Author's Note

This chapter occurs a week or so after Interlude Four of The Second Story Club.

In Which Sunset Imports Pharmaceuticals from Another Dimension

For the first time since coming to the human world, Sunset Shimmer couldn't wait for school to end. Though she had no plans with her friends, she nonetheless was eagerly waiting for the end of school and after school activities. Specifically, she was waiting for 6:37pm exactly, when she was expecting a delivery. From home.

It had started several months ago, when Twilight began sharing her sexual adventures with Sunset through their magic journal. After infiltrating her friends' gossip club and unintentionally turning it into a sex club, Twilight had a series of increasingly improbable adventures that ended up in her dating Applejack, Rainbow Dash, and Rarity all at once. Sunset eagerly anticipated the stories of their escapades. While she'd mostly grown used to the human world, she realized only after reading Twilight's often detailed accounts that something was missing in her sex life in the human world. Sure, she'd hooked up with Flash a few times, mostly out of boredom or a desire to bind him closer to her (just thinking this made her a bit sad), but she'd rarely found it compelling. She thought she must just not really be into humans. And even Twilight's descriptions, while they turned her on, rarely made her consider masturbating, and never made her actually do it.

Then, one fateful day, Twilight told her about the spell that made a mare grow a cock, and how Applejack had rutted her with it. Suddenly she thought of human Twilight, twisting and moaning while Sunset's own cock plunged in and out of her. Or human Applejack wrangling her shaft with an enthusiastic hand. Or human Rarity, surprised and covered, face and generous breasts in a load of her, Sunset's hot cum, straight from her dick.

Then she realized that humans were great, she just didn't have the equipment she wanted.

She confided in Twilight, of course, but there seemed to be nothing to do about it. Though they both knew some magic functioned in the human world, Twilight or any other unicorn would lose her horn as soon as she went through the portal, and be unable to cast the spell. Sunset loved her stories anyway. Twilight nearly came through the portal in a panic when Sunset didn't respond to her story about rutting Applejack for the first time for a full half hour. It was just as well she didn't, though, as Sunset had been furiously stroking herself to a series of near-shattering orgasms at the thought.

But then, just a week ago, Twilight told her about Apple Bloom's potions, which replicated the spell. After some investigation, Twilight concluded they were likely to survive the trip through the portal fully functional. In the name of friendship, and supporting Apple Bloom, she was willing to front the cost.

And today, at for some reason the very specific 6:37pm exactly, they were scheduled to arrive. She considered it a victory that she could appear to listen in class, and didn't leak through her panties on to her chair. Though of course, when Twilight pressed her on what exactly she planned to do with the potions, she had to admit she wasn't sure. For now, she was just excited about being able to see if having a dick was as hot as she thought it would be. She had to admit, to Twilight and herself, that about all she was likely to do with one was jerk it off while reading the journal. Though even that sounded delightful right about now. Twilight herself wasn't even able to come help. Not only was she very busy with all her marefriends in Equestria, there was a Princess summit coming up as well.

So it was, then, that an extremely but nonspecifically horny Sunset Shimmer found herself waiting at the statue outside the deserted school, just as the Spring evening was getting dark. She gazed at her phone's readout agonizingly. The final six never seemed to want to change! Then, finally, it did, and just at that moment, with a glimmer of magic, a large crate appeared next to the statue, without even emerging from the base as usual.

"Fancy, Sparkle," Sunset muttered under her breath. The package was far bigger than she expected, milk-crate sized, and she wondered how many doses they'd sent along. Then she wondered what she would possibly do with it all. Eager to try it and without any other ideas, she hurried to the locker room and her gym locker. The school was technically closed, but she knew there were no alarms, and she'd long since acquired a set of keys. Though they were a legacy of her time on the wrong side of friendship and light, she kept them on the grounds that sometimes Luna and Celestia didn't realize she was needed somewhere. Like now, she was badly needed in the privacy of the girls' locker room.

As soon as the door closed behind her, she pulled open her locker, put the crate on the bottom, and opened it up. Half the bottles were labeled in yellow, the other half in blue, and both were covered in dense Equestrian script. She was about to pull one out to read it when she saw a note attached to the inside of the crate's lid, and read that instead.

Howdy Sunset,

I hope you like my potions. I dunno if Twilight told you, but I just got my cutie mark in making stuff like this! I'm real excited to be able to help ponies people do what they want with the ponies people they care about. We didn't know how long you'd be there or what you might wanna get up to someday, so I sent you plenty of doses, and both kinds. The blue ones have got a contraceptive potion mixed in, so take it when you just want some fun. If you ever get real serious with someponyperson, the yellow ones are full strength. I dunno how humans work, but in ponies they're so strong sometimes they'll knock you up even if you aren't in heat. So be careful with those. Let me, or uh, I guess Twi, know if you ever need any more.

Apple Bloom

P.S. They're pretty strong, and you should only use 'em if you're gonna rut right then. Otherwise you'll be really horny for up to eight hours. Also the contraception wears off in about six, that goes double for the blue ones.

Sunset scratched her head. She couldn't imagine wanting to get some girl pregnant on such short notice she'd not have time to send to Equestria for the right potion, though the idea did make her feel even hornier than before. Still, she was grateful for Apple Bloom's thoughtfulness, and supposed she wasn't sure exactly how much energy and calculation it took Twilight to send the things over.

She realized she'd been woolgathering, trying to convince herself not to just take a potion right now, even without someone to rut afterwards. She also realized she'd never succeed. She'd given Flash plenty of handjobs, surely she could just take care of it herself, horny or no. And she couldn't resist seeing if they worked.

Looking at the blue and yellow labels, she hesitated. Her first impulse was to grab a yellow potion. After all, she could hardly impregnate her own hand, and if she was going to run out of one, it was certainly the safe, blue ones. But then she decided it was more important to build good habits, and pulled out a blue-labeled bottle before carefully hiding the crate under her spare gym bag. She turned and took a deep breath, facing the low locker room bench and the door. She slid off her panties, and her musk filled the room. The thin cloth was drenched. She uncorked the bottle, closed her eyes, and gulped down the shot of liquid in a single gulp, expecting the standard icky medicine taste.

Instead, the potion didn't taste of anything except...warmth. It was like drinking a sultry summer afternoon. It made her head spin with arousal, and she instantly became aware of her nipples, now rock hard against her bra. Then the heat gathered in her groin, and she felt heaviness and an utterly unfamiliar sensation of length and...readiness. She opened her eyes and looked down to see her new cock.

It was a pony cock.

She admittedly wasn't highly familiar with either human or equine penises from intimate experience. But she'd done the standard sex ed at both schools, the standard comparing equipment with colts, and the not-so-standard dating Flash Sentry for power. So she knew enough to tell that the shaft she now sported in front of her still-dripping pussy was undoubtedly the one she'd have gotten had she taken the potion in Equestria. The mottled, veined shaft was the same color as her fur would have been, slightly darker than her human skin. Her fur even coated the heavy, full balls. The flared head was unmistakably equine, ready to seal the passage of her mate and ensure none of her (admittedly sterile) seed escaped. It looked smaller than pony cocks, but she assumed by virtue of this body's vertical orientation. It was as long and slightly thicker than Flash's, which physically she had enjoyed just fine, so she assumed no human girls would find it lacking.

The thought of plunging it into the warm pussy of one of her human friends made the urgent heat throbbing in the new member redouble. The only question now was who she'd think about while she stroked herself to her first ejaculation. She closed her eyes and started fantasizing. Maybe Applejack, with her muscular farm body? She'd seen her friend's rear in just panties in this very locker room, and it was something to behold.

Thinking about that ass, she began running her fingers lightly over the firm flesh of her new cock. Even the light contact was delicious, and now that the cock was hers, she found herself more fascinated by it than she'd ever been with Flash's. Despite the glorious firmness, it still felt powerfully alive, warm and slightly soft. And the edge of the flare and the large opening at the front felt fascinating to touch, and mired her in pleasure.

She imagined Applejack bending down, simple panties stretching over her firm ass cheeks as she reached for the floor, the outline of her pussy just visible through the fabric. She imagined walking up behind her friend and gently pressing her hard shaft between those cheeks. She ran her hand more firmly along the shaft, but it didn't slide as smoothly as she wanted in the absence of a lubricated oriface. She thought of the hand lotion she kept in her locker, and opened her eyes, preparing to stand...

...only to see Fluttershy staring at her wide-eyed, one delicate yellow hand reaching under her skirt.

Both girls stared at each other for a moment, motionless. Sunset couldn't decide what to say. Finally, though, her arousal, and Fluttershy's hand still held beneath her skirt, made up her mind.

"Enjoying the show?"

"Oh um Sunset, I uh, that is...yes."

Fluttershy's wide eyes never left Sunset's rigid member, and Sunset could swear her hand moved slightly under her skirt.

"What are you doing here?" She asked.

"Well I always stay late to feed the animals in all the classrooms. I just saw you hurry through the halls, and I was worried about you. Are, uh, are you okay? You didn't always have...that, right?" Fluttershy still hadn't raised her eyes, and her normally pale face was nearly as pink as her hair. Sunset found it adorable.

"No, I didn't," Sunset said. "Twilight was telling me stories about some magic they have in Equestria, that does, uh, well, this. And I thought it sounded really nice. She found out a way to send me potions that do the same thing. They just came in and I wanted to see if they worked. Well, they do. And I guess you're glad, too."

"B-but," Fluttershy managed. The pink had spread to her neck and shoulders, bare under her tank top. "It looks like, like..."

"A pony's, I know," Sunset said. "I guess the magic took it from my true form, even here." She shrugged.

"Oh." Sunset could swear she detected a little moan in Fluttershy's voice. She was about to ask why her friend had just watched, when Fluttershy continued. "I, uh. I'm sorry I didn't say anything. But, uh...well, I'd never do anything, since they can't talk and agree, but I really like stallions. Like, really like them." She was quiet for a bit again. "Can I look at it?"

"Uh, the potion does make me really horny, Fluttershy. I'm not sure that's a good idea."

"Please?"

It was hard enough to turn Fluttershy down at the best of times. Hopelessly horny and increasingly aware of just how adorable she was didn't count as the best of times. Sighing, Sunset leaned back and spread her legs. "Fine."

Seemingly instantly, Fluttershy was between her legs, eyes glued to the orange organ. It stiffened under the scrutiny, and under just how sexy Fluttershy's wide eyes were. Sunset didn't want to take advantage of her friend, but she couldn't ignore that this was increasingly resembling a fantasy. While Fluttershy's right hand remained at her own crotch, she reached out her left and gently ran her fingers over Sunset's shaft, much as she herself had just been doing.

"Wow, it really is a stallion's," Fluttershy murmured. Her right arm shifted, and she moaned. She closed her hand tighter on Sunset's shaft and noticed the same lubrication issue. Rather than stopping, though, she brought her hand to her mouth and spat on it before returning it to Sunset's pony cock. Now coated in warm fluid, it slid deliciously along the shaft. Sunset had never felt anything like it, and let out a loud moan as her head became even swampier.

"Fluttershy," she managed, "I am very sensitive right now. If you keep doing that for long I'm going to make a mess."

To Sunset's shock, Fluttershy looked up into her eyes, still blushing bright pink, and smiled. Still stroking Sunset's cock, she removed her other hand from under her skirt. Sunset couldn't help noticing her fingers glistened with fluids. Fluttershy licked them clean, then still wordlessly yanked off her tank top and threw it in the corner. She'd not been wearing a bra, and her small, perky breasts and erect nipples nearly drove Sunset over the edge on their own. The new sensations in her cock were nearly unbearable. Then Fluttershy delicately spit on the head of her shaft, and ran her hand firmly over the entire top, trailing her fingers along it, before returning to pumping the shaft vigorously.

It was too much. Her flare swelled. "Shy," she yelped, "I'm..."

"I know," Fluttershy said, smiling, and then Sunset groaned and her first rope of cum blasted out, directly into Fluttershy's open mouth. The sight of it dripping out of her lips and down her adorable chin was too much. Sunset thrust forward involuntarily, the motion lowering her cock's flared tip, and unloading several more ropes all over Fluttershy's chest before her orgasm finally subsided.

Sunset sat panting. She'd never felt anything so intense. Fluttershy seemed either enraptured or stunned, sitting with eyes half open, thick semen dripping from her lips and down her chest. Several ropes had hit her right on the upper swell of her breasts, and hung suspeneded from the rock-hard nipples. Fluttershy licked her lips, gave a little smile, and opened her eyes. Sunset's cock remained, and remained hard. She still felt ready, and her magical balls still felt heavy.

"It's still there. And um, ready." Fluttershy said.

"Yeah, Twilight mentioned this," it was Sunset's turn to blush. "It's powerful magic, it lasts two or even three times. It was made to let mares mate with each other, but this potion's sterile. It's okay, I was just going to use my hand, that was nice, but I'm sorry I got you all-" Fluttershy cut her off.

"Oh no Sunset, I would never leave a fellow creature in need." She got to her feet and moved to the opposite bench. Sunset's eyes widened and she felt if anything even stiffer, suspecting her fantasy was about to really come true. Facing away from her, Fluttershy reached under her skirt and pulled off her simple white panties, throwing them in the pile with her top. The scent of her musk filled the locker room. She lay over the bench on all fours and lifted her skirt. Her rear was thin but perfectly shaped, and beneath it Sunset could see the fringes of her wild pink pubic hair - untrimmed, hippy style, of course - peeking around her tiny-looking slit. It looked so small and innocent Sunset wasn't sure she would even fit, but Fluttershy's fingers had left obvious wetness on the lips and just outside it.

"There there, you poor thing," Fluttershy's calm voice was somehow intensely erotic. "All ready to go and no mare around to help. It's okay. Come here and let me take care of you."

The voice and her arousal combined to leave Sunset unable to resist. She stood and cast off her skirt, then fell to her knees behind Fluttershy, preparing to mount like a pony. She was about to press the tip of her tool to Fluttershy's waiting sex when something occurred to her.

"Fluttershy, is this your first-"

"Shhh, don't worry my stallion," Fluttershy pressed her rear back, and a flood of moisture tumbled from her slit on to Sunset's eager head just at the slight contact. "I'll be fine. Just let Mama Fluttershy take care of you." She pressed back a little more, and the damp covered the whole head of Sunset's cock now. She gave up, but she wasn't going to let what she suspected was her friend's first time be too rough. Mustering all her willpower, she slowly pushed herself inside.

It was everything she'd hoped and more. The heat and moisture surrounded her, and the feeling of being so deep inside her friend was sublime. Intimate and sexual all at once, she felt like she was flying. She moaned.

Halfway in, Fluttershy gasped and flinched, and Sunset stopped. A few moments later, though, he friend moaned again, and began pushing back.

"You poor thing," Fluttershy murmured. "This wonderful mmm, cock, and those big heavy uh, balls, and no mare in sight. It's okay, though, I'm here. I'll be your brood mare, oh yes."

Sunset groaned, and bottomed out. Slowly she began thrusting. She'd never rutted as a pony, but even being on the stallion's side, this felt natural. She pulled off her top and let her breasts rest against Fluttershy's back as she pushed all the way inside her. Being completely surrounded was her favorite, and felt just as right as she'd thought it would. Unused as she was to the new sensations, she was nearly there already, and began to pull out. Fluttershy pressed back towards her as she did.

"Fluttershy, I'm really close."

"I know you silly stallion. I told you I'd be your brood mare, give me all of that lovely seed. Please."

Something about the meek, tiny "please" did it. Sunset felt herself flaring, and drove all the way inside again, pressing Fluttershy hard to the bench with an eep that sounded delighted. Then she was coming again, rope after rope pouring into her friend, sealed off by her flare. Fluttershy was sqeaking, a sound that Sunset might have mistaken for pain if not for the constant orgasmic contractions around her pulsating organ.

She came more than Flash ever had, more even than she thought a stallion would, burst after burst of semen flooding into Fluttershy's petite body. She wondered if the magic was spending some of the mass of the magical cock itself as seed. She felt it building up in front of her shaft, unable to get around the flare. Then Fluttershy shuddered and let out a loud squeak, and the pressure eased. She realized, prompting another orgasmic convulsion, that some of the seed must have flooded through her friend's cervix and into her womb.

Finally with a gasp it was over, and the cock disappeared entirely. Fluttershy raised her rear as Sunset toppled off, though not before a large blob of cum dripped out. Then she flipped over and lay on her back on the bench, panting, as Sunset fell to the floor. She looked up and saw Fluttershy had raised her legs and had a hand on her belly, which was slightly but obviously swelled with the load in it. They sat panting and recovering for what felt like a long time, silent.

"Um, yay," Fluttershy finally said. "Thank you, Sunset."

Sunset blinked, then laughed. "No, thank you."

"No, what I mean is," Fluttershy paused. "I don't really know what came over me. That was a...a fantasy. And it was...nice. But..."

"I get it," Sunset said. "It was the heat of the moment, and now you feel weird."

"Yes."

"It's okay. I don't expect to do that again. If you want to you can ask me, but I don't expect anything. And I'm still your friend even though I know you look cute naked." She looked at Fluttershy's skirt, drenched in sweat but still fastened around her waist. "Well, mostly naked."

"And even though you took my virginity with your pony penis?"

Sunset laughed.

"Yes, of course, even so. Now I need a shower, and I think you do too. And let's go home, and if you want to talk about this later, let me know. Otherwise, it was a favor between friends. Okay?"

Fluttershy smiled, and got to her feet. Her belly slowly flattened again as oozing gobs of cum trickled down her legs. She blushed again.

"Of course, Sunset. Let's do that."

Fluttershy showered longer than Sunset did, and she didn't want to force awkward goodbyes. So she just called one out as she dressed, then took a couple of the blue bottles home with her. Just in case.