Spike was very nervous. He had a not-so-secret crush on Rarity, and so when he got a letter from her asking if he wanted to join her private basket weaving club, he was ecstatic. At long last! A chance to get close to his dream pony. He sighed wistfully, imagining how Rarity's pussy juices must smell. They must be like expensive perfume, or mint, or rosewater! Nothing at all like that skank Twilight.
Spike inwardly shuddered at the thought of Twilight, her gaping, stinking cunt smelling constantly like rotting fish and earth pony cum. No, rarity is too perfect. She would never be like that.
Pulling on his suit jacket, he took note of a commotion outside. Trixie the sorceress was back in ponyville, showing off her magical powers and making a big fuss. No doubt twilight and the other ponies were there as well. Spike smiled and rubbed his hands together. That meant nobody would notice him sneaking off to Rarity's house.
Rummaging through twilight's bookshelves, he threw dozens of volumes to the floor searching for something. Finally he found it, inside a hollowed out edition of "Geology of Equestria, Volume 6". A fine wooden box, covered in purple velvet. Twilight's private stash. Opening the box he found a bottle of a black fluid simply labeled "Special Lubricant", and he took it chuckling. Surely a little bit of magic wouldn't hurt if he was to win Rarity's heart (and cunt).
Spike stuffed the bottle into his jacket pocket and bolted off toward Rarity's house, passing the crowd of ponies. He was practically shaking with excitement as he knocked on her door. She opened it.
"Oh spike, just the little dragon I was hoping to see today!" She exclaimed happily, grinning broadly. "Come in come in, I'm glad someone accepted my invitation. With the dreadful scene down at the market square I'd thought nopony cared!"
Spike simply nodded, too excited to speak. Alone, with rarity. All day. He could barely contain himself!
They sat around a table for a bit, weaving baskets and chatting.
"Now see, you draw in the twigs nice and tight together, squeezing them so snug that not even a drop of water can get between them. Then you keep... weaving... pulling them together again and again and... um..." Rarity stuttered, a blush appearing on her cheeks.
"Oh my well, I didn't actually ask you here to weave baskets..." She said coyly, looking at the floor. "You see..."
Suddenly rarity was on her knees in front of spike, sobbing. "Please I just need somepony, ANYPONY, to fuck me! Nobody wants anything to do with me, they all say I'm too high class and... arg! I haven't had a thick cock on my cunt for aaaages!"
Spike was taken aback, but quickly recovered himself.
"W-well uh, I can help you with that Rarity!"
"But... don't you just have..." She sobbed, unable to continue.
"A cloaca? Yeah, but..." He smiled. "Don't underestimate me, I know a lot about this kinda thing! I snuck peeks at some of these books Twilight had and...."
Before he could finish rarity was laying on her belly, her ample flank extended in the air toward spike. Her sweet smelling pussy was dripping and flexing of it's own accord, her tail swishing back and forth enticingly. Spike stood between her legs, parting her sex with his scaly fingers. Rarity groaned at even this small action, a dribble of girl juice squirting out into spike's face. It was intoxicating, and soon spike could do nothing but lap at her sweet smelling cunt, sucking on her clit and covering his face in Rarity's liquid love.
Then he remembered the bottle, and got an idea. Uncorking it, he dribbled a bit of the cool fluid into Rarity's love channel, with the intention of giving her a good work over with his fingers. However, the effects of the oil were not exactly as he had intended.
Rarity instantly dropped fully to the floor, her eyes rolling back in her head and a scream bubbling from her lips. Before Spike's eyes her vagina began to close shut, and in it's place a massive black horse-cock grew, and two great swinging balls beneath it.
"Whatever have you done!" Rarity cried, looking at the massive organ between her legs. "What is this horrible thing!"
With a bolt of magic from her horn, Rarity knocked spike over. He lay in a daze on the floor, trying to think of some way to apologize to her, as she got up and loomed over him, massive cock standing ready, her face a mask of anger. But her expression calmed a bit as she looked down at spike. With a swift kick of her hoof she rolled him over onto his back, and held his face down onto the tile with the other.
"My my, whatever am I going to do with you? She asked evilly, looking his butt up and down. Being a reptile, spike had only a single orifice with which to conduct all his business, a small tight hole centered about where you'd expect his ass to be. Rarity eyed it thoughtfully, as Spike's panic grew.
"No, wait, I poop from there!" He exclaimed, but she was ignoring him. Magically levitating him into the air, she impaled his cloaca on her thick shaft, driving deeply inside his unclean hole. Spike moaned softly as she violated him. It felt so dirty, but so right. With every thrust she stimulated both his prostate and his sperm shooting... thingy, and within moments he was cumming, his seed filling his cloaca and acting as lubricant for the increasingly violent fucking.
As Rarity thrust in and out a mixture of cum, urine, and poop slid out wherever it could find a moment of space between Rarity's cock, dripping onto the expensive tiles below them. The pony laughed with delight, clearly enjoying her newfound organ. Giving a great heave, she shoved her huge cock deep into spike's body, reaching the back of his throat, her precum flowing out of his mouth like a flood of slimy drool.
Spike gasped for breath, but to no avail. His attempts are effortless, each longing for breath bringing him closer and closer to darkness, but spike didn't mind, because it was Rarity who was doing it. He blacked out.
Rarity continued to feverishly pound Spike's tight cloaca, her cock how completely through his body, using him like a living sex toy, her climax approaching. She forced spike down into the floor, thrusting so hard his bones began to crack and crumble, his neck flailing around like a bobble head doll with a giant cock protruding from it's mouth. Rarity was mindless, her entire form taken over with lust and desire to fuck. With a final thrust she ejaculated with the force of 50 jumbo jets into spike's half dead body. It was more than it could take, as it inflated like a balloon before finally exploding into a geyser of cum, piss, and shit, that rained down on Equestria in a layer of colors that cannot be described using words of the English language.
The fantastic event marked a new day in Ponyville history, the anniversary of which would be celebrated for hundreds of years.