Twilight Sparkle was beside herself with excitement. She sat on the edge of her massive canopy bed, hooves sorting out rulers, tape measures, a blood pressure cuff, a stopwatch, a marine chronometer, and a bunch of other things even Spike didn’t recognize. “Oh, I can’t wait!” she giggled, bouncing on the edge of the bed as she set the chronometer, her plump pony rump jiggling. “We know almost nothing about the dragon reproductive system! Like… where does your penis come out?”
Spike was lying on his back on the bed, trying to decide how he felt about this situation. “It comes out of the… um, the hole.” He was a big dragon now, experienced with mares and women alike. Why was he so nervous?
Twilight wrinkled up her long older alicorn’s muzzle. “The cloaca, right. Okay. Okay. I can be open-minded.”
“Thanks, Twilight. Way to make me feel comfortable and positive about my body.”
She giggled and flopped down on her belly, facing him. “Sorry. So. Like, where do we start? This is kind of weird.”
Spike nodded. “We’ve known each other for so long, right? Pretty much my whole life. I mean… from a certain point of view… you’re almost like… my mom.”
Twilight rolled her eyes. “Well, with thoughts like that no wonder you’re not hard.” She hesitantly ran her hoof across the barrel-like curve of his broad, scaly chest. “Are you sure you’re okay with this? And… oh my gosh, do you think human Fluttershy and Rarity are okay with it? I didn’t even think!” She rolled on her back and put her hooves on her eyes. “You’re, like, a special ponyamorous threesome, and I’m going to make you cheat and make you feel bad! I’m evil! I’m turning into an evil princess! I knew this would happen!”
“Twilight, no!” Spike rolled onto his side and hugged her, squeezing her lanky yet pillowy body against his muscular one. “It’s not like that! Fluttershy’s married, for buck’s sake. An open marriage, I think. I’m not sure exactly what her husband knows, honestly? It’s okay, though!”
Twilight blinked up at him, her big violet eyes a little dewier than usual. “Are you sure?”
“I’m sure,” said Spike. Spike had grown much, much bigger and hornier over the twenty-five years since they’d moved to Ponyville, and while most of his friends had just gotten older — and the mares curvier and more experienced, much to his perverted delight — Twilight had also gotten bigger and weirder. Her horn, legs and neck were longer, and her head more delicate. She’d gotten thinner in most places — Twilight had always been a pudgy pony, but now her belly wasn’t much larger than the average mare’s. Her rump was still gigantic, though. She wasn’t yet as tall as Celestia, but her rump already rivaled the senior princess’s in breadth and depth and exceeded it in jiggliness. Not that Spike ever stared at royal butts while royal heads were turned the other way, or spent any of his private time thoughtfully considering their individual, unique merits. Nope.
In any event, Twilight’s mane and tail were the strangest things of all — they had begun to float. Not all at once, but in occasional, stray tendrils that she would impatiently brush back down with her hoof or magic when she noticed them. And if you looked carefully, you could see stars in them.
She noticed him staring at her mane and took his cheeks in her hooves, tilting his face towards her eyes. “Kiss me, Spike. I need you.”
Spike leaned down to obey. His thin, pointed dragon tongue flicked against her soft, rounded pony one. Electric sparks of pleasure shot through his head, making the roof of his mouth tingle. His cock began to stiffen, ruffling its way further through the fur of Twilight’s barrel with every beat of his heart.
“Oh, Spike,” Twilight groaned, pressing her body against his, “oh, Spike, it’s so… so… oh my bucking Faust is that your penis?”
Spike jerked away, feeling wounded. “What? What’s wrong with it?” He clutched the S-shaped curve of his thick purple member to his chest.
Twilight reached out, tentatively stroking the smooth, silky surface of Spike’s cock. He stretched out his arms and legs, his mind going blank with the pleasure of her touch.
“Nothing. It’s amazing. It’s beautiful. It’s also as long as your entire torso. Please tell me you’ll grow into this.”
Spike shrugged. “Um, sure, I guess.” He really had no idea. There were a terrifying number of things he didn’t know about being a dragon — like almost everything, really. But now wasn’t the time to think about it. He bucked his lean hips, grinding his cock against Twilight’s soft body. She hugged it against her chest, rubbing one lusciously soft cheek against the pointy, bulb-shaped head.
She smiled up at him, her eyes squinted closed in little inverted ‘U’s of happiness. “Oh, Spikey, why didn’t we do this sooner?” She had a little smear of pre on her flawless alicorn cheek. Spike shivered.
“Aren’t we supposed to do… like… foreplay or something?” said Spike. He couldn’t stop rocking his hips. He reached up, grasping Twilight’s headboard with one big claw, willing himself not to thrust so hard he’d hurt her.
Twilight shook her head. “Don’t stop. I love this.” Then she popped her mouth over the end, lips stretched into an O by his leg-thick shaft. Her little hooves hooked around it, holding him tight so he couldn’t gag her, but she made sweet little gurgling and slurping noises anyway, probably entirely for his benefit. He felt her tongue wriggle against his frenulum. He felt a burning deep inside of him. He used to feel ashamed that he didn’t have large, dangling balls like stallions did, but when he’d finally worked up the nerve to ask Twilight about it, she’d explained that most creatures kept their balls inside their bodies. And if the… um, volumes of fluid he tended to see were any indication, his were huge.
“Twilight… Twilight… oh buck that feels good. Twilight, if I come in your mouth, I’m gonna… Hey, whoa!”
Twilight’s back legs had been questing around his rear end ever since they’d started cuddling; she seemed to have finally found what she wanted. They locked around his narrow middle just in front of his legs, and Spike felt the wetness of her sex against the base of his cock. There was a narrow ridge along the first few feet of the bottom of the shaft, about four inches wide. It had never occurred to him to use that on a mare, but now Twilight was moaning hotly around his cock. She definitely liked it. He hooked a hind claw across her croup, feeling her purple body grinding against him. Her grinding became faster. Passionate. Frantic. Those long princess limbs spasmed around his body, and her pelvis jammed against the base of his cock so hard that it hurt. She stayed there, trembling her way through a presumably massive orgasm. Spike looked down at her. The sight of her elegant, earnest face locked in bliss with her lips straining around the end of his cock drove him over the edge, and his body was rocked, muscles clenching as cum roiled through the long tube of his cock and sprayed inside of Twilight’s mouth. She popped off his cock’s end with a squeak of surprise, mouth overflowing with dragon cum. But Spike wasn’t done. Those massive balls deep inside of him spurted three more times, and by the time they were empty, Princess Twilight Sparkle, the greatest hero in the land, was soaked in cum from the tips of her ears to the base of her neck.
“Mmmmm. Cinnamon-y,” said Twilight, licking her lips and pushing her matted mane out of her eyes. Threads of cum stretched between her eyelashes.
Spike giggled, then covered his mouth. “Aw, Twi, I’m sorry! I didn’t mean to do that to you!”
Twilighted waved a hoof dismissively. “No, it was fun! Fun in a gross, gooey kind of way but still fun! Can you help me wash it off, though? I’ve got a ribbon cutting tomorrow and I’ve got to be G-rated for it.”
———
Twilight teleported in a few dozen gallons of water from a hot spring in a nature preserve outside Vanhoover and eased herself into the steaming water.
“Oh! Oh, that’s nice. This bathtub is the absolute best thing about this palace.”
Spike had to agree; he’d been sneaking in for eight-hour bubble baths every time Twilight was out of town since they’d gotten the place. “You said it was the green shampoo?”
Twilight nodded, then held her breath and ducked her head underwater. “Yeah. Hurry up. Cum gets stickier the longer you leave it.”
Spike paddled over through the swimming-pool-sized bathtub, and sat up to squirt the sparkling green liquid into his palm. Twilight rose up out of the bath next to him, dripping water and cum like the cutest, smartest, all-around best sea monster. Spike began to rub the shampoo into her fur and mane; dried cum came away like it was nothing, leaving Twilight clean and sparkling. “This stuff really works!”
“Zecora made it for me. I had a rough transition from when accidentally having cum in my fur at work the next morning went from ‘mortifying’ to ‘potentially civilization-destroying’, but I got through it okay. Ooooh! Spike you give amazing scalp massages! I need to start renting you out.”
Spike blushed a little. “Thanks. It’s the claws.”
Twilight peeked a large violet eye open cautiously, reasonably confident of not being stung by shampoo, and rolled it up to look at him. “Does it change things for you, thinking of me as a sexual being?”
Spike shrugged, claws rubbing gently at his friend’s scalp. They’d already gotten rid of the cum, but he liked the way massaging her head made her squirm. “It’s nothing new to me, Twi. Though I never thought we’d… well. We did.”
Twilight grinned and nodded. “We did!”
“I really like you, Twilight.”
She nuzzled his hand. “I really like you too, big guy.”
Spike’s eyes narrowed. “You’re not going to start calling me that, are you?”
“I might.” She rose up slowly out of the bath water, thick purple bubble butt parting the soapy waters like the dawning of the golden age of lovely mare behinds. “Want to see how much of you we can fit inside of me?”
Spike gulped and looked down as his cock did its own rising-from-waters bit. “Water’s terrible lube, Twilight.”
Twilight snorted and hiked her rump fully out of the water. Rivulets rolled down over her short glossy fur, making her coat gleam in the light of magic lanterns. “Thanks, mister sexpert. In all my years of fucking I’d never noticed that myself, thanks for filling me in.” She levitated over a mason jar full of goo, labeled ‘animal birthing agent’ in magic marker on tape, and slammed it down on the counter. Spike, however, was so mesmerized by Twilight’s backside that he barely flinched at the noise. It wasn’t like he’d never peeked before; he just always tried not to stare. Tried being the operative word. Twilight had such a plush rump, such voluptuously pouty pussy lip, and such a perfectly puckered ponut that he could look at them for hours without a care entering his mind.
“Hello. Hellooooo, Equus to Spike. Are you reading me?”
Right. She might like it if he did something besides look. He swam up behind her and slid his claws across her rump, gently pulling the cheeks apart. The motion pulled open her ponut and pussy a little, and he grinned toothily. The pussy winked at him. “Damn, it’s good to be alive.”
Twilight slapped her wet tail against the side of his head. “I’m glad you like staring at my ass, Spike, but compliments aren’t going to get me off. Lick, please.”
Spike chuckled, and pressed his semi-rigid dragon beak against the folds of twilight’s sex and inhaled. Dragons had a poor sense of smell, but he still enjoyed the pungent sweetness of Twilight’s mare musk. He wished he could get a whiff of it with his dog nose, though. There were nuances in there he wanted a better smell of. His pointy tongue flicked across Twilight’s outer lips, and her thighs shivered.
“Oh buck me, that’s more like it,” murmured Twilight.
Spike giggled happily and ground his nose against her opening. He slid his tongue against the bottom of Twilight’s sex, where the lips pouted out the furthest, and pushed the proud flesh aside to find her clit. Twilight bucked his hips against his face so hard that his nose pressed into the opening of her tunnel. “Wait! I have an idea! Spike, beakfuck me!”
Spike stopped licking. “But Twi, It’s really big, and… oh, yuck!” Twilight had levitated the jar of lube up and tipped it out over his snout.
“No buts, big guy. Your beak’s about his thick as your cock, but nowhere near as long.”
“But it’s pointy!”
“It’s ribbed for my pleasure. Get in there.” Her telekinesis grabbed him by his crest of spikes and dragged him forward, pressing his beak in against her pouty purple lips. It didn’t look like it was going to fit. He held back against the tugging on his spikes, afraid that he would hurt Twilight, but she was insistent. She yelped as he finally popped inside, hot, powerfully muscular flesh tight around his snout. It was slimy, wet, and silky smooth, and it felt so good that he didn’t even care that he really hadn’t breathed in enough air before he went in. He gripped her by her thighs and pushed his face in deeper, her cheeks squishing against his cheeks.
“Spike… oh, Spike, it feels so…” She thumped her hoof on the edge of the tub, unable to find any word in her massive vocabulary to adequately express her delight. But Spike was starting to feel light-headed. He thumped on her thigh, and pulled back, only to find himself held in place by vaginal muscles and magical force.
“Oh, you’re not going anywhere, buster. Here, let me get you more air.”
Sweet, warm, oxygen-rich air flooded his nostrils. Really, really warm. Kind of hot actually. Kind of extremely hot. Spike let out a muffled yowl, and yanked his snout out of Twilight with a pop.
“Hot! Hot! Hot!” yelped Twilight, who slid off the edge of the tub and plopped her butt into the water with a splash. “Oh, I forgot about how much waste heat teleportation generates! Bad idea! Bad idea!”
“Are you all right?” asked Spike, rubbing at his slightly scalded nose.
Twilight nodded and cast a cold spell on his beak. “This is hard. I mean, you’ve had sex with mares before, right? How do you do it?”
Spike rolled his eyes. “Normally we use my penis.”
Twilight fluffed her wings slightly. “Well. Do you know what I think?”
“What do you think?” said Spike, sliding through the bubbly water for a kiss and embrace.
“I think you’re probably smaller as a dog. You’re smaller as a dog, right?”
“My penis is smaller, but the rest of me is the same size.”
“Then I’m calling in sick tomorrow. Luna can cut a darn ribbon for once. Pack your bags, Spike. We’re going to the human world!”
The desk clerk at the motel didn’t look up from his phone’s screen when the door opened.
“Excuse me,” said a polite female voice from above him. “Does this motel allow pets?”
The clerk raised his head and found himself face to face with a pair of breasts whose bra-size would take an array of letters from very deep in the alphabet to describe. Except that the bra she was wearing was several sizes too small and dug into her breasts. Her black T-shirt was also much too small; the cartoon on the front appeared to be about two scientists at a blackboard, but was stretched to the point where the lettering was completely illegible. Epic levels of underboob mostly covered a belly that managed to combine lush softness with the saucy vertical furrow of strong abdominal delineation.
“Hellloooo. My face is up here!” The fabulous breasts belonged to a six-and-a-half foot tall lavender-skinned amazon. A slightly pudgy amazon, but an amazon nonetheless. Also her hair was moving on its own.
“Buh?” said the clerk.
“Does… this… motel… allow… pets?” said the amazon, who was beginning to look cross.
“N-no?” said the clerk. He heard a noise halfway between a grunt and a growl, and looked down from the amazon to find himself face to face with a purple-and green Great Dane the size of a small horse. “I mean yes. Yes we allow pets. How long will you be staying?”
———
Twilight kicked the motel room door closed behind her. “Ugh, why is the mirror still putting me in teenager clothes! These don’t fit at all!” She reached behind her back and under her T-shirt, fumbling with the hook of her bra. “Stupid fingers. I can never work these things. Little help?”
Spike raised his paws helplessly. Luckily, the bra strap immediately gave way; she shrugged out of it and then pulled off her shirt. Her breasts bounced like Pinkie Pie getting off work — they were huge and smooth and perfect (aside from the pink lines that the edge of her bra had left), hanging almost to her navel — not from sag, like Fluttershy’s breathtaking udders. They were just that big. Honestly Spike preferred the Flutterudders but he wasn’t about to complain. His tail started wagging, and he jumped up on Twilight as she was still wriggling her massive ass out of her jeans, paws on her tits, licking her face and her long slim neck.
“Spike! Down! Get off! Off!” She shoved him away and he landed on his back on the motel room’s hard little bed.
“Sorry. I don’t know what came over me.” His tail was wagging furiously.
Twilight grinned. “I do.” Her eyes drifted down his long body, over the barrel chest and the slim belly to the nine-inch peg of pink dog cock pulsing between his hind legs. “Oh, yes, that looks much more manageable.”
Spike snorted. ‘Manageable’ was one thing neither Fluttershy or Rarity had ever called him. In any context. He hadn’t seen a lot of human penises, but if the human clop he’d looked at was any indication, a human male’s hardware was half to a third the size of a pony cock. And that was an average pony cock, not big stallions like Mac or Shiny. Not that he ever looked at them. Twilight pushed her jeans and panties off and slid into the bed next to him, interrupting his thoughts about dicks. Her hand ruffled his chest fur, and he leaned his neck down so that he could lick at her fingers.
“So,” she said. “Here we are.”
“Do you feel okay?” said Spike, wriggling over so that her breasts smooshed up against his side.
“A little weird. Dogs are nonsentient animals in both universes… I mean, kissing a dragon, it’s not that big a deal. Kissing Winona? Kind’a freaky.” Twilight reached under her right breast and lifted it up on top of Spike’s rib cage. “Sorry. More comfortable that way.”
“Don’t worry about me,” said Spike, setting to work on licking Twilight’s jiggly purple boob, smearing the smooth flesh with glistening dog spit. “Anyway,” he said between licks,” I’m much hotter than Winona.”
“Oh! That tickles,” squealed Twilight, squirming away from him onto her back. Spike barked and hopped on top of her. Twilight’s massive amazonian jugs lay spread out before him, flattened slightly by gravity, but still pert and jiggling like naughty novelty gelatin desserts. He licked them both over and over, his slobber gleaming on them in streaks.
“Don’t stop,” she groaned, pushing her breasts together with her arms, squishing them up around Spike’s big muzzle. Spike rubbed his muzzle deep into her cleavage, inhaling the clean smell of her skin. His hips were churning of their own accord, and soon enough he felt wiry hairs against the shaft of his dick. He pulled back and aimed down, and found himself enveloped in warm, wet, inviting softness. He moaned and thrust his hips forward.
“Ah! Careful!” shouted Twilight, her nails digging into his shoulders.
“Am I hurting you?” asked Spike.
“No! No! Keep going,” said Twilight. “But slowly. I forgot how tiny human genitals are.”
Spike slid in and out of Twilight as slowly as he could bring himself to. Twilight’s pussy was looser than Rarity’s or even Fluttershy, but he was a big dog, and its sweet walls clung to him as he pulled in and out.
“Hey, Spike,” said Twilight, grinning. “Foreplay… unf… Ever hear of it?”
“Gosh, that’s a big word Twilight,” said Spike with mock earnestness. “What’s it mean?”
“Something we don’t do, apparently.” She wrapped her long, thick thighs around him, Pulling him close. The base of his cock was swelling, mashing against Twilight’s pussy. “Knot in me.”
Spike gulped. “But your body isn’t ready! It’s huge, Twilight, I’m telling you.”
“I was born ready, Spikey-Wikey. Give it to me! Before it gets too big to fit it in!” She hooked her legs and pushed on his lean doggy ass with her heels. He took a deep breath and pushed, straining his fat, pulsing knot against her pussy’s hungry little opening. Twilight wailed with pain and pleasure as he popped inside, inner lips in a tight ‘O’ around the base of his cock. The pleasure of being fully enveloped rippled through his body and the knot swelled to the size of one of Big Mac’s hooves.
“Wow.” groaned Twilight, stroking Spike’s ear.
“I don’t think either of us is going anywhere for a while,” said Spike.
“No place I’d rather be, buddy.” The knot prevented any kind of fast or vigorous thrusting. All they could do was move together gently. Spike lost himself in the feeling of Twilight’s body — the gigantic tits cradling his chest, the softness of her belly against his, the strength of her thighs around his middle. Nails raked down his back, leaving lines through his short fur. “You wanna try that kiss we were talking about earlier?”
Spike nodded. The temptation, being in a dog body with a dog brain, was to just start slobbering away, but he had a lot of experience kissing human women and knew what they liked. He lapped gently at the full length of Twilight’s plump purple lips, flicking at them, until tingles of pleasure started to shoot through his whole mouth. She opened, and he slipped his tongue inside of her, the massive piece of meat filling her mouth. She moaned around it and sucked on it sweetly. But soon she slid her hands up his neck, wrapped her thumbs around his ears, and pulled his head back.
“That was… amazing…” she said, pausing to grunt every time the end of his cock hit the mouth of her womb, “but I don’t… oh, that’s nice. Harder. I mean, I don’t… feel like… I’m getting the full… oh yes… the full dog experience.”
Spike blinked. “You want me to…?”
“I want your slobber, Spike.”
Spike’s tail began to wag furiously. “You got it, Twi!” He leaned down, and his tongue slapped across the side of her round, purple cheek, leaving a smear of drool behind it.
“Oh, Spike!” Twilight wailed, her hips jerking to slam her pussy against the root of his cock. Since he was getting good results, he doubled down, his tongue hitting Twilight’s face with wet smacking noises over and over. He licked as much of her as he could reach, which with his colossal prehensile slab of dog tongue was a lot of places. Over the next ten minutes, Twilight was covered in ropes of bubbly dog drool from the tops of her tits, all along her neck, across her round cheeks and high forehead, even behind her ears and into her hair.
The pumping of her hips grew faster and faster, losing its rhythm as it gained passion, and at last she came, pussy clenching his dog cock. Spike pulled back his tongue and gritted his teeth — Twilight’s pussy muscles were just as amazon-like as the rest of her, and the knot kept him from being squeezed out. It hurt, like his cock was going to pop. But it hurt good. The next thing he knew, burning pleasure was rolling out from his balls, and cum was pumping through his cock, rapidly filling what little free space there was in Twilight’s pussy. Spike threw his head back to howl. He kept coming for a long time — it was what dogs did, and he’d been pretty worked up, as well. By the time he was done, Twilight’s belly was noticeably harder and rounder, jigging softly against his tummy whenever she moved.
“I love you, Spike,” said Twilight, reaching up to stroke his ear.
“I love you too, Twilight.”
———
Spike lay flopped on his side on the bed, staring at the motel TV. The remote was next to him, wet and cratered with gigantic tooth marks — it had taken him quite a bit of effort to figure out how to work the thing, but Twilight had been out shopping an awfully long time and he was bored. He liked this show, though.
“The pyramids are constructed with far too much precision to be the work of primitive people…” said the TV.
Suddenly Spike froze. There was movement on the second-floor walkway outside. He flipped over, his lips rolled back from his teeth, and he began to growl. The lock mechanism clicked open. He began to bark, so loud it made the window glass vibrate. The door swung open. Oh, thank Faust, it was Twilight. He bounded over to her, and leapt up, paws on her shoulders, licking her face over and over.
“Spike! Down! Bad dog!” scolded Twilight, setting down her half-dozen shopping bags.
Spike backed off, and whimpered. “Sorry. Again. Instincts.”
Twilight smirked. “Uh huh. So how do I look?”
“Oh, wow.”
Twilight had left the motel room squeezed back into what was left of her teenager clothes, and Spike had thought he couldn’t imagine anything hotter than Twilight hanging out all over the place, soft flesh pooching out around too-tight hems. But after hours scouring plus-sized women’s boutiques and some very, very specialized bra shops, she looked utterly amazing. She was wearing a blue shrug and a well-cut purple blouse that called attention to her broad shoulders and narrow waist. The neckline would have been daring on another woman, and it still technically was — it showed miles of cleavage, but Twilight had miles and miles beyond that. She was wearing tight black slacks that showed every curve of her broad pelvis, magnificent hips, muscular thighs and tapered calves. Knee-high, high-heeled boots capped off the look. But the best thing of all was her bra: it was a miracle of engineering, lifting her colossal breasts up off her belly and giving them a lilt and perkiness like they were a 19-year-old’s B-cups. Spike preferred droopy breasts, but it was breathtaking to see them just… sticking out like that. He unconsciously began to hum The Commodores’ “Brick House”.
“Spike, why are you making that horrible noise? Do I look bad? Is it too much?”
“Oh no,” said Spike. “You look amazing. Perfect. I just want to…” He blushed. “I want to tear those right off of you. With my teeth.”
“Don’t get any ideas. I’m going to stash these so that I have something decent to wear next time I go through the mirror.”
“Aw man!” said Spike, slumping in disappointment, tail flopping to the floor.
Twilight laughed and scratched him behind the ears. “Don’t worry, I got clothes for you to mess up, too. I’ll get changed; you watch your… Spike, what in Faust’s sake are you watching?”
“These busts depict Nefertiti as having an elongated skull, a clear sign of extraterrestrial DNA,” said the TV.
“The History Channel! Apparently the human world has been in contact with aliens from other worlds for thousands of years! I mean besides us.” He paused thoughtfully. “You’d think they’d mention it more often.”
“Those are lies, Spike. There are no ancient astronauts; I already looked into it. It’s a bunch of lies made up by people who think that everyone from a time before digital watches and microwave ovens was a drooling moron.”
“But… but Nefertiti’s elongated skull!”
“That’s a hat, Spike. Everybody knows that’s a hat.”
Spike scowled. “Fine. I’ll watch the news. There won’t be any lies on that.”
“No!” said Twilight, picking up the slimy TV remote with her fingertips and turning off the TV with it before tossing it into the corner. “Lie on the bed and fantasize about me while I get changed. I’ll be out in a few minutes.”
———
It took more than a few minutes, but it was worth waiting for. Twilight stepped out of the bathroom door and tossed her head. Her hair, for once, had its act together, and hovered behind her in a perfect curve, glittering with stars. She was wearing that magic bra again, or one very like it — it was lacy and pink, her soft lavender skin and massive purple nipples showing through the barely-there fabric. She wore a babydoll nightgown, equally filmy and transparent, that came down to mid-hip in back, and barely to her navel in front. On her feet were spike-heeled stripper shoes so precarious she wobbled a little as she walked — the kind of shoes that really weren’t meant to be worn while standing up. Best of all was a pair of tight, soft, crotchless cotton schoolgirl panties with a little pink bow on the front. Did they match the rest of the outfit? No. Did he love them? Yes.
“What do you think?” said Twilight.
“I think I took one look at you and my knot’s already up,” said Spike. He rolled onto his back to show Twilight the sorry state he was in. His long cock pulsed over his belly, bobbing slowly and drooling pre-cum from the tip. His knot rested on his pelvis, keeping his cock at a forty-five degree angle from his body.
“Oh, you poor thing,” said Twilight, running a single finger across her lower lip.
Spike whimpered.
Twilight climbed up onto the bed, holding her breasts in check with one arm, and ran her palm down Spike’s neck, over his collar, and across the hard, prow-like arch of his chest. Her hand lifted, rising over his belly and cock, and Spike whined like a puppy, thrusting his hips frantically up towards her. She lowered her hand, bringing it to rest on his huge, egg-like balls, and his tongue promptly fell out of the side of his mouth.
“Do you like that, big boy?” said Twilight, scratching the short fluff between his balls and his asshole.
“Nnnnnnggghhh,” said Spike.
Twilight giggled. Teasing fingertips traced the curves of his balls, his asshole, the backs of his thighs and the bony angle that passes for an ass on a dog.
“So this… this must be what foreplay feels like,” said Spike. “It’s… oh Faust… It’s not bad.”
“It isn’t, is it?” Twilight tried to lean down to kiss Spike and immediately encountered problems. “Augh! Stupid boobs!” She took her hand off Spike to reach behind herself and remove her sexy bra. Her breasts slumped once the series of hooks on her back were unfastened, and she slid it off and tossed it aside. “I have serious issues with how the mirror is re-interpreting my body as I develop into a mature alicorn, Spike.”
“Who designed the mirror?” asked Spike.
“Starswirl the Bearded.”
“Was he straight?”
“Most biographies agree he was bisexual.”
Spike grinned a toothy canine grin. “Well there’s the source of your problems.”
Twilight rolled her eyes. “Thanks for diminishing my respect for my idol, Spike.”
Spike’s tail wagged. “Any time.”
Freed from her bra, Twilight’s breasts were able to slide along either side of Spike’s keel-like ribcage, so that they could reach each other’s mouths to kiss. Twilight ran her hands over Spike’s fur as they played with each other’s tongues, licking and sucking. After a while, Twilight began kissing her way down his chest and over his belly. Spike’s muscles began to tense as her mouth neared his cock, but to his surprise she pushed it aside and skipped it. He raised his head and whimpered curiously as she licked at the hollow of his thigh. Then she nosed under his balls and everything became clear to him.
“Oh Faust!” he moaned, arching his back as the princess of friendship weighted one of his heavy purple balls with her tongue.
“Spikey likes it?”
“Don’t stop,” said Spike.
Twilight sucked a jumbo-sized canine testicle into her mouth, lips wrapped around its base. She sucked on it for a while, enjoying the smooth texture and Spike’s rapid breathing, then let it go with a ‘pop’ and switched to the other one. Before long Spike’s balls were soaked in spit, and Twilight was longing for the feeling of a cock in her mouth. She ran her tongue over the knot up the shaft and popped her full purple lips over the blunt, pointed end. Spike whimpered and hooked his paws over her head. He kept them there, feeling it move up and down as those lips slid over his shaft, shallowly at first, but then taking more and more until his tip was in her throat and her lips were kissing the edge of his knot.
Spike luxuriated in the sensation of Twilight’s mouth on him, eyes rolled up into his head. Pleasure built in him, his balls tightening, cock burning, pulsing, climax rushing towards him like an out-of-control yak cart. Then suddenly Twilight’s mouth was gone. Spike yelped, and looked up, but he needn’t have worried. In one quick movement, Twilight was squatting on top of him, guiding her shaft into her tight, hot human pussy. Spike groaned and clawed at her long, massively muscular thighs, hips thrashing. Twilight slammed her wide, cotton-clad haunches down into him, impaling herself so deep that Spike’s knot mashed against her pussy lips. Her breasts flopped magnificently, the heavy, pendulous things literally bouncing off her chin in her enthusiasm. Spike held back as long as he could, but far, far too soon he felt his cock filling with seed, filling her pussy, squirting out around his knot and onto his abdomen. He howled, nerves pulsing with pleasure.
“Was that good? That was really good, huh?” said Twilight, grinning.
“You didn’t come,” gasped Spike.
“It’s okay,” said Twilight cheerfully. “I don’t have to come every time.”
“It’s not okay,” Spike grumped. “It’s not. I still have a tongue. Get on your back.”
“But I’m full of your stuff!” protested Twilight.
Spike twisted out from under her, put his massive paws on her shoulders, and pushed her to her back. “I’m a dog right now, Twilight. I will literally eat anything with protein in it. Pumps in the air, hot stuff, we’re doing this.” Some small, homophobic part of himself hesitated at the prospect, but for the most part he’d left that kind of squeamishness behind with his dragon body. Anyway, Fluttershy had played him a funny song about this sort of thing at one point, and according to that, licking his own cum out of a female’s pussy was definitely not gay.
Twilight giggled and gripped the backs of her knees, pulling her feet up near her head and spreading her magnificent ass for him. Spike took his time, starting by licking her magnificent ass and sexy schoolgirl panties — the contrast in texture between skin and fabric sent fireworks of delight through his licking-obsessed canine brain. Only when the panties were soaking wet and sticking to her purple skin did he move on to the gap in the crotch of her panties. He inhaled deeply — here was that good whiff with a canine nose that he’d wanted earlier. He could easily sort out the musky, spicy smell of his cum from the unusually sweet smell of Twilight’s pussy. Hazelnut, vanilla, citrus notes. He dove in.
He started with Twilight’s pubic ruff — more wiry than a pony mare’s fluff, but still appealing to his sensitive tongue. When it was clean and soaked to her skin, he moved on to her demure little human snatch. The outer lips were silky, the inner ones even more so. He ran his tongue from her asshole to the top of her clit, clearing his cum away in one sloppy slurp. Twilight convulsed with pleasure as he hit her clit, but his floppy tongue wasn’t much use for the grinding and circling most females wanted there, so he pushed his big, wet nose against it and slipped his tongue into the narrow opening of her cunt.
It was hot and wet and slimy in there. Still filled with dog cum even after so much had dribbled out, it squelched and squished as Spike licked every wall, crevice, and curve, all the way up to her cervix.
“Spike!” said Twilight, clutching his head with her thighs and grabbing his ears hard, mashing his muzzle into her pussy. “Don’t stop! I order you, as a princess and a friend, not to stop.”
Spike didn’t really want to. She tasted and felt so good! Her thigh muscles pressed harder and harder into his skull until it ached; her nails dug into his ears. He slurped and slobbered, wetting the sheets and the mattress, working until his tongue burned with exhaustion, then steeling his will and licking more. Many minutes of this later, her pussy clenched around his tongue, squeezing it, hot juice squirting out across it. He lapped at Twilight’s spasming pussy until she got too sensitive and pushed him away. His tongue slid out of her with a pop. His muzzle fur was matted with pussy juice and his own cum. He rose to all fours, and climbed up over her so that he could kiss her They kissed until they both ran out of air, then took a gasping breath and started again.
———
Several hours and three more tumbles later, they were lying on the bed, Twilight spooned with him, his sheath nestled in between her buttocks. He wasn’t getting hard, and if that wasn’t doing it for him, he was done for the day.
He sighed sadly and stroked Twilight’s breast with a paw.
“What’s the matter, Spike?” said Twilight, taking his big paw in her dainty hand.
“We’re really good together, aren’t we?” he said.
“We are. Why does that make you sad?”
“Because things are complicated now. I mean, what about Rarity? And Fluttershy? I love them, too. I don’t know what to do.”
Twilight patted his paw. “Humans don’t live forever, Spike. Dragons do.”
“Do we?” That was a new one.
Twilight nodded. “Well, not exactly. I haven’t been able to get much information out of Ember, but every dragon death she’s mentioned that I’ve been able to confirm has been by accident or battle. If dragons die of old age, it seems to take so long that something else is bound to get them first.”
Spike felt a cold, raw feeling in his heart. “So you’re saying don’t get attached?”
“I’m saying the exact opposite, Spike. Love the mayflies while you can. I’ll still be in my prime a thousand years from now. We’ve got time.”
Spike nestled his muzzle in the crook of her neck and shoulder. Twilight reached up to scratch him between the eyes.
“That being said,” she continued, “there are details to work out. You need to see your girlfriends more often, and I can’t have my prized dragon assistant with decades of training sneaking off at random when I might need him. Plus Fluttershy has a family whose feelings need to be considered.”
Spike began to stammer. “Twilight, no. You aren’t going to… please don’t make this into…”
“No, Spike. It’s too late. We’ve got a friendship problem, and I’m going to fix it.”
Author's Note
Yep, sequel hook. I guess this is going to be a trilogy. A trilogy of ridiculous dogfucking clop. 
