HOUSE, ALRIGHT?
>She totally heard you.
>Turning back, you spend the next couple of hours catching up with Bon Bon while she works.

>About 2 and a half hours pass, and it's about time to get home, Anon would be home very soon and you do NOT want to be late.
>Squeezing through the door, followed by Bon Bon, you don your new saddle and levitate bon bon onto your back.
>With no warning, you take off at full speed for home, Bon Bon screaming as she holds on for dear life.
-
(Anon's PoV)
>It's been a long, long day. Birthday or not, you've still got responsibilities to take care of.
>Still, your minty green pet always knows exactly how to cheer you up.
>You open the door and step inside, the second the lights go out, a rainbow of horses explode from every nook and cranny in the room.
>And a certain pink mare is wrapped around your head, talking at a mile a second.
>Prying her off, you pat her head, give her a thank you, and let her get to celebrating.
>With your vision no longer blocked by the giant pink fluffball, you now notice that, among the tiny ponies, a single giant green horse stands out among the crowd.
>She trots up and does that horse hug thing, throwing her neck over your shoulders and nuzzling you.
>"So, umm, Sir? Do you like it? I mean, I umm, heh, I did it so you could ride me around. You said humans do that, right? I mean..."
>You put a hand over her mouth to shush her.
It's...surprising to say the least. I don't know, give me a little while to process it.
>"I...alright, Twilight can totally change me back if you don't like it."

>One good thing about Lyra is, when she gets to worried or worked up about trying to please you, she's very easy to calm down.
>You simply put a hand on her cheek and gently drag your fingers forward, much to her delight.
>Holding her snout, you lean in and give her a small kiss.
It's alright Lyra, just enjoy the party, we'll talk later.
>She lets out a squee then trots off to party, leaving you to do the same.
>Looking around, the party is rather small by Pinkie's standards.
>Though that could be because a few ponies find your relationship with Lyra somewhere between weird and racistly offensive.
>It doesn't help that she's openly proud of being your pet.
>At any rate, you still have more than a few friends, and you intend to enjoy your party.
>Games, dancing, food, song, a giant cake that Pinkie mostly ate herself.
>Pinkie's parties may have been a bit child like for your tastes, but it's still a good time for all.
>Sure, Bon Bon the destroyer may have given you an ear full, and sure, Lyra dropped a LOT of innuendo when you were playing pin the tail on the pony.
>But still, a good time.
>Eventually, it winds down, and the last of your guests are shuffling out the door.
>Once the last is gone, you lock the door and call an only slightly drunk Lyra to attention.
>Realizing her owner is calling her, she quickly stumbles to her hooves and makes her way to the center of the room.

>Standing straight and motionless as she can in her tipsy state, she simply watches and waits as you silently look her over.
Don't move, I'll be back in a little while.
>"Yes sir."
>You go to your bedroom and grab your "tool" belt and head back towards the living room.
>Stopping in the hall, you simply stand there and watch her for a few minutes.
>Aside from a gently sway, she hardly moves a muscle, not even her ears twitch towards you, so you don't think she realizes you're watching.
>Or maybe she does, it is being extra serious about your orders today.
>Maybe her training is just starting to sink in.
>At any rate, you've left her waiting long enough.
>Taking a whip from your belt, you wrap it around your hand and begin circling her like a predator.
So...you you didn't even think to tell me before making such a drastic change?
>"W..well sir, it was supposed to be a gift for you..I thought you'd enjoy being able to ride me, and Twilight can undo it."
True, true, but it's still a huge decision, and you had no right making it without my consent.
>*CRACK*
>Lyra yelps in pain as you land a harsh blow across her haunch.
>You land several more on her rear, but despite the pain, her hooves stay firmly planted.
>Feeling satisfied with the punishment and how she handled it, you move on.
Now, let's talk about this new gear.
>You tap at her new saddle.
Where did you get the money to pay for it? I don't recall shelling out for that.

>"OH! Well, I saved my allowance, and payed for it myself!"
>"It wouldn't be right to use your money on your gift...well, it's all your money I guess."
>She idly scuffs a hoof along the ground while avoiding looking you in the eyes.
You used your own money?
>"Yup!" She beams proudly.
Really? Hmm, I don't really....well, I don't let you have much.
>Reaching to a nearby bowl, you grab a sweet and offer it too her.
>She eats it from your hand as you pet her mane, as she looks up at you all the while.
Well, I certainly can't be angry at you for that.
>As she comes up from eating her treat, she's already breathing raggedly.
>"Th..thank you sir."
>Returning a nod and a smile, you once more return to looking her over.
>Taking the time to carefully examine every inch of her, from her face, to the curve of her back, to her belly and legs, you make sure to make generous use of your hands.
>By the time you finish, her breathing is ragged, and you haven't even touched her tail.
>Saving the best for last, you switch your whip for a riding crop, and tap her tail with the end, causing it to quickly move to the side for your ease.
>She's already winking rapidly, her body already begging for you, even if her mind won't let her show it otherwise.
>Simply pressing the paddle of the crop to her sex is enough to signal her to try containing herself.

>She manages it, but you can see her still quivering slightly as she tries to hold back reflex.
>And there's nothing to be done about the rather impressive wetness she's already worked up.
>You look it over, examining every inch, every fold and wrinkle, every detail.
>Spreading her lips wide, you carefully examine her interior, and then, satisfied, start working your arm inside.
>She gasps and moans before resuming her delightfully vulgar display and looking back to you.
Eyes forward Lyra.
>With ragged breath, she manages a nod and a small "Yes sir." before she returns to pretending the nearest wall is the most interesting thing around.
>As you work your way in with relative ease, she can do nothing to stop herself from spreading her legs wide for comfort.
>Eventually, you reach the end. You're in up to the shoulder, your hand rests in an open area deep inside her.
>She's barely moved, so you decide to reward her.
>Dancing your fingers inside this cavern, her legs start to buckle, and you begin pulling your arm free, dragging your fingers along the bottom of her cunt as you do.
>As your fingers leave, she finally gets release, her front legs give as she releases an impressive amount of fluid.
>You're soaked, but you don't care. Giving her a moment to recover, she looks back at you.
Well, you still look, feel, smell....and taste fine.
>"OH? Heheh, thank you sir, I'm glad you like it!"

There is one problem though.
>Her breath catches in her throat.
>"W..what's that sir?"
>You grab her haunches and spread her pucker wide with your thumbs, mockingly looking into her.
As much as I look, this hole seems strangely empty. Why is that?
>You hear her hissing through her teeth as she tries to come up with something.
>"Umm, well Anon...uh, sir. I figured that since I was having this done, I was worried any toys might...fall in?"
So you didn't even wear it today?
>Her head drops a little. "No sir."
>You take out your riding crop and begin idly working her rear with the handle as you speak.
I see, so now you're breaking standing orders.
>"N..NO SIR! I-"
That wasn't a question. I can understand your reason, but you still broke a general rule without even trying to ask for an exception.
>Her head drops much lower.
>"I'm sorry sir."
Keep your tail up and don't move.
>She complies as she resumes a ramrod straight position, and you pull your crop from her rear and take your place to the side just in case she kicks.
>Gently prodding her marehood with the crop paddle once again, you raise it and bring down on her sex with a smack.
>She screams in pain and surprise, and jumps a little on reflex.
>After giving her a moment to settle down, you take position again.
Lyra, your tail is down.
>She looks at you with a worried look, but slowly moves it again.
>Another jump, another hit.
>You consider applying a special condition to drive some sort of point home, but you feel she's suffered enough after 5 hits.

Alright Lyra, on your back.
>She looks uncertain, doubtlessly because of the rather harsh whipping you gave her, but complies.
>Straddling her chest, you grab her forelegs, you push them aside and lean forward over her face.
Lyra, you know why you were punished, right?
>"Because I...because I broke one of the few rules you've given me, and because I made a big decision that affects us both without even talking to you first."
Right! I don't ENJOY hurting you, but rules are rules. You understand?
>"Yes sir."
Good girl. Now, for what it's worth....
>You lean in and plant a deep, passionate, if somewhat awkward kiss on her lips.
I do love your gift.
>She goes beet red and squees.
>Climbing off her, you call her to follow.
Now come on, it's time to get cleaned up.
>"YES! Brushy time!" she almost shouts as she trots the room in tight circles.
>You can't help but smile, her ability to shift from a very proper sub, to a energetic and rather silly mare like a switch never ceases to amuse.
-
>A few hours later, you're laying on a makeshift pallet of blankets and pillows in the living room you'd set up after finding that, surprise, she's too big for the bed now.
>That rather impressive belly of hers serving as a fine, warm thing to cuddle into.
>Tomorrow, you'd take her out for her first ride.
>If the two of you decided to keep her this way, you'd soon have to begin making a lot of changes to accommodate her size too.
>It could be a lot of work....
>You look at her contented face, and smile yourself.
>But it would be worth it.