Author's Notes:

This second guest chapter is written by Rustle+my+Jimmies. And, oh wow, he wrote one even darker than Kaidan...

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Charlie's Sexcellent Adventure - What happens when a equine that doesn't belong to Equestria, winds up in Equestria?.

Story Themes: TF, feral horse, Rape, severe mind regression, incest, light water sports.
'Dark' rating: 8 / 10
Clop?: Uh, for some of you sickos, probably.

Charlie watched as those two-legged things in the leathery, spurred shoes and the wide-brimmed hats opened the gate and trotted towards him. He stood out in his open field of grass. He was alone, of course. Not many of the others made it through the last couple cold months. But he did.

The feeders, and sometimes back-riders, were closing in on him. He could hear them communicating with those silly sounds that liked to come out of their tiny mouths. It sounded as strange as those giant, flying pieces of metal in the sky. They were so loud, they tended to spook him and his fellow creatures. Something about it seemed so unnatural, yet it happened so often. He wondered what sort of creature those things were.

“... So, doc, we’ve reached an understanding, I reckon?” the-one-who-feeds-Charlie said, taking off his topper.

Charlie craned his head toward the things, watching the strangeness of the creatures. Instead of both having those goofy head-covers, only the one Charlie recognized was wearing one. The other was ganglier. And uglier. He stood at least a head taller, and, out of the side of his mouth, a snaggletooth pulled at his lips. The usual, strange clothing that those things wore was instead a long white blanket. Like the ones that the one who fed Charlie liked to drape over him in the winters. But it draped over his legs and had a bunch of pockets in the front. Instead of soft, blue eyes, this one’s were yellow. And his pupils were red like the barn. Glaringly red.

“Of course, my friend,” the thing in white said. “If I’m anything, I’m a man of my word. Social compact is absolutely imperative to society. Without it, how would anyone expect to get things done!” The noises he was making sounded happy, and the way his lips contorted and eyes beamed, he looked happy.

The one who rides Charlie on the weekends spoke up. “But, ya see, this is my last stallion. I lost all the others from colic, and I’ve only got a few mares left.”

“You have nothing to be worried about,” the ugly one said. “I have no interest in ever hurting your horse. In fact, I think he’ll be a very happy horse once this is all over with.”

The familiar one scratched his neck and contorted those two little patches of hair above his eyes. His tiny eyes were even more scrunched up than usual. “I understand, doc, it’s just that I love this horse. I’ve had him since I was 15, and it just don’t feel right givin’ him up all the sudden. He’s like a brother to me, ya know?”

He patted Charlie on the side of the necks and rubbed behind his ears, just the way Charlie liked it. Charlie liked him. It made him sad to see the little thing so sad. He had spent most of his life with him. All of it, actually.

Charlie licked his friend’s face to make him feel better. That always made him feel better.

“Mr. Marshall, you shouldn’t feel bad about losing a friend. In fact, with the money I’m paying for this horse, I’m sure you could raise a whole herd of foals just like this one.”

The one who feeds Charlie and plays with him and rides him chuckled and kicked at the ground. “I guess you’re right, doc. I guess you’re right.” He turned his attention back to Charlie. “Now, Charlie,” at this Charlie’s ears perked up. That was the name he was given. “I just want to let you know that this is for the best, and I know it may seem like it… but I love you, ya stupid horse.” The thing smiles and hugged Charlie’s snout. “I’ll always love ya.”

Charlie could tell his friend was very sad today. It would take something more than the usual to cheer him up. Charlie lifted his head and bit down on the creature’s hat, taking it and lifting it high above his head. His friend loved this game. They liked to play it when they were younger, and every time they played it, his friend would pretend to be angry, and Charlie would pretend to eat his hat.

Charlie loved that game.

The one who cares for him, though, didn’t even move break his expression. “You can have it, Charlie. To remember me by, right?” He patted Charlie on the head and turned toward the ugly one. “Okay, doc, you can take him. But promise me one thing.”

“Oh,” the one with strange eyes and a snaggletooth said, beaming at me. “What would that be.”

Charlie’s friend kicked the ground and put his hands in his pockets. “Make sure you make him happy. Happier than I ever could.”

The ugly one took a step closer to Charlie and patted him on the nose. “I wouldn’t worry about that. Something tells me he’s going to be the happiest stallion in the world.”

Charlie was lead away from his home.

Nothing smelled familiar. The aroma of grass was pungent, and the feeling of home was completely replaced by an alien sense of being lost. And with the cracking open of his eyes, the feeling of being misplaced only doubled. He was in an open field, but not his. There was no long, white fence to keep him from wandering off, and there was no big red barn to guide him to his oats and hay. It was just an empty field a dense layer of foliage across the way.

Charlie stood up.

And he fell back down on his flank. He craned his neck to the side to see what was wrong. Something was very wrong. He neighed at the realization that he was small. Tiny-small, like one of those four-legged creatures that barked at Charlie whenever he got too close. But he still had hooves—though they were much wider and stubbier than before—and could see the end of his snout through his eyes. They looked at least close to normal.

His fur was lighter than he remembered. Almost closer to the orange leaves on the tree right before it got cold enough to wear a blanket. He looked further down and realized, and with enough surprise to make him whinny, that he could bend and stretch farther than he ever could. Why, he could even touch his front hooves to his back hooves if he wanted to. He could sit like his friend sat on the ground.

He could see those things that dangled between his legs. Charlie had seen them on the other stallions when they were still in his field, but his looked different. They were bulbous, and had mottled brown splotches. Not at all how he thought they looked. And right above them, there was the head of his favorite toy. He loved it when his friend cleaned it, and when he was allowed to mate with the mares. It was so much fun even though it only lasted a few seconds. His toy looked smaller than it used to be, but then again his entire body was smaller.

If only his friend was here to lead him toward home.

His happiness faltered. Where was his friend? Why was he in the middle of this field with no one but himself, and who would feed him oats and hay? Why did his friend leave him?

Charlie drooped his head and stared at the ground for a moment. What was he going to do?

“Alright, little ones,” a voice called out, causing Charlie to jerk his head toward the sudden noise. It was strange, because it sounded like the noise his fellow herd mates used to say. But clearly defined, and with meaning. Instead of emotion, it carried weight. He understood it.

Across the field, near the very end of the treeline, there was a bright yellow creature. It looked very familiar to what Charlie looked like. Or what he used to look like. Only smaller, with larger eyes, and painted in vivid, bright colors. Very big eyes, actually. Maybe that was what Charlie resembled now? But his eyes were definitely the same. And he was still a little bit bigger than the creature, though. Long, feathery appendages adorned her sides. They looked like the wings of a bird, only large enough to carry something big. Charlie looked down at his sides. He didn’t have any wings.

The yellow creature flapped her appendages, and, to Charlie’s surprise, lifted a few feet in the air before falling back down near a large tree.It was standing near a tiny little brook passing underneath the root of a tree. “Now, go ahead and drink up, and I’ll gather some of those tasty mushrooms you like so much. Alright, bunnies?”

Charlie could tell it was a she. He didn’t know how, but something in that voice pointed to the fact that she dainty and mousy. Charlie wasn’t sure if he could repeat the noises she was making, but he could understand her. She was speaking to those little rabbits near the water. They weren’t speaking back, but Charlie wasn’t sure they were supposed to. In fact, he didn’t care much about any of that.

He could only think about one thing. His new feeder must have put him into the field with the mares. Yeah, that was it. He could feel his favorite toy begin to peek out of him. He trotted over toward the waiting mare. She and he would be making a foal for his new caregiver, whoever that was. He was excited. It wasn’t every day that he could go up to a mare and mate with her.

He closed in on the mare, and by the time he was only a few feet away, she noticed him. Her face contorted into shock, and she nearly jumped out of her spine. Her mane covered her eyes, and the creature shied away. Charlie thought it was strange that she was so jumpy. Almost like she saw a rattler or heard one of those bang-sticks. Charlie got closer.

“Um, hi,” she whispered. Charlie got closer.

“Is this your stream my rabbits are drinking out of?” she asked. Charlie flicked his mane and took another step closer. She shrank down.

“I’m so sorry! I’ll be out of your way right now!” She turned around and grabbed up a bunny in her hoof. Charlie reached her.

He whinnied loudly, causing her to jump in panic. Charlie sure thought that the mare was acting weird. Usually, she’d have lifted her tail for him to show that she was in heat. He couldn’t tell if she was receptive or not, but he wouldn’t have been put in the field with mares if they weren’t going to mate with him. He took a step closer and sniffed around her tail.

She jumped up in surprise. “Oh my, what are you doing?” Her face was red and eyes the size of the moon. The mare turned around and backed away toward the stream. She was stopped by the tall tree root. “Please get away from me!”

Charlie neighed in response, getting closer and dipping his head to her flank. He thought it was strange that someone would burn three pink butterflies into her side, but it wasn’t much weirder than some of the brands he had seen. He could smell her feminine odor. Her hole was dripping with that funny liquid that tasted like salt. He didn’t know why stallions did this, but he had seen it done a thousand times and did his best to imitate them too.

He got further behind her, as she covered her face with her hooves, and stuck out his tongue to taste her hole. She eep’d in response. It tasted different than what Charlie was used to. Sweeter than the usual salty taste. But still, he could feel that same nubby, round thing poking out of the slit ever few seconds. She was in heat alright.

The mare was still covering her muzzle with her hooves, almost as if she were embarrassed of what they were about to do. Charlie nuzzled her affectionately. There was nothing wrong with mating. It was natural. It was fun. It was what his new feeder wanted him to do.

Charlie nipped at her ear and pushed her with his side. Slowly, she stood up and removed her hooves from her face. She was shaking uncontrollably, but soon, Charlie saw her lifting her tail as he breathed on her rear. In front in him was his second favorite toy to play with. The one that he needed in order to play with the first one. It was dripping wet like all the mares he had mated with before. But hers was also smaller and cleaner than usual. Maybe it had something to do with being a different creature, Charlie thought. His toy must look cleaner too.

“Please don’t do this,” she said. “Let me go…”

Charlie looked at her eyes, soggy with those things that the feeder used to get when he was sad. Was she sad? Why was she sad? She should be happy that he was about to sire her foal. A nice little foal to play with and feed.

Charlie whinnied. Maybe she was sad because she didn’t have a foal to milk her. And she wasn’t pregnant.

Charlie mounted her. Don’t worry, he thought, you’ll be pregnant soon.

The mare screamed in fear as she felt Charlie’s weight fall onto her back and wings. He was careful not to injure her wings, but it was hard not to hit them when she was flailing around underneath him. He wondered why she was so against him mounting her. It was what he was supposed to do.

“Help!” she called out. “Help me!” Charlie beared down on the mare, keeping her still with his hooves. If she wasn’t still, he couldn’t put his toy in her hole. She needed to be still.

He gripped her mane with his teeth and pulled her back with his hooves. His toy was hard now, and kept missing the hole by just a tiny bit. Come on, he thought, I want to make her happy. He felt the slick liquid oozing from her slit start to come off on his toy. It felt good, but it made it harder to make it stick. He thought that maybe since it was a smaller hole than usual, it was harder to get inside her.

She continued to try and get away. “P-please, Mister… D-Don’t rape me. I don’t want to-”

Charlie found his mark before the mare could finish. She let out a scream-like neigh and buried her head to the ground. She weakly tried to get away, but Charlie’s grip was too strong. He felt her insides wrap around his toy like a vice. She was much tighter than any other mare he had ever been with. While she squeezed, the old mares used to just take it standing up, their holes loosely rubbing his member with their wet walls. The only thing that would ever be squeezed was the head, which was barely tight enough to make him feel good and make the white stuff come out.

But this mare was the best mate he’d ever had! Her whole body was quivering and little moans were coming out of her muzzle. Was she doing that because of him? He had never made a mare make noise before. It made him feel good that he made her feel good.

Charlie’s hips met her flanks with a loud smack as he slid in and out of her. There was a loud, shleck, shleck noise every time he pumped in and removed himself. He was wet down there. All over those things that were in between his legs, and the growing toy that was submerged in the mare’s fun hole. Charlie didn’t know why she was crying, but she would feel better in a second. He was about to feel a whole lot better in a second.

Just as usual, and especially with this tight mare, Charlie felt himself toppling over the edge. it only took about fifteen seconds from start to finish, but Charlie loved every second of it. He rammed himself all the way inside her and bit down on her mane. She screamed as he felt himself pump that white stuff into her. The foal making stuff. Charlie didn’t know how it all worked, but he knew that there would be a foal growing in her belly when it was over.

He grunted and stayed still for a moment, allowing the tip of his toy to un-flare and let him pop out without spilling the white stuff. He felt a sudden warmness, though. It was unexpected, and he quickly rushed to dismount her. Her tail remained raised, and from behind, he watches her wet, sticky folds shoot out a yellow spray onto his legs.

She was peeing. Charlie wasn’t sure why she was, considering that usually happened before mating, but nevertheless, her folds spewed forth her urine. It smelled like heat, and it smelled familiar. Like Charlie’s home. Like the field he used to live in.

He trotted up beside her and watched her face contort as she released herself onto the ground. A little bit of the white stuff was leaking out of her hole, too. A different hole than the one peeing, but very close. Charlie nuzzled her to say thank you, and to say that she hoped she wasn’t sad anymore.

She turned her head and nuzzled back. Her eyes were smaller than Charlie remembered. Small and black, like they were supposed to be. Now she looked more like him. Even that brand on her flank was gone. Almost like it had vanished. The mare whinnied and licked Charlie’s face, thanking him for giving her a foal. He was glad to have helped. It was his duty to give it to her, and it was her duty to give it life. Maybe he could play with the little one after it began to walk.

He looked around, and, seeing as though there was no white fence to contain him, decided to explore. Maybe he’d reach the limit eventually, but until then, he’d have an adventure. Surprisingly, the mare began to follow him. Maybe she was still afraid of something, but he couldn’t tell. They just walked together through the field, toward something off in the distance. Maybe it was Charlie’s new home.

“But, Dad, I don’t think they sell expensive jewelry at the market,” Twilight Sparkle said, catching up to the blue stallion who marched erratically toward the center of town. “Maybe you can get her some flowers or something. Maybe buy her dinner.”

The stallion nodded. “I know I can, but still. If your mother sees that I didn’t buy her something expensive, she’ll think I forgot our anniversary, and if she thinks I forgot our anniversary, she’ll leave me, and if she leaves me…” He shuddered. “Oh, Celestia. We have to find something before I go back to Canterlot.”

He hurried faster as Twilight struggled to keep up. “Would you relax? There’s no reason mom would leave you.” She paused for a moment. “Maybe she would make you sleep on the couch for a while, but she wouldn’t leave you.”

“Twilight, that’s a risk I’m not willing to take.” He gave her a stern look. “I need to buy her the biggest horn ring in town! Right now!”

Twilight rolled her eyes. “As I was saying, I don’t know if they have those here. In case you haven’t noticed, this is an earth pony settlement. Not much need for horn rings when there are mostly just earth ponies living here.”

The stallion kept going. He was going to take his chances. In this whole town, there must be at least one little diamond studded thingy to give his wife. The market came up soon, and both ponies walked into the crowd.

“Alright, sweetie, you go look by that flower shop over there, and I’ll go look by the smithie. Meet back here in a few minutes, and we’ll see what we’ve got, okay?”

Twilight hesitated for a second but rolled her eyes. “Okay, Dad, sure.”

Twilight’s father nodded to her and bolted in the other direction. Twilight couldn’t help but giggle before she turned back to the flower shop. She knew there were no horn rings around here, but maybe her mom would appreciate some nice flowers. Her mother wasn’t a greedy mare by any degree, but still, she liked it when ponies put thought into a gift.

She looked around the selection. Her mother love chrysanthemums. Maybe they have some of those…

“Celestia! What is she doing!?” a voice rang out, drawing Twilight’s attention. There were a circle of ponies in the middle of the market, hooting and hollering about something. And it did not sound good.

Twilight pushed her way through to see what was happening. “Get off of her, Caramel! Fluttershy, get away from him! Stop it, you two!”

“F-Fluttershy?” Twilight gasped. There was her friend, the shyest, most timid member of her friends, bent over, tail raised, mouth open, and moaning from a stallion humping her. Twilight nearly fell over in surprise. She wasn’t even blushing. Just a primal grunt, devoid of any sort of language besides neighs and whinnies. Twilight came in close.

“What are you doing, Fluttershy!?”

The mare didn’t respond.

“You’re going to get sent to jail, Fluttershy! Stop it right now! And you too, Caramel!”

Both ponies continued humping as the crowd watched in a mixture of disgust and curiosity. There were liquids flowing out of Fluttershy that Twilight didn’t even know could flow out of a pony. A pool of yellow, white, and clear liquid intermingled underneath their hooves. Twilight coughed when she realized that some of it was urine and the other part was semen.

Suddenly, Caramel whinnied loudly and hilted inside Fluttershy who was squealing like a filly. His balls contracted and his member flared. It didn’t take long for more stallion sauce to come pouring out of her by the cup. They were finished, and everypony in the square was at rapt attention.

Caramel pulled out. He didn’t make any eye contact with another pony. Soon, he began to urinate while staring off into the distance at nothing in particular. He looked lost.

A frothy, yellow puddle grew on the ground as his shrinking member ejected a mixture of sperm and pee. Nopony said a thing, simply watching it as it happened. Twilight looked to her side and even saw a stallion with an erection. She wanted to slap him for thinking that way. Something here was wrong, something awful. The mare, panting as she lay on the ground in her own juices, would never do something like… like this.

Then Twilight noticed something strange. Fluttershy’s cutie mark. It was gone. And her eyes were changed. They were small and black and for some reason, dull. Something was definitely rotten in Ponyville, and Twilight intended on getting to the bottom of it.

Twilight was about to make a move to pick up the mare and bring her to her cottage to get her to answer some questions, but she felt a breath roll across a very sensitive area. She nearly jumped ten feet in the air. The only thing keeping her down was the sudden weight of a pony mounting her from behind.

“Hey!” she yelled. “What are you doing!” She tried to get away, but they were too strong, whoever they were. She craned her neck back to see who it was.

The stallion had a burnt orange coat and a brown mane. His eyes were dull and expressionless, and his face showed no emotion. He was grunting, and Twilight soon found out why.

The stallion’s member was slapping on either side of her inner thighs. He was big. Much bigger than she thought she had ever even seen. Almost animalistic.

The stallion was holding her hips down with his hooves, and every few seconds, he would separate to try and pierce her with his cock. He was getting close too. She felt his flared tip missing her slit by centimeters. She wasn’t wet by choice, but it was spring. And she knew that her heat would be on her soon. She was already dripping a bit, like every other mare in town.

“Somepony, help me!” she called out. Twilight looked over to where the other ponies were standing around Fluttershy. But this time, they didn’t move a muscle. They all stood around her, sniffing in the air like a pack of wolves. The stallions were erect, and the mares were oozing fluids like she was. She grimaced at the sight.

“Please!” she screamed. “Dad! Help me!”

She turned her head to look at the stallion. He was rearing back. “Don’t, please! Don’t put it-”

But it was too late. The petals of her dripping flower were parted, and a foot long cock slid its way into her, rubbing her insides with leathery flesh. She screamed at the sudden intrusion, wanting it to hurt so much worse than it did. But she knew it didn’t. The juices she was leaking were enough to stop any sort of friction. She might as well been a tub of jelly to him. And damn was he big.

Twilight hated herself for moaning, but she couldn’t help it. Her soaked clit was rubbing his balls every time he hilted inside of her. His cock was all the way up to her ribs, and pushing against her womb.

Tears were streaming from her eyes. “D-Dad… please… h-help me… I d-don’t want him to…”

The stallion stopped and so did Twilight’s heart. Oh no! she thought. “Not inside! Please!” She tried to pull away, but he was too strong, and he was biting her mane. His cock was flaring, she was gripping him as hard as she could from orgasm, and she was screwed. The pleasant warmth of his spunk shooting into her made her melt like butter. It felt so right, so natural, and she can’t remember ever having been against it. Something in her head snapped like a wound up rubber band, allowing her to think freely for the first time in longer than she can remember. It was a good feeling. A natural feeling. Her eyes even felt relieved for some reason. Foggy, but relieved.

She neighed. The stallion behind her pulled out, and she was free to do something she had wanted to for quite a while now. Twilight released her bladder, lifting her tail and shooting her pee onto the ground behind her. Around her, she could hear the meaty sound of stallions pumping their cocks and mares massaging their flowers. That looked like a lot of fun.

Mr. Sparkle trotted out of the shop to find a large crowd forming in the center of the square. There were loud shouts and a varying of whinnies and neighs. Almost bestial in nature, like something you’d find in a play about the original pony tribes. Mr. Sparkle’s brow furrowed and he trotted over to see what was the matter.

“D-Dad… please… h-help me… I d-don’t want him to…” he heard a shallow voice whisper, barely audible above the crowd. His eyes shrank, his heart sank, and he breathed in tightly. Was that?... he thought. Was that Twilight?...

He heard a scream and immediately jumped into action. The sound was unmistakable. His daughter was in trouble, and whatever was happening, it was his job to stop it. For his little girl.

He broke through the crowd and saw a sight that chilled him to the bone. All around him, mares, stallions, foals; all were hoofing themselves or mounting each other, neighing as if they were animals. The mares were offering themselves up to the stallions, and like clockwork, one by one were mounted and penetrated. Cum was littering the ground.

And then he saw her.

Twilight was motionless in the middle of the circle, a stream of piss and a stream of white liquid flowing out of her saggy folds. Her father almost had a heart attack. His little girl was just taken in public, cummed in, and then let to soil herself while other ponies pleasured themselves. This was an atrocity! It was a gross outrage! It… it…

Mr. Sparkle sniffed something in the air. It was thick. The scent very well may have been choking him, but he couldn’t move very well to see if he was right. His body was unresponsive, as if in a fever dream. The smell locked his joints and pressured his muscle, forcing his member to pop out of its sheathe and hang limply in between his legs.

His eyes darted to the source of the smell. He knew it had to be. Mr. Sparkle took a step closer. It was asking him to, he had to. He took another step. She wanted him to; look at the way she’s presenting herself. She’s even in heat. He took a final step, his nose only a few inches away from his daughter’s slit. He breathed on it, and her tail twitched.

He licked her pussy and savored the taste of the stallion who took his daughter’s virginity. It was ripe and salty, but it tasted like nothing he’d ever tasted before. He noticed a few stallions getting closer to him and growled like a beast. Get away, he thought. This mare is mine! This is my cunt!

He went back to licking, sucking out as much fluid as he could from her slit. It was enough for a few mouthfuls, and he quickly downed them as soon as his mouth was filled. It smelled intoxicating, and he couldn’t even think straight. Part of him knew it was wrong, but the other part didn’t care at all. All that part saw was a beautiful pussy that wanted nothing more than his foals. Oh, the foals they would have. Two, if not three of the little ones, each desperately wanting their mother’s milk.

He mounted his daughter and struck home on the first try. He slipped in without any problem whatsoever, and she neighed in pleasure. Twilight was looser than he’d hoped, but that may have been from the last stallion. He’d have to thank that stallion for showing him how grown up his little girl became. She was taking cock like a real mare.

He hilted inside of her, lasting only about twenty seconds. Cum flooded her womb and he pulled out with a loud plop. Suddenly, his cock began to shoot urine in a thick stream, uncontrolled and loud. It was getting all over his legs and all over Twilight. He didn’t even care. She was his anyway, and that dripping, saggy pussy in front of him would gobble his dick many times in the future. He felt her lubrication all over his cock. It was instinctual, and natural, he thought as he nuzzled her head. They were mates now. One of many, he’d hoped. He would have to start his own herd, and Twilight and her mother couldn’t be the only ones in it. He looked around with his dark black eyes.

Time to make some foals.

Ponyville was devolving, and the audience was happy to see his experiment had worked. His yellow eyes and red pupils scanned the streets, mares running away from stallion, stallions mounting mares, and pools and pools of cum all over the ground. He laughed and laughed and laughed. This was priceless. He had worked so hard to mess with these ponies before, but his newest ideal was the most brilliant one yet. Instead of fighting the ponies, let their own primal instincts and feral nature come forth and do the damage for him. With this trick he knew how to create more chaos than he ever thought he could!

His paws snapped and he grinned as his gaze turned to Canterlot. Time to have a little more fun.