Anniversary Week

You awoke on the giant bed in Twilight's bedroom, a couple pizza boxes were on the floor on the side of the bed. Your head was resting against actual pillows this time, as it was just you and Twilight sleeping on the bed. She was next to you, conked out and slightly snoring. You noticed most ponies snored when they slept, probably something to do with their faces and teeth. You grabbed your phone from the bedside table and noticed it was about 9 in the morning. Thankfully, both you and Twilight were off today, and could sleep in. But you both liked getting out of bed before 11, since you usually had stuff like chores or were planning something fun for that day. But you don't know what she had planned for today, since it was finally the last day of your Anniversary Sex-travaganza, as you had billed it in your head. You boop your significant other on the nose as you stretch and throw the covers off.

"Whuh?" Twilight groans, her eyes fluttering awake as she feels the cool breeze on her arms, her pajama pants and t-shirt covering her curvy purple frame.

"It's after 9, egghead!" you say as you chest pass a fluffy pillow at her face. She catches it with her magic and hurls it back, and you're not sharp enough with your magic to catch it, so a *paff* muffles your voice as the pillow makes contact with your surprised face. It didn't do much to quell your morning mirth, you were actually well-rested, fed, and not covered in semen for the first night in a while, at a normal size with all of your body parts intact. You were feeling like a million bucks, even with the pillow assault.

"Only Dash can call me that, dumbass." She says, clearly pleased with her headshot. She got out of bed and walked over to you, kissing you on the nose. You caught a peek of her cleavage as she bent over. Still nice as always.

"Speaking of her, why haven't I seen your friends at all this week? You didn't think to involve them on all of this shit?"

"Eh, just hasn't come up. I wanted you to get the full experience with me and the other princesses before we branched out that much."

"What about Cadence? I haven't seen her this week. Did she not want to get involved? You know, Princess of Love and all."

"She had Crystal Empire stuff to do. I think she's coming back tonight, not sure though. All I know is that we're going to be late for breakfast. So let's get dressed and head down."

"K!" you say, as you slip off your pajama pants and throw on some basketball shorts and a hoodie. Twilight casts a quick spell to conceal her downstairs bulge and throws on similar shorts and a t-shirt. You walk down to the dining room in the castle, and you see a bounty of food waits for you. Scrambled eggs, tofu bacon, french toast, waffles, and what appeared to be mimosas. And that wasn't even all of it.

"Just a little token of my appreciation for putting up with my bullshit." she says, giggling as your jaw is on the floor.

You see Celestia, Luna, and Cadence already sitting down, sipping their mimosas while conversing.

"Come on, we're waiting for you!" Cadence says. "We flew back all the way for this, and boy are my wings tired!"

You scoff at the dumb joke and speed walk over to the table, sitting down and placing a napkin on your lap before a glass of champagne is poured in front of you and mixed with the orange juice.

"Where's Shiny?" Twilight says, already grabbing a few strips of the bacon.

"He's prepping decorations and signing off on deliveries for the party tomorrow." Cadence says, in between bites of eggs.

"Tomorrow?" you say. "I thought it was today."

"No, silly." Twilight says, as she squirts hot sauce on some hashbrowns, "We've got one more day of fun to go. It won't be until later tonight so that you have a chance to let this settle."

"Any hints about what awaits me?" you ask.

"Just be in the conference room at 6. Wear only a robe."

Your eyebrows perk up as you process the requirements. You decide to react accordingly when it happens and dive back in to your breakfast. The rest of it goes smoothly as you chat with the princesses and catch up on what you and Twilight missed in your week of debauchery, and what Cadence and "Shiny" have been up to. It was all well and good, you all had a few mimosas (that had exponentially decreasing amounts of orange juice, you might add), and were getting a nice buzz going before Celestia and Luna realized they had real things to do. You all said your "see ya later's", Cadence and Twilight left to go meet with Shining Armor, and you went back up to your bedroom to dick around on your phone or computer or whatever and wait for tonight while you let your buzz wear off and your feast settle.

As it got closer to 6 o'clock, you went to your armoire to get your robe, when you realized you didn't even have a robe! Then a knock on your door came, and you opened it to find a plain brown paper gift bag sitting outside it with a note attached that simply said "<3 - Twi". You shut the door and place it on the bed. You dump the contents out and arrange them in a grid so you can see what was there. A note, a small assortment of bottles that look like the sample ones from liquor stores, a bottle of water, and what do you know, a fluffy robe. It was the same dark amber color as your magic was, and it had your first initial lovingly sewn on there. A small "CB" logo adorned the tag, so you know Rarity made this. She was pretty good at that. There were a total of 4 small bottles. Two pink, one was blue, and one was that same amber color. The amber one had a different cap, one that looked like it held an eyedropper in it. They didn't have labels, so you decided to read the note to see. It was written in a dark purple pen (of course), and was on basic cream card stock. Twilight was always one for function over fashion. It read:

To the best boyfriend ever (aka You!):
I want to thank you from the bottom of my heart for putting up with all of the events of this week, and for trusting me at every step of the way. From switching your sex, to the odd body modifications, to even turning you into my cum! You barely hesitated because you knew in your heart that I would keep you safe. You're going to have to trust me for one more night, and then this hectic week will have come to a finish. I know that whenever we would meet, my dear friends always had their eyes on you (can't blame em), and you had your eyes on them. While I'm glad you never acted on impulses, I'm giving you the opportunity tonight to do just that. I won't be there for any of the events in the conference room tonight, so it will be just you six. After the night there is over, come see me up here, and we can end it the right way. Take the pink and blue potions down there with you, the girls know what to do with them. I love you.

-Princess Twilight Sparkle

There was a small glittery sticker of her cutie mark next to it. It was one of those puffy stickers. You know how much she liked those.

You slip off your other clothes and slide on the robe. It was super soft and fluffy. You tied the rope around your midsection and place the 3 bottles in your robe, placing the amber bottle on the nightstand next to the bed. You walk down to the conference room, which was just adjacent to the throne room where the Cutie Map was. This room had better, padded chairs and a way smaller table when they didn't need the map. Which was more often than not. The door was shut, and so you knock a few times to see if they're ready.

"You can come in, only once you've taken the blue potion." you hear a voice say through the door. You twist the cap off of the blue potion and gulp it down in one shot. Blueberries, you think. Little bit of an alcoholic taste, too. "Show me the bottle." the voice says, as you open the door slightly. A white hand shoots out with a palm facing you, and you give the bottle to the "mysterious" pony. "Good." she says, as she opens the door the whole way after examining the bottle.

"Hello, darling. It's so nice of you to join me here." Rarity says, wearing a very similar robe to yours, hers in a purple that matches the color of her mane and tail. It was very loosely worn, almost sliding off of her shoulders. She stood at 6'5", a little bit taller than you. Her robe was, however, a lot shorter than yours. While yours came down to almost your knee, hers seemed to be halfway up the thigh. It wasn't tightly tied like yours was. Her cleavage was pretty nice, had to be a large D cup. Big, but still petite by her frame. She was wearing a slight purple gloss on her lips.

"I thought the rest of the girls would be here?" you said, as the room was empty aside from the fashionista and yourself.

"Oh, they'll be here, but I thought we could get the party started. I've seen those eyes you gave me when you first got here. Even a year into your relationship your gaze seemed to wander over here. It's a good thing we both know our limits, because less restrained ponies might have jumped at each other a long time ago. I'm going to give you something you've thought about for some time."

She sauntered over to you, hips swaying like a porno. She walks up close to you, and grabs your behind as she pulls up close to you. At this point, you think you know why she has her robe on loosely. She moves her head towards yours, and comes together in a kiss. She runs her lips over yours as you swap saliva like it was a cheesy scene from a movie. She starts to rub against your chest, flicking your nipples lightly as your chest felt like it just got a bit of a static shock.

"Before the fun really starts, I'm going to need you to get me ready. This robe is very restraining. Could you be a dear and take it off for me?"

You oblige, undoing the very loose bow she had tied on the front. As you untied it and slid it down her shoulders, you confirmed your earlier beliefs of why her robe was loose. A foot-long, lighter black horsecock. It was almost as wide as a tall boy can, already leaking some precum. It was being produced by her heavy testicles, about the size of a baseball. They were a darker light black. Like a charcoal grey. They were tucked in to what appeared to be a specially made pair of panties that hugged the duo tightly to her body. Darker than her mane, even. It came flopping down, bouncing back up to a 75 degree angle with her body, like most erect penises do. The bead of precum on her tip was sliding down, and dripped on to the carpeted floor, leaving a small damp dot.

"How...?" you stammer out, taking in the sight of her cock, which you absolutely know she didn't have before.

"You know Twilight takes care of her friends, darling."

"Well now, we can't be wasting any of that, now can we? Why don't you clean me up a bit before the fun really starts." While she is speaking, she lightly pushes down on both of your shoulders, coaxing you to kneel down and go head to head with her lower head. You slide the band of her panties down and slid them to her ankles, exposing the black flesh. You caught a whiff of what was apparently her musk, but it smelled more like a fine perfume. Her dick must be new if it hasn't built up anything serious. You stare back at her package, bobbing and dripping ever so slightly with her heartbeat. You lean in and breathe hot air on her slightly squirming testicles, which causes her to shudder a bit. You plant a kiss on each of them before taking the sack in one hand, and gripping the base of her shaft in the other. You are now face to face with her dripping marecock tip, and you plant a wet kiss on the top, smearing the precum all over your lips, coating her urethra and head in your saliva. You hear a little squeak out of the fashionista, as it's clear she hasn't experienced this before.

You take the whole head in your mouth, wondering how it's fitting with the girth. You chalk that up to the potion you consumed before walking in. You run your tongue around her flare, and work your way around the tip. You start to work your way down the dick, taking it centimeter by centimeter. It was pretty big, so you had to make sure you didn't bite off more than you could chew at the moment. Your tongue runs over the vein on the underside of her dick, making sure to move back and forth across it like a guitar string. You feel her convulse a bit above you, clearly enjoying the worship. You thoroughly coated the top half of her dick in a mixture of your saliva and her pre, which you thought tasted a bit sweet...like a marshmallow? What was it with ponies and jizz flavors?

All of a sudden, you are pushed back off of her dick as you look up to see Rarity panting, her chest heaving.

"Not yet. There's something else I want to do. Strip and get on to the table, if you please."

She walks towards her phone and checks it quick, tapping out something as you disrobe, putting both yours and hers on a coat rack near the door. You sit on the edge of the table. It wasn't very wide, about as wide as the desk in your office. It was usually for more events with just 3 or 4 of the regular 6. You hop on the table, letting your legs dangle off of the edge, dick hard as diamonds.

"Are the others going to be here soon?" you ask.

"I'm afraid not," she says, setting her phone on an end table and walking over to you, "So it looks like it's just me and you. All. Alone." she says, progressively getting louder, as if giving a signal.

"Not so fast!" you hear from outside the room, as the door swings open, and a blue pegasus is outside with a smirk on her face, and not a shred of clothing on her body. Rainbow Dash glided into the room, light as can be. After her, followed the rest of the Elements of Harmony. First Rainbow, then Applejack, then Fluttershy, and finally Pinkie Pie. The four of them traipsed in, all naked as the day they were born, but all with a little bit extra. You go down the line, making a list of attributes of each pony standing in front of you.

Rainbow: Thin, boy-ish frame. B-cup breasts, a navy dick just a bit smaller than yours (about 10 inches), decent girth, and egg-sized balls, colored a deeper blue along with her sheath.

Applejack: About the same height as Rarity, thicc thighs and ass (must be the farm work), a 6-pack, slightly bulging biceps. D-Cup breasts and a 12 inch, burnt orange horsecock with baseball-sized testicles that were just a bit darker orange.

Fluttershy: About your height, ass and thighs about as thick as Applejack's, and she had a 13 inch dick with avocado sized nuts. Her breasts were huge, probably like GG cups if you had to guess. Hers were even bigger than Celestia's. Her dick was a calm yellow like her, with a slightly darker yellow for her balls and sheath. Kind of like when the yellow marker gets tainted with the black marker.

Pinkie: She's the only one you could really call "fat", which as a baker who had a thing for sweets, it was obvious. She was a few inches taller than you. Big tits, EE cups probably, and an 11 inch dick. Normal girth. But her balls had to be the size of softballs, easily. They hung very low. Her dick was bright pink with a magenta sheath and sack, in the same coloring trope as the other ponies of this world.

As soon as your character-sheet style analysis had finished, Applejack was the first to speak up.

"We hear that it's a special occasion for the two of you lovebirds, and so we're trying to see what all the fuss is about." her twang was subtle in her toned-down voice, putting on her best "innocent girl" act for you. "We hear you're pretty good in the sack, and wanted to find out ourselves. So why don't you lay back on that table and let us do all of the work."

Your boner somehow got even harder, from both arousal and a bit of fear. Apparently, you didn't lay back quick enough, out of fear or something, and Rarity came over with a bottle of lube in her hand, and squirted some onto yours. Your chest still felt a bit tingly, and you weren't sure if it was the arousal, your heartbeat, or your mind playing tricks on you.

"Lube me up, big boy. I need to feel what Twilight feels."

You rub the lube between your hands as you coat her throbbing horsecock in the slimy fluid, knowing full well where that dick is going. A small bead of pre leaks out and mixes with the lube, serving to slick up the meat further. She squeezes a bit of the lubricant on her hand before tossing the bottle to nowhere in particular. She slathers it all over your chest, making sure to get the area between your pecs.

"What was that for?" you ask, chest still tingling and the cold lube not helping the feeling.

"Give it a few seconds and you'll understand."

As you lay back on the table, your chest starts to tingle even more, and you see it expand a little.

"Rarity, was there poison joke in the potion Twilight gave me?"

"Poison joke? Nooooooo...nothing like that." she says with a stupid grin on her face.

"Good to know." you reply dryly, "Are the other two potions anything weird?"

"No, those are just recovery potions. Those are fine."

Your chest begins to expand, as the flesh balloons out. The sound of them expanding is like filling a water balloon with whole milk. Not thick, but certainly not as thin as water. They keep expanding, and start to droop a bit. They end at about a DD cup. A bit smaller than Rarity's and Applejack's. You lay down on the table now, not really being able to see much over the mountain peaks. You see Rarity's head (the one on her neck) smirk as you hear the sound of her "spreading" the lube out even more. Your view of Rarity is soon blocked by a large orange mass. Applejack suddenly climbs over you, and is soon straddling your body, almost sitting on your dick. You soon feel the presence of the other 3.

While you looked around your head and saw the other 3, Applejack wasted no time and knelt down quickly, and you entered her tight pussy. Her dick flopped on to your chest, acting like a grocery stick between your new breasts. Your mouth went agape and you gasped out and threw your head back in surprise. It hung over the end of the desk, which basically all but sent an invitation to the pink party pony by your head, who shoved her thick horse dick into your mouth, getting the tip in just to start. And as she put her dick in your mouth, you felt the immediate pressure of Rarity's well-lubed dick start to prod at your behind. You grimace as she slides her tip in, opening your back passage ever so slightly with a slight pop.

You hear an "oh boy!" as Pinkie is bouncing to your right, erect dick flopping next to your hand, clearly ready for your touch. You swab your hand over the tip to lubricate it, and you take the marecock in your grasp. You look up at Pinkie and she nods and looks the other direction, signaling you to look at the shy yellow mare to your left, also in a similar situation. You do the same to her as you did to Pinkie, and take a hold of her thick rod.

"Everybody ready?" says Rarity, to a chorus of "Yup"s and a solo "Oh Yeah!" from Rainbow. You take your hand off of Pinkie's dick to shoot Rarity a thumbs-up, as your mouth is somewhat occupied, and replace it, the sticky pre coating your hand. Rarity thrusts in, signaling the start of the gangbang. Rainbow does the same, sliding in to her medial ring, a bulge in your throat already forming. You start to pump at the twin dicks in your hands as Pinkie bucks with it, and Fluttershy lets you do the work as her thick cock quivers in your sticky palm. They're all somewhat rusty with their temporary endowments, but you have a feeling that they use this spell often. Rarity is already completely lost in her movements, as you already start to feel warm pre enter your backside. Her thrusts keep you bouncing up and down, which causes helps out Dash, who is grabbing your head with both hands, her thick cyan dick sliding in and out, getting slick with her pre-cum, which almost tastes like blue raspberry. You chalk that up to the weird thing with pony fluid flavors and just enjoy it.

You can barely handle the two dicks in your body to be able to focus on the pussy lips wrapped around your own dick, as Applejack grinds up and down and back and forth, moving your dick in her vagina like a joystick, touching all parts of her insides and causing you to spasm and leak some of your own precum. Applejack's own pre-ejaculate is leaking between your supple tits, every thrust of yours into her causing her to slide her cock between them. You haven't been able to get a taste, but you have a pretty good idea of what it is. You're also so enamored with the penetration that you can barely remember to jerk off the two ponies to your sides. You are doing okay with Fluttershy, as your left hand usually jerks a dick anyway, but your right hand is a bit slow. Fortunately, Pinkie noticed and is now grabbing your hand with hers and is fucking your hand, wet with silvery precum.

You hear breaths getting ragged from all participants of the fucking, including yours. Dash is fucking your face with a certain intensity that leaves you short of breath, taking small ones as she pulls back, her balls slapping against your forehead as her rod goes down your throat. Rarity is doing the opposite, as she does not want to be the first to burst. Her thrusts are thought-out and intense. She pulls almost all the way out, leaving only her flare, and goes all the way in, which would probably split open your insides were it not for the potion. Her thrusts push you back onto Dash's dick, which her thrusts send you back to Rarity's dick. It's a viciously arousing cycle.

Fluttershy is now gasping and is thrusting the hardest you've felt her thrust, and you brace yourself for her orgasm.

"Eep!" she cutely squeaks, releasing her few ropes of jizz. The first one hits you square on the face and you shift your hand down ever so slightly to get it away, as the next shots hit you directly on your boobs.

Butterscotch, you think. You're just glad it wasn't banana. The sensation of the hot cum on your tits is just what is needed to set you off, as you cum hard into Applejack's pussy. You moan and cry out through the dick in your mouth, the vibrations from which cause Dash to explode in your mouth. She was so deep that most of went straight into your stomach, bulging it out just a bit. She pulls out so you don't pass out from lack of air, and paints your face, leaving thick globs behind around your mouth and chin. As you finished cumming into Applejack, the feeling of being filled set her off, as she came simultaneously from her vagina, splashing the base of your dick, and from her cock, trapped between your pillowy breasts. You felt a hot layer of sperm cover them, as a shot made its way onto your face and into your mouth.

Apples. Duh. you think, savoring the tart and sweet flavor. Your right hand was still moving along the pink cock of Pinkie, who took one hand off of hers and craned your head towards her dick, and blasted you with a shot of hot sperm, like a sexual Super Soaker. You were not surprised by the cotton candy flavor, as it melded with the blue raspberry and apple flavors to create an odd sensation that reminded you of the suicide slushies you would get at the convenience store as a kid. But those thoughts were interrupted as more jets hit your face and a satisfied "ahh" came from the pegasus above you. You kissed the tip of the cock as she finished, the opening a mere inches from your face. But your kiss was suddenly escalated as Rarity pounded hard one last time as her balls slapped your ass so hard and she locked in. You screamed out and Rainbow's tip was suddenly in your mouth like a pacifier as the white unicorn piped your rear full of her thick cum, causing your already bulging belly to balloon even more. You suckled on Dash's tip to help clean it off as the floodgates were slowly draining into your gut.

"That was sure somethin'!" Applejack said as she lifted herself off of you, a torrent of your own jizz falling back on your groin.

"Yeah, that was amazing!" Fluttershy sort-of-yelled.

"Twilight is definitely a lucky girl to have you!" Pinkie said, "but now we have to go and help set up for the party!"

One by one, the 5 cum and sweat-stained ponies came and kissed you on the cheek or forehead, each finding a spot with another participants' flavor on it.

"So you're just going to leave me here?" you ask, blinded by the cum, as you wipe it out of your eyes.

"Not to worry, darling. We're going to let you savor this and someone will be in to check on you shortly. Ta-ta!"

Rarity slowly closes the door as you are left to get your heart rate back to resting as you marinate in the pony spunk of all kinds of flavors. You finally gain the strength to sit up as your belly juts out in front of you, your tits sagging onto it. You feel that this is the closest you will be to being a pregnant woman, and the warmth is sort of comforting.

You hear a knock on the door.

"Come in" you shout, now trying to wipe all of the jizz off of your face.

The door opens and a pink alicorn walks through, wearing just a bathrobe like Rarity was. She must have outfit the entire royalty with them. They were nice robes, after all. She spies your robe and grabs a blue potion out of the pocket and walks over to you.

"Someone just had a good time, didn't they?" she asks, as she eyes up your bloated and sticky frame.

"You could say that. Are you in here to check on me?" You ask, knowing the answer.

"You could say that." she replies, mimicking your tone, "Now drink this."

You unscrew the top of the bottle and take a swig. It's a little alcoholic, but not too much so.

"Now hold still." A bright blue flash comes out of her horn is gone as quickly as it appeared. You suddenly feel a bit lighter. You put a hand up to your face and feel the lack of genetic material coating it. Your rack, stomach, and ass are also clear, as is the carpet and table. You start to feel a tingle in your chest and stomach, and notice that they're both starting to shrink. Your stomach goes back to normal, feeling fairly empty, but not painfully so. Your breasts are almost gone, now down to a B-Cup.

"So, is this all you were sent to do? Get rid of my gut and clean me up?"

"Not just that. I'm here to help you relax a bit after that, it can be stressful. I'm here to relieve some tension in a more traditional sense."

She snaps her fingers, and a foam pad that looks like a thick yoga mat materializes on the table behind you. "Now lie on your stomach and close your eyes. I'm just going to work on your back a little."

You reluctantly roll onto the mat and on to your stomach, resting your head on the pillow with the face hole that also materialized with the mat. She snaps her fingers again and it suddenly smells like lavender and mint. It calms you down considerably as she harshly digs her elbow into your shoulder blade, which hurts at first, but soothes right after.

"Oww-ohhhhhh...." you let out, a knot in your back suddenly dissolving. "Didn't know you were a massage therapist."

"Well, Love comes in many forms. I'm not the Princess of Sex, it just seems like that. Love can involve knowing your partner's sensitive areas and helping to relieve stress and tension. I'll teach you to work similar spots with Twilight, especially when she needs to be preened."

She continues with her massage, getting your shoulder blades, shoulders, lower back, and starts moving down towards your hamstrings and calves. Every push sends a burst of bliss into your body, all of the tension you didn't even know existed in your body melted away. You almost felt like you couldn't even move. You were so wrapped up in your massage, that unknown to you, the two other main princesses walked into the room and were conversing while sitting down. By this time you felt a cool substance on your feet as she had started to rub them.

"This will be the final part of my massage, the most tension in your body lies in the legs, especially the feet. This will help keep them soft, while making sure they don't start giving you problems."

"Enjoying your break, my little human?" you heard, the voice coming from the white alicorn.

"Celestia, when did you get here?" you ask, voice muffled from the face pillow.

"About 10 minutes ago. We wanted to see how you were feeling."

You look up to gaze at the voluptuous princess, "Would it also have anything to do with the fact that both you and your sister are naked, instead of wearing a bathrobe like Cadence is?"

"Took you long enough to notice. And since we're pointing out things you're not noticing, it looks like Cadence isn't wearing a bathrobe anymore."

You turn onto your butt and sit up, noticing that Cadence has ditched her robe and is now starting to get an erection, her magenta phallus bobbing up with every breath she takes.

"So round 2, eh?" you say, sitting up, bones cracking back into place after the massage.

"You catch on quick," Luna says, standing up in unison with her sister, "Now, who gets the pleasure of penetrating your behind? Me, or my beloved sister?"

"What about Cadence?" You say, thinking about which you want in your ass.

"She wants the feet." Celestia says. "That's kind of her thing."

"So I'm guessing that the "massage oil" for my feet was something else?" you ask, making air quotes.

"Duh." says the pink princess.

"I guess I'll take Luna. I'd rather have my throat stretched more than my ass."

"That was actually the preferred outcome," the mare of the night says, "I've wanted a piece of that for a while now." she growls sensually as her dick rises.

You assume the same position as you did with the 5 that were previously occupying your body, but with a few modifications. The three Princesses have moved into position, Luna at your rear with Cadence behind her, and Celestia at your head, her monstrous dick erect above your face, dripping on to your still swollen chest.

"Shouldn't we get me, uh, 'prepped', first?" you say, clearly not wanting the two princess penises to go in dry.

"Oh, we're always lubed. Special spell. But for you, dear sir, I will oblige." Luna summons the bottle Cadence was using and smears it on her dick and your hole, and you wince a bit as she pokes her finger in to swab your insides.'

"Good?"

You nod.

"Well, then. Let the copulation COMMENCE!" she shouts, as her tip penetrates your somehow tight hole. You exhale sharply through your teeth. Celestia flashes her horn and you feel a burst of magic go through your mouth and into your throat.

"This is so you can breathe and take my massive rod." she says, pulling her dick back so the tip is just against your lips. Right before she pushes in, you feel two hands grip your slick feet and push them together, being the metaphorical bread for the dick sandwich with Cadence's meat occupying the middle. You curl your toes around the warm flesh, hoping to bring her more pleasure. You try and move them up and down, but your perspective is kind of off so she starts to move them for you. She moans a bit, clearly enjoying the sensation. You don't get much time to react to her reaction before the marble column known as Celestia's marecock slides into your mouth, the leaky tip already stretching your jaw.

Fuck, she's huge! you think, eyes already watering.

Thanks, you hear her think back. You now wonder when she can read your mind like that. Only during sex and stuff like that. You sigh in relief, only to be interrupted by Luna slamming her thick stallionhood into your hole.

"Are you two," she starts between thrusts, "just going to think back and forth or are you gonna fuck?"

Celestia knows both your answers and pushes in further, putting 3 more inches of dick into your mouth, nearly touching your uvula. You choke slightly from the invasion, but welcome the sensation as you grab both sides of the table so you don't fall off. Luna is hard at work, pumping in and out of your behind, leaking her hot pre all inside of you. You can feel her medial ring just hit your asshole as she wants to go further. Cadence is lost in your feet, pumping away as her rigid cock slides across your soft and supple soles. You tried to keep them moisturized, especially since you went sock and shoeless in the castle most of the time. You feel her balls slap against your heels as you feel Luna's voluminous and dense sack slap against your butt, while Celestia's softball-sized nads hit all over your face, bathing your nose in her musk. The male scent, combined with the scent of clean towels drives you insane and drives you to want more of the aroma.

"Fuck, your feet are good. Shining's are nice, but yours are just so soft!" Cadence cries out, mesmerized by the footjob.

Celestia is now just using your throat as a glorified fleshlight, pumping in and out at increasing speeds. Her medial ring is touching your lips as there is now an obscene bulge in your throat. Her precum does a great job at slicking up her entry as you choke out of habit, but not out of necessity anymore. Her spell made it a-OK for you to take her impossibly large shaft.

Everybody's breaths are getting ragged now as they've been using you like a sex toy for just about 10 minutes. It's a symphony of sweat, precum, and musk as all 3 princesses look ready to burst at any time. Celestia is now going all the way in and halfway out with every thrust. You probably have a concussion from her balls hitting your head so many times, but it's worth it. Her frosting-like semen (in texture and flavor) is pumping into you, and leaking out as a bulge in your stomach has already started to form. Luna is now flaring up, and she looks near. Cadence is also leaking, her hands slipping from your feet every so often as you try and help her out.

To your surprise, the mare of the sun is first to go, and she grabs your head and locks it to the base of her cock, her balls smothering you as they gurgle. Her flare has reached down into your esophagus and is now shooting out her hot load at a high velocity, quickly filling your stomach with the heavy batter. Your belly starts to expand like a water balloon as she locks in place, pumping to get it all out.

Luna is next, and she goes balls deep on her last thrust, holding your butt close to her hips, draining her heavy testicles, rope by rope. Her cum joins her sisters as it expands your belly, now looking like you swallowed a beach ball whole, with even more to cum.

Cadence comes last, crying out as she pumps her last pump and launches a rope over Luna and on to your chest. She removes her hands from your feet and puts them together as she aims her dick at your feet, volley after volley of sticky semen coating the glistening, puffy soles of your feet like a glazed donut. Your body becomes consumed by the whiteness as your unattended dick shoots its load, splattering the chest of Luna, and then raining it down on yourself.

After a solid 30 seconds of synchronized jizzing, Celestia and Luna pull out simultaneously. Celestia and Luna are both spent, nothing dripping out of their cocks or your body as magical seals are placed on your holes to make sure you keep their whole loads in your belly. You look like you're pregnant with two sets of octuplets, and those octuplets are all having twins. Cadence walks around to your face, still breathing hard as she thinks to you, now clean. You grab her still throbbing maremeat like a baby bottle as you suckle the last few ounces of cum out of her tip. This stuff tasted like strawberries and cream. Interesting, but fitting.

Celestia summons chairs for the alicorns in the room, and they all unceremoniously plop down on to them, all four of you sighing as the bell sounds for this round. You try and wrap your arms around your belly, but you can't even manage to get halfway up. You're so full, you feel like you might explode.

"Holy shit." you say, breaking the tension with the first words said in a while.

"Yup."

"Yeah."

"Verily."

"We should do that more often." you say, patting your stomach, sounding like a drum.

"I don't know if I can ever walk again." Luna says, reeling from her anal adventure.

"Well someone is going to have to, I can't live with this gut forever. What time is it, anyway?"

Cadence summons the courage to get up, stumbling from the sensations. She grabs the bottle and your phone, handing you your phone in one hand and uncorking the bottle.

"9:40", she says, "You've still got a bit of time before you have to be upstairs, but we should make you presentable. Now open up." You open your mouth as she pours the pink potion into your mouth, as you feel your energy already come back, and your gut and chest start to deflate. Your ass seems to get a bit thicker, probably some kind of balancing thing from all of the cum. Cadence's horn and hand flash as you feel the cum leave your body, and your breath returns. While that part is getting back to normal, Celestia floats you over to a chair and summons a floating sink to clean and tame your messy hair, and Luna throws a quick dry-clean spell on your robe and moves it toward you, putting itself on as Celestia makes you pretty again. Cadence zaps in some bottles of water as you talk and discuss the night for the next few minutes as you all take a break to relax before you have to head upstairs.

"Alright, 9:55. I should head up. I don't want to upset Twi. Catch you all tomorrow at some point, probably."

"Of course," Celestia says, "I'm glad we got to do this. Maybe we'll have Twilight join us next time." You smirk as she says that, opening the door and leaving the three princesses to devolve into schoolyard gossip about the sex.

You check your phone as you hop in the castle elevator, seeing texts from the rest of the "mane 6" gang as well as the princesses. Lots of well-wishes, lots of suggestive emojis, mainly the eggplant and pointing fingers next to the "OK" sign. Mainly from Dash and Pinkie. And one pops up as you exit the elevator, and it's a picture of Twilight laying down on her stomach, feet up and naked with a couple of peach emojis attached. You don't even need to check the sender of that one, it's fairly obvious.

The door to your bedroom is locked, and you knock to gain access. Twilight magics the door open, and as you walk in, you see a needle fall on to a record next to the door.

" I've been really tryin' baby. Tryin to hold back this feeling for so long... " the male voice starts out. You check the record sleeve and the name "Marvin Haye" is plastered on the front with a brown stallion sporting a beard. You start to think now how much of a parallel there is between your two worlds. You shake it off as you see the purple alicorn mare saunters out of the bathroom, butt naked, as she turns down the music a little for you to take in her form. Just as beautiful as ever, but missing a key feature. She walks up, sans male genitalia, and smushes her chest against yours as you give each other a quick kiss.

"Tonight," she says, in between lip-locking, "it's all for you. No tricks, no swaps, no transformations. Just you, me, and the bed. Now there's just one thing left to do." You walk over to the bedside table, where a silver tray with two vials are on it. One is the amber one from when you first got in this evening, but there was a new one next to it, with the same eyedropper top. The fluid inside this one was a bright purple. "You see, even after our little melding 'experiment' earlier this week that left you with some attributes of mine, our genes aren't compatible. So we've never had the need for condoms unless you didn't want to be inflated, or we wanted to keep the cum for testing or whatever. But with this, it allows us to be more 'alike' each other."

"Twilight, are you saying, what I think you're saying? Do...you...want to h-"

"Yes." she cuts you off, obviously knowing the end of that sentence. "After spending this last week together in the most intimate of ways, combined with the previous years of being together, I would...like to," she exhales slowly and calmly between the words, "bear our children."

You knew that was coming, but it didn't make it any less shocking to hear. "I have so many questions. How are you going to accomplish this? Will I be turning into a pony? Will our child have fur, a horn and wings, or hooves?"

"Those are a lot of questions. First of all, you won't be turning into a pony, either temporarily or permanently. Those two little potions contain little bits of our magic essence, and it will bond us. You'll be getting a little pony DNA, I'll be getting some human DNA. I'm not going to get human ears or whatever, you're not going to grow a tail or any appendages. At most, you'll get a little more muscular, and I may get a bit, I dunno, shorter, I don't know. I'm an alicorn, we're basically unalterable. As for the appearance of the child, we just don't know. This kind of thing has never been done before. You're the first human to romance royalty in this manner. The others have simply just left, or were cast away, or died of old age. There was one a few thousand years ago that kept saying stuff like ">no hooves", even though hooves on a pony are rarer than being a naturally-born futanari, which are like 1 in every 200,000 children. And any female humans were willingly turned into ponies when they wanted to conceive, since we didn't have the technology. So there is just no precedent for this sort of thing. All I know is that it will be ours."

You got lost in "ours", and Twilight had to snap you out of it. "Now come on, lets not debate this too much. You and I both know we were going to, it was just a matter of when." She grabs your hand and walks you over to the table, where she hands you the vial with the amber liquid. On the side was a label that said "His", and you could see that Twilight's said "Hers". "Now withdraw one dropper full of the liquid and don't squeeze it out just yet. I'll do the same with mine." You now realized where this was going, and withdrew the amber liquid. It was the color of a nice apple cider, but smelled a bit like it was alcoholic. Hers was very "grape pop"-esque. "Now squeeze yours into mine, and I'll put mine into yours. Then we shake them up and drink." You squeeze simultaneously, combining the two liquids. They stay separated for the moment, but that's before you both put the caps back on and shake. Instead of becoming a light-brown like you thought they would, they instead swirl together like they were solid. "Down the hatch!" she says, as you two cross your drinking arms and down the vials, each in one go. It tasted like you mixed grape pop with lemonade with a little alcoholic twist. So not bad at all.

You immediately felt the effect of the potion, your body feeling a little bit denser due to the added muscle mass. You suddenly felt yourself get a little taller, you now were just looking right at Twilight's muzzle, which put you around 6'5" or 6'6". She didn't really look any different, since she was an alicorn and all. "Ooh, looks like it did a bit more! Guess we're just about equal now, huh?" You agreed, enjoying the bit of extra height, It would be less of a reach to kiss or whatever now, so that was pretty cool. While you were taking in your height, you failed to notice your own burgeoning erection as your shaft comes slipping out of its sheath. "Why don't we settle down a bit, hmm?"

"That sounds lovely." you say, as you move in to kiss her, going all in on this one. You grab her face with both hands and mash your lips on her snout as her eyes close and her arms drop to her sides as she takes in the newfound strength and force of her lover. You pull off and look into her eyes, the purple iris shimmering as she looks back at you dumbfounded. You grab her and hoist her over your shoulder, putting her into a fireman's carry, and rolling her on the bed as she recovers from the sudden smooch. You take off your robe and throw it across the room onto the chair next to your bed.

"Hold on. Rarity made those especially for us, and she would hate to see that just thrown on the ground like that." Twilight says as she magics the robe onto the hook on the bathroom door. You shake your head but slowly turn it into a nod of agreement as Rarity would be the kind to do that. You slide on to the bed, as Twilight makes a pillow barrier on the headboard as she prepares herself. You lean over her on your knees, and grab hers as you slowly move her legs apart. Her vulva lips were a little puffy and her labia was a little shiny; she was definitely ready to go.

"You know," you start. "This position is almost identical to the one we were in earlier this week, just reversed. Back when having my dick turned into a vagina was the weirdest thing that had ever happened to me. But now it seems like that was just as common as doggy-style. And you never made me feel unsafe throughout the whole thing."

"You know I'd never hurt you." Twilight responds, "And all of these experiences told me that you trusted me, so I think it's time I return the favor and trUUUUU-ohhhhhhh....."

You interrupt her as your tongue slides across her outer lips, teasing them ever so slightly. Having a vagina had really helped you learn how to please one even better, and it was apparent with her moans. You go up and down the outer regions before tucking the tip in to her inner lips, before moving around in little circles. You swipe up and hit her little button and she gasps as her knees buckle and collide above your back. She starts leaking a bit more fluid, but you want her orgasm to come from your thrusts, not your tongue. You hear her panting as you get up after a little bit more oral ministration. "Ass. Are you gonna let me cum or not?" she says, gasping for air.

"Oh I'll let you cum. But it's gonna be from my little friend here, he's really excited to meet you." you say in a cheesy porn voice before magically summoning a bottle of lube. It's nice to be able to use it on yourself this time. You squirt a little on your fingers and probe Twilight's insides as she shivers from the not cold but room temp fluid. You squirt more on your hand and lube up your dick as you get it prepped the old-fashioned way. "Are you ready?"

"As I'll ever be."

You push your flat tip up against her opening and slowly push in, both of you breathing in through your teeth as you feel the sensations of the initial penetration as the tip fully slides in, a slish coming out as the flesh morphs to the shape of your dick.

"I'm going in." you say, as you slide in even more. You slowly go until you hit the medial ring, and it's one of the tightest things you've ever felt.

"Keep going", you hear her say. You slide in more, and after 10 seconds of pushing and squishy noises, you feel your heavy nuts reach her ass as all now-12 inches of you has slid in. You look up and give her a peck on her muzzle as you pull back and start the process over again, making sure to go a bit faster this time. You slide out, leaving your tip in and you pump back into her, going to the medial ring. You pump in and out in that fashion a few times, making sure to really get in there. You slide to the base a few more times, making some paff, paff noises as your hips collide with hers. You're really getting into it now, your thrusts becoming more methodical. You've been looking down at where your dick enters her love canal for a bit now that you don't notice her clearing her throat.

"Eh-hem?" You look up at Twilight, she's breathing a bit heavier and faintly sweating, but is practically at resting heart rate compared to yours. "Honey, I appreciate the slow build-up, but I'm a basically immortal alicorn princess who has an near-indestructible body. You need to be better."

"Hm?" you respond, ragged breaths being confused.

"You know, blow my back out?" You look back at her confused.

"FUCK ME." she bursts out in the "Royal Canterlot Voice."

"Oh." you respond flatly. "You got it."

You slam back into her, going tip to sheath in no time, and your balls slap and bounce off of her plush plot.

"That's what I'm talking about. Now breed this horny mare."

You begin to thrust with the most power imaginable, your hip motion rivaling the ones employed on you throughout this week in your various sexual circumstances. You begin to think about everything she's done for you, how nice it was to spend time with her mentors, her friends, and her in all those times this week. The breakfast, the movie night, and you get so lost in your thrusts that you almost miss her orgasm as her walls tighten, and you feel her fem-cum splash around your dick, making your thrusts even better.

"Twi, I'm not that close yet, it's gonna be just a bit more!"

"I don't care! Keep fucking me, I've got more in me!"

"You're about to have a lot more in you in a bit here!"

"Then fill my womb up with your manly seed and GIVE ME A CHILD!"

She locks her legs around you as you start to flare up, and your thrusts are now artificially short, you're going in and barely getting your medial ring out of her. Your balls are aching with cum and the repeated collisions with her butt.

"Here it comes!" you say, as you prepare your final thrusts as your flare locks in place and you slam your hips down one last time.

She cums a second time, right before you do, and your hips collide as her walls contract in the tightest possible way as you both scream and you feel yourself release. The hot cum floods Twilight's insides, filling up all the way to her cervix and around your dick as the tightness keeps the cum in. You keep pumping, locked into your lover's body as you even see her abdomen round out a bit as your output just keeps coming. You feel the last spurts come out, as your dick begins to soften as your other body parts need blood.

"Don't...pull...out..." Twilight says, her breath heaving and her chest going up and down, glistening with sweat. "Let's...stay like this and worry about it in the morning."

The only response she got was a snore as you had already passed out, head next to her stomach, his arm draped across her torso, and dick still in her pussy.

"Fucking humans..." she eeks out with a smile, before passing out herself, exhausted and filled with hopes of motherhood.