Twilight Sparkle was engaged in her usual leisure pastime of reading a book when she was interrupted by a call from her friend Sunset Shimmer.

“Hey,” Twilight answered the call at once. “What’s up?”

“Not much,” Sunset said. “But I did find something interesting. I was at a yard sale and I found this mirror. I thought I’d let you know. The owner swears it’s magical, and you said you wanted to bring you any magic mirrors so you could study the portal to Equestria. Honestly, I think he’s just a charlatan and I don’t even know why I’m bothering, but I thought I’d let you know.”

“Okay. Thanks. I’ll be alright over.”

Twilight hung up her phone and placed it on her night bed, floored by the revelation that just appeared to her. The implications were staggering … the idea that such a thing even existed ...

“Sunset goes to yard sales?”

True to her word, Twilight Sparkle went out to this yard sale and found Sunset Shimmer there, idly playing with a cuckoo clock and flicking a dippy bird with her finger to make it bounce up and down for her amusement.

“Hey!” Sunset waved at Twilight while she gave the bird another tap. “Nice to see you, Twilight.”

“Nice to see you, too, Sunset,” Twilight said. “So, where is this magic mirror?”

“Over there,” Sunset pointed, where an older gentleman, presumably the owner, was sitting on a lawn chair. “Like I said, I think he’s just making it up to convince people to buy it, but he seems pretty sure about it. So you know, knock yourself out. If it is magic, we’ve made an amazing discovery! If it’s not, well, I’m sure something will come up.” She returned to playing with the mock bird.

Twilight went over to the gentleman. He seemed to be asleep and at rest, but once she got close to him, he startled.

“Howdy, little missy,” he said. “Didn’t see you at first. Gave me a fright.”

“I’m sorry,” Twilight said.

“It happens when you get older.” He gestured to the various things around. “Anything interest you?”

“Yes, actually. I’m very interested in this mirror. I’ve been told that you say it’s magic?”

“Sure is. Witch magic, that is, if you can handle that sort of thing. Thing’s perfectly fine. Brought my wife and I a lot of happiness over the years, but she’s passed and I’m soon to follow, so I figure some youngster ought to get some use out of it.”

“I’d like to take it and run a few tests on it, if you don’t mind?”

“Sure, sure. Just drag the thing away if you want.”

“Really? Thank you!”

“Just take good care of it is all I ask.”

Twilight immediately went to drag the mirror away. She pulled Sunset away from the bird dropper and they hauled the thing off the old man’s property.

“Thanks again!” Twilight called as she and Sunset carried it away.

“Sure, no problem,” the old man said. “Yessiree. That thing brought a whole of fun and joy to my wife and me … take good care of it, ya hear? It’ll bring you joy too.

Sunset heaved a grunt as she and Twilight placed the mirror down in Twilight's room.

Sunset smacked her forehead. Of course it was only after they already got the darn thing up the stairs that it occurred to her to ask a basic safety question.

"Twilight? Aren't you going to be running experiments on this mirror?"

"Yes?"

"So are you sure it's the best idea to have in your room? What if you, I don't know, make it radioactive or something?"

Twilight chuckled. "Sunset, you've been watching too many movies. Real science isn't like a comic book where you just blast everything with radioactivity and hope to get a superhero out of it!"

Twilight turned around, pulled out a pencil and notebook and quickly wrote down note to self; cancel all radioactive exposure experiments. She then pocketed the items before Sunset could notice.

Sunset looked over at the mirror again with concern. She gave a shudder.

"Sunset?"

"I'm okay," Sunset said. "Just got a chill all of a sudden. I think it must be the window."

Twilight looked over and saw her window was closed.

Sunset went over to the mirror. She placed her index finger tentatively on the surface, and when there was no reaction, she felt satisfied.

"Well, Twilight, have fun trying to get magic out of this mirror," Sunset said. "Like I said, I'm pretty sure that guy was making it up so that he could get someone to buy it. Honestly, I don't even understand why I bothered you with all this."

"It's okay," Twilight said. "You were trying to be a good friend and thinking of me. I appreciate that."

Sunset gave a warm smile. "See you later." She waved and left the room.

Twilight went up to the mirror. Sunset may have had her doubts ... heck, Twilight may have had her doubts, but Twilight was a woman of science. If this mirror was or was not magic, there was only way to find out; through study.

Twilight pulled out some scientific instruments from her drawers and set up them near the mirror. Among them were an astrolabe, to see if the mirror reacted to the positions of stars, as several rituals claimed to do. A microscope, to closely examine the molecular structure of the glass and see if it differed from regular glass in anyway. As well as a video camera to document any unexpected results.

Twilight set the camera up directly in front of the mirror. She set it to record, then stood in front of it.

"Twilight Sparkle, scientific log. Today, my friend Sunset Shimmer helped me find this mirror from a garage sale. The owner said it's enchanted. This could be a productive lead in my ongoing research to understand the nature of the portal that connects Canterlot High to Equestria!"

Twilight deflated and gave a sign.

"Or it could just be a scam." She perked up. "But soon we'll know for sure!"

She turned to the mirror and was immediately dumbstruck by what she saw.

It appeared to be a version of her, but older and - there was no other word for it - sexier. She wore her hair in drill-shaped curls that bounced around her head. She had slightly darker skin, almost like that demon form Twilight took once, and instead of Twilight's usually unremarkable blouse and skirt, her reflection wore a dark gray tank top that showed off a prominent bustline, a black blazer straight from Sunset's wardrobe, and a matching charcoal colored skirt so short it teased at giving anybody who wanted to see a glimpse at her panties.

Twilight was taken aback. She blinked and rubbed her eyes to make sure she wasn't seeing things. When she finished, the doppelganger was gone.

She turned to the camera. "You saw that, right?"

Twilight went behind the camera and hit rewind on the recording. She combed through the entirety of the footage - there wasn't much yet, so this was easy - yet the camera had no recording of showing a different Twilight in the mirror.

Twilight stood back and stared at the mirror. She was starting to get nervous now. Whatever she was prepared for, she wasn't expecting anything like this. The camera didn't show anything, but the phantasm had too many specific details for Twilight to think she had just imagined it on a flight of fancy. Her appearance was too well-put together for simply a scientific mind anxious for results. Too ... coordinated, too focused. The fake her knew what effect her dress had, and dressed that way knowing as much.

Before Twilight could ponder the matter further, the phantasm appeared again. Twilight rubbed her eyes, but this time the other version lingered.

More, it spoke.

"Hey there, cutie. Why don't you come in for a ride?"

The reflection held out a hand and crooked a finger beckoningly. Twilight made no motion to move, but was pulled along as if someone had taken a hold of shirt.

"That's it ... a little closer."

"Wait!" Twilight shouted, stomping her foot to hold herself in place. "You can't just do that! You have to explain a few things to me!"

"What's there to explain?" her reflection gave a shrug.

"Who are you? What are you? How did you get here? How does this mirror work?"

"Isn't it obvious? I'm you. Or least what you could be. This mirror shows you your potential. What you could grow to be. What you could become."

Twilight looked her mirror self up and down. "What I could become to be is someone who dresses like a sex worker?"

"Don't knock sex work. It pays the bills," her doppleganger replied sharply. She crooked her finger again, and Twilight was pulled toward.

"Come on now, Twilight. Surely you can't tell me you haven't felt any ... desires? Any needs lately? I know you must have been thinking about it a little, or I wouldn't be here."

"What do you know?" Twilight asked, half with a dismissiveness against a strange doppelganger, half with the curiosity of a scientist.

"I know all your secrets. Remember, I'm you," the double said. "So I know that you actually have a bit of a desire for ..."

She gestured to her crotch and made a lewd motion as if she was stroking a long thin object.

Twilight blushed at the implication. She shook her head and turned away. "N-no. It's not like that."

"Oh, sure it is. Now come on. Time's a-wastin, and I'm sure Sunset and the others would love to hear about it."

"S-Sunset?" Twilight stammered. She yelped as she was yanked back by the back of her shirt.

"Oh yes, I bet Sunset would just love seeing what goes in that dirty mind of yours."

Twilight turned around, and at this point she wasn't sure if she was being spun against her will or if a morbid part of her did it willingly.

"I-I don't know ..."

"Come on, Twilight," her double said. "I know you've been wondering what's it like* I know you've looked at videos and online and if you've asked yourself, what is it like to be pounded by a nice hard cock? And there's another thing, too. A thing you don't want to admit."

Twilight stammered in protest, but her double dropped their skirt, revealing a sizable erect phallus, twitching with anticipation.

Twilight went silent. She stared at the tool as if entranced.

Her double was right. She had been wondering what it felt like to have a strong cock throbbing inside her. Wondering what the women in those online porno vids felt when their parnters' spunk went rushing inside them in spurts. Was it warm? How did it taste? Which hole was better?

"Come on," the double said, pointing at her cock with her index fingers. "You know you want to. Why would I have it if you didn't?"

There was a part of Twilight that was persuaded by this argument. If this mirror knew what she wanted, had some way of knowing her desires, then it would make perfect sense for her double to have a cock. Another part of her argued that it was a trick, that the mirror was just being smooth, and that it didn't really matter whether it was correct or not, it was not to be trust.

In spite of her better judgment, Twilight listened to the first part.

Tentatively, cautiously, she approached the mirror. Her double smiled and nodded to encourage her.

Once she was standing in front of the mirror, Twilight drew her eyes down to the active rod. It seemed considerably larger up close.

She was nervous and inexperienced.

"So, um, how do I ...?"

"Here, let me."

Her double reached through the mirror, her arms emerging from the glass, and took hold of Twilight's shoulders. She jerked Twilight forward, and the double's cock ripped straight through Twilight's jeans and went straight into her cunt.

"Oh my!" Twilight said. "It's ... it's so thick." She needed a minute to adjust. Taking a strong thick cock into her like this wasn't her vagina's first instinct, but eventually it adjusted. It began to wink and twitch, trying to hold onto the cock, as if after a bit of a rough start, it now yearned to take the rod inside her and squeeze it until it came.

"That's the way you wanted it, isn't it?" her double asked before giving a thrust that made Twilight shout.

"Y-yes ..." Twilight softly murmured as her double pumped in and out.

"I can't hear you!" her double teased her by taking the cock and not putting it back, leaving Twilight's snatch with a horrible empty feeling.

"Yes! Yes, I want it that way!" Twilight shouted and moaned when her double rewarded her by sliding the cock inside as far as it would go.

"It feels so strong," Twilight murmured.

"That's because it is," her double said, giving another jerk, which made Twilight's body shake.

"Is this real?" Twilight asked, mystified. "Is this actually happening? Am I really going to know what ..." she looked down at the cock sliding smoothly in and out of her. "What it feels like?"

"Not if you don't pipe down," her double said. "And what does it matter? As long as it feels real, isn't that good enough?"

"I ... I guess so," Twilight said. She heaved a deep breath, the pumping taking a toll on her.

"That's it, Twilight," her double said. "Just take it in. Take it in. Come closer, darling, closer."

Twilight did, despite the risk. Her double tightened her grip on Twilight's shoulders, then pulled Twilight forward, pulling her into the mirror.

"Ah! What did you ... ooh," Twilight asked. She was too distracted by the twitching cock inside her to care too much about the implications of passing through the mirror. As far as she could see, they were in her room, just reflected; books and a reading lamp on the right on her desk were on the left now, and vise versa. Not that it mattered.

"You can feel it, can't you?" Twilight's double whispered with a crazed look in her eye. "It's going to be soon now, isn't it? We're so close. And you can't wait for it, can you?"

Twilight shook her head.

"You want it, don't you? Badly. Obviously. Why would I have it if you didn’t?" Her double massaged Twilight's shoulders, distracting Twilight from the cock so she wouldn't be ready when it inevitably exploded - and it would feel so much better for being a surprise.

"You want to feel it, Twilight."

"Yes," Twilight said, closing her eyes.

"You want to feel it spurting, gushing inside of you ... you want to feel how warm it is ..."

"Yes!"

"How thick."

"Yes!"

"Okay," her double said.

Twilight was taken aback by the orgasm. It felt like the cock doubled in size as it came to a head, spurting and gushing thick cum into her pussy.

Twilight blushed and giggled as her cunt filled up with spunk. It was everything she hoped it would be and more. It was warm and thick and spread all over her pussy. It made her feel full, like she'd just had a good meal.

Her double slowly and gently took her cock out from Twilight. Twilight watched as the cock, soaked and dripping with cum, gradually shrunk down, getting smaller and smaller, spilling drops of cum onto the floor.

Twilight's watching became more earnest as she saw the cock get even smaller and retract into her double's crotch, as if it was being covered up.

"Is it ... supposed to do that?" Twilight asked.

"Ordinarily, no," her double said. "But as you might have guessed, this isn't ordinary."

Twilight continued observing with rapt attention as the cock retreated into the folds of her double's skin. It disappeared completely, going under the skin like a growth, and left a smooth vagina in its place, though one still dripping with cum.

Twilight jerked as she felt an odd sensation in her own cunt. It was strange and uncomfortable, though not painful, as if the walls of her snatch were closing up and sealing together, removing the empty space between where a penis was supposed to go.

"W-what ..." Twilight stammered.

"Come on, Twilight," her double said. "I know everything about your fantasies. Everything. Even that. I know the part of you that you don't want to admit. I know you've been curious ..."

"But ..." Twilight stammered.

"It's okay," her double assured her. "It's perfectly fine to want to know about that. To wonder not just what it feels like to have so much thick ... warm cum poured inside you, but what it feels like to pour it into someone else. Go ahead. It's okay."

Twilight looked down in amazement as her vagina disappeared and the head of a cock wormed out from her skin in its place. In short order, it grew to a normal size for a flacid cock, then stiffened up and hardened, expanding out into a firm erection of substantial size comparable to the one her double had three minutes ago.

Twilight curiously batted at her new dick. It was so rigid. Poking it at was like poking a chicken drumstick, a solid bone with thin meat around it.

"It's nice, isn't it?" her double said. "Hard and sensitive, like a good cock should be. It should let you cum pretty easily. Don't worry, you're welcome to borrow it for as long as you like."

"Borrow?" Twilight asked.

"Well, I mean, I guess I could let you keep it permanently, but I didn't think you would want to. Now come on." her double spread her arms out welcomingly. "You owe me a favor."

"What?"

"You know what I'm talking! Get over here and fill me up!"

"Oh!" Twilight, catching up, ran over to embrace her double. She looked at her double's vagina and tentatively began to slide the cock inside.

"Oh, come on! I know this is new to you, but you can be a little rougher than that." her double whispered. "Sometimes you have to be."

"Sometimes I have to be," Twilight repeated in a trance-like monotone.

"Now ... Twilight ... as you were."

Twilight moved in again, pushing her cock into her double's slit. It felt so strange, but good too.

Once Twilight got over her initial nervousness and got the tip of the cock past the outer lips of her double's vagina, the rest came naturally. Her cock slid in briskly, as if lubricated, and came to a halt as if snapped in place by magnets.

Twilight whimpered, not sure what to do next. Her double helped her by rocking gently back and forth, inching the cock out little by little and gently stimulating Twilight.

Twilight moaned, surprised with the sensation. She rocked herself, getting more of a feel for how this was supposed to work. She slid in and out of her double, slowly at first, before gradually picking up speed, pumping her double's slit with as much vigor as the double had previously used on her.

"Yes!" her double encouraged her. "That's it, Twilight! Give it to me, fast, hard, hot! It's going to be amazing, isn't it, Twilight? When you cum? You are going to cum, right?"

"Of course!" Twilight panted, caught up in the throes of her stimulation. Her cock twitched as she pumped it. She could feel the release building up inside of it. The pressure. The tension. The desire and need to spurt.

"And when you cum, are you going to fill me up?"

"Yes!"

"You're going to give me all of it, right?"

"Absolutely!"

"Well, come on then! Give it to me! Can't you tell I want it?" her double's voice softened, going from a confident one to an almost (yet not quite) pleading one. "I want it so bad, Twilight. I've been a good little slut, haven't I? Don't I deserve it?"

Twilight wasn't sure how to react at first, but she picked on it after some deliberation.

"Yes, of course," Twilight cupped her double's cheek. "You've been a very good slut, other me, and I'm going to reward you."

"Really?"

"Yes, really."

"Then come on!" her double's swagger returned. Her cunt winked and clenched on Twilight's rod, becoming tight and stimulating Twilight's rod even more with each pull and push Twilight made. "Give it to me!"

"I'm ..." Twilight panted. Her cock felt so tense. She felt an overwhelming need to cum and spurt, yet also an urge to drag it out and keep from cumming for as long as possible. Was it always like this for people who had cocks?

Twilight grunted in surprise when her orgasm slipped through. It had gotten too much. She couldn't hold in it anymore. Not when she had so much delicious cum to give. She tipped over the edge and the tip of her member flared up, sending spurt after spurt of seed into her double's pussy. It felt like someone had pinched the tip of her cock and willed the cum forward.

Her double moaned and cheered. She gave Twilight an appreciative pat on the back.

Twilight finished, and she pulled out from her double. Somehow, despite the intense orgasm she just experienced, she found her cock was still hard, even as it dripped ejaculule.

"What ... I don't understand ..."

"Oh, poor baby," her double cooed. She got down on her knees and gave the cock a light quick stroke. She didn't seem to mind getting cum on her fingers. "Still hard?" She gave the cock a squeeze, and more cum dripped out, but the erection held.

"You want me to do something about that?" her double asked sympathetically. She tilted her head cutely.

Twilight nodded.

"I know just the thing," her double said. She slipped her jacket off to the floor and pulled up her top, showing her sizable tits for Twilight's pleasure to view.

She laid back, using her jacket for padding on the floor.

"Come on," her double gestured to her tits. "Stick it right here. I'll take care of you."

"Um, how do I...?"

"Just sit down on top of me," her double answered. "Just place your thighs on my stomach."

Twilight awkwardly sat down and made an attempt to straddle over her double's navel. "Like this?"

"Yeah, that's good. Now, pull forward and stick your cock between my tits."

Twilight looked around, still not familiar with what to expect. She looked down at her thighs and tried to hop from her spot forward.

Her double grunted. "No, not like that, silly. Just slide it forward. Try to keep your butt level with my head."

Twilight tried again, this time with more success with her double's instructions.

"Good. Now stick it here." Her pointed at the precise spot of entry of under the breasts.

Twilight moved forward, tentatively placing the tip of her cock inbetween her double's mounds.

"Good, good, you're doing great," her double said. "Only go a little further. That's when the real fun begins."

Twilight did as told, and her double squeezed her tits together, squashing the cock between them.

Twilight yelped. It felt amazing. Her double's tits were so soft and thick and lumpy. It was like her cock was between two pillows. There was a distinct contrast to the feeling, having her ridged, straight, hard cock caught between her double's squishy, malleable jiggly jugs. She wanted her double to squish harder, and harder ...

Her double bounced her tits up and down, jiggling them and rubbing them onto the cock.

Twilight moaned and her cock twitched. She thought she would cum any second and could do nothing to stop it.

"You like that, huh? It's good, yeah? Isn't it? Doesn't it feel just so amazing to have my titties on your cock?"

"Yes! Yes!" Twilight shouted.

"You want to make a mess? You want me to make you cum?"

"Oh, yes, please! Please make me cum!"

"You'll cum over all over my nice, big, milky tits?"

"Yes! I'll do whatever you want, just do it!*"

“Okay! Make it a good one!” her double squished her tits in even harder, and Twilight couldn’t believe she had the room to do that.

Her cock felt so tight, squished in between those huge squishy globes. Twilight couldn’t keep from moaning louder than she ever before.

“Oh, mirror me! I’m … I’m …”

Twilight sighed and deflated as she came. Her cum came out in thick yet broken spurts, sputtering and splashing over her double’s gorgeous globules.

“Didn’t that feel so good?” her double asked, pushing herself up while cum trailed down the slope of her breasts.

“Wonderful,” Twilight said. “It felt wonderful.” She blinked, weary-eyed.

“Oh come on,” her double reached up and slapped Twilight on the cheek to keep her awake. “Don’t give up already. Look! You’re still hard!”

“What?” Twilight was alarmed to see her erection was holding steady. She wasn’t exactly an expert, for several reasons, but from what little she did know about cocks suggested to her that it should have gone down by now. Even just reduced a little.

“You’re worried, aren’t you?” her double asked, reading her face. “Some advice; don’t be. It’s fine. It’s a magic cock! It’s perfectly natural for it to, ah, over-perform.”

“And you’re sure this isn’t going to cause any other health problems down the road for me?” Twilight asked.

“Yes. I promise, it will all go away once you step back through that mirror.” Her doubled pointed, but when Twilight turned her head, her double grabbed Twilight by the cheeks and pulled their faces together.

“But don’t you dare go anywhere near that exit until we’re done here,’ her double said. “I still have one more treat for you …”

“O-oh? What’s that?”

Her double dropped onto her stomach, squishing her breasts against the floor, and took Twilight’s cock into her mouth.

Her double began to suck, her lips sliding up and down Twilight's hard cock. Twilight whimpered and moan as the warm sensations slowly covered every inch of her member.

Her double reached out and cupped Twilight's thighs and tugged, pulling Twilight forward and taking the cock deep into her throat.

Twilight gasped, not thinking herself, even a mirror alternate version, capable of taking a cock so large so deep into her mouth.

Her double wrapped one hand around Twilight's cock and the other cupped Twilight's balls, stroking the member and pressing gently on Twilight's borrowed nuts.

Twilight inhaled deeply, feeling her load increase by the second. This was going to be a good one. Her best yet. She couldn't wait. She was going to cum so much, so very much, and fill her double up. She would pump so much spunk into her double her belly would swell up from having so much seed inside it.

Her double gave a contented moan, as if reading her thoughts and looking forward to the experience. She stroked hard on Twilight's rod and bobbed her head up and down the cock.

Twilight tensed up, feeling her cock twitch as her next climax approached ever so slowly. Not content to be merely a passive recipient, she grabbed her double by the head and pulled on her hair.

Her double moaned, enjoying Twilight getting rough with her. She cradled Twilight's jewels tighter, ready for Twilight to squirt into her mouth.

Twilight looked around the room, unable to do much else but tug on her double's hairs and wait for the release. A question formed in her head, but a twitch from her cock distracted her from it.

"Oh, mirror me ..." Twilight moaned. Her cock bulged, the base of giving a twitch that traveled up to the tip. Then another twitch. Then another. Until the twitch built up at the base to a heat, then to a pressure, that built up quickly and ended with Twilight screaming as her rod gushed cum into her double's mouth.

Twilight was instantly struck by the sight of her cum filling up her double's mouth. Specifically, she was turned on to see the cum flow past her double's lips and dripped down her chin, painting her face.

Her double pulled away, her lips smacking together with a pop. Twilight's still-hard cock bounced and flopped.

"Really!?" Twilight asked, baffled. "It's still hard? Still?"

"What can I say?" her double said with a shrug. "I guess you must just have been really horny."

"Yeah ... maybe. Wait, I wasn't horny at all until you showed up and gave me this thing!" Twilight looked at her double expectantly, expecting her to fix it.

Her double shrugged. She snapped her fingers, and Twilight's erection finally died down, her cock shrinking and turning flaccid, hanging limpy between Twilight's thighs.

"Thank you," Twilight said.

Her double smirked and cupped her breasts. She jiggled them, making them bounce like beach balls attached to her. Twilight quickly grew mesmerized by the display. Her member grew hard again without much effort, and it seemed to Twilight that it had gained an inch in the process.

"Hey!" Twilight protested.

"What?" her double said indignantly. "You were the one who wanted to do this, and we have more to do."

"What possibly more could we have to do? We've done everything! You went inside me, I went inside your vagina, your mouth, your tits ... what else is left?"

Her double turned around, got onto all fours, and stuck her rear up into the air.

Twilight scoffed and rolled her eyes. "Really? Really?"

Her cock twitched as if to say yes.

Twilight sighed again. She didn't want to. She wanted, in fact, to take a break, but her member was twitching and throbbing. It was addictive. It seemed like no matter how much she came, it would never be enough. It felt as if it was pulling her towards her double.

With reluctance, she walked over to her double, who was shaking her bum around to try and entice Twilight.

"Please stop," Twilight said. “You’re not making this any more appealing.”

"Oh, come on,” her double encouraged her. "Maybe once you actually try it, you'll like it."

Twilight was skeptical, but she slid her cock inside anyway.

Her double's words proved correct. Her double's ass felt so tight, yet her cock went in so smoothly. Her butt cheeks squished against the cock, feeling just as good as her tits did when she used them earlier.

Twilight gave a funny-sounding moan. It felt like something was taking over her. Like her cock was taking control. She grabbed hold of her double's cheeks and began to pump, bucking her hips and feeling like she was tenderizing her rod by her sliding it in and out of a place that was so tight.

"Yeah! That's it! Come on, Twilight, come on! Squeeze it, pinch it, ride it hard!"

Twilight was breathless. She continued pumping in and out an felt her orgasm coming on again. The sensation was incredible. The feeling of a load building up and up in the base of her shaft, the tiny twitch that signaled that the orgasm was getting closer and closer ....

Twilight lurched over, feeling a pit in her stomach. There was just something about it that made her feel like this orgasm was going to be even better than the one before it. Maybe it was the way her double was encouraging her. Maybe was the larger than average yet not excessive size of her cock. Or perhaps it was simply her previous orgasms training her to feel better each time.

"Come on, go, go!"

"I'm ... mm!"

Twilight clenched onto her double's ass cheeks hard as she tipped over. The tip of her member flared up, and to Twilight, it felt as if it had doubled in girth as she spurted again.

Twilight moaned. She felt high and woozy as cum poured out of her vigorous rod. Her cock shot ropes into her double's asshole, and with so much force and power behind it that she couldn't keep from making a mess, cum splashing everywhere and getting all over her double's cheeks.

Twilight thought was she done, so she pulled out, where her cock was still hard and dripping. Every now and then it would flare up and give off another spurt, the pleasure of which made Twilight giggle. She couldn't think straight. There was only cum. Delicious cum, thick cum, glorious cum.

"That's it, little me," her double rose to her feet without paying any attention to the cum still dripping from various places on her body. "Didn't that feel so good?"

"Yes," Twilight said, wobbling.

"I think you've had enough fun for one day," her double said reassuringly. She took Twilight's arm. "Why don't we send you back and you can get some rest?"

"Okay," Twilight mumbled. At this point, she would have agreed to anything her double suggested.

Her double walked over to the mirror, the one that would take Twilight back to her reality.

"Bon voyage. Have a nice trip," her double wished as she let Twilight go.

Twilight stumbled through the mirror. Exhausted and unable to think straight, the first thing she did was climb onto her bed without thinking to try and clean herself off first.

Twilight awoke some time later, giving a yawn. Her nose wrinkled in disgust. What was that smell?

She looked down at her naked thighs and the memory of what transpired came flooding back to her. She blushed in embarrassment at having not gone to wash herself off first before sleeping.

"It's too bad I don't have a record of any of any thing," Twilight muttered to herself. "Even with her magic experience, I don't think Sunset would ever believe that I went and had sex with myself with a ... a ..."

Her eyes went wide as she realized she did have a record. The video camera. The camera she had set up for this exact specific purpose.

Giggling to herself, Twilight went over to the video camera and rewound the footage. Her jolly mood evaporated like a jolly rancher in hot water.

The only thing her camera showed was herself standing in front of a mirror, still as a statue and equally silent. There was no motion, no movement, no acknowledgement that she had ever done anything but just stand at the mirror and stare.

"What?" She quickly flicked through the footage, trying desperately to assure herself that it must have been a mistake, a glitch. Surely she hadn't imagined all of that? That said troubling things about her mental health.

No matter how far forward or back she went into the footage, nothing changed. It was her. Just her, and the mirror. No dopplegangers, no cocks, and certainly no sex of any kind.

"But ..." Twilight turned away from the camera, feeling dejected. It depressed her to think she just imagined such an event.

She did, however, get confirmation of the events, just not in the way she wanted. For when she looked down, she saw, to her surprise, that she still had the cock that her double had let her 'borrow.' It was flaccid, for what seemed like the first time, but the fact it was now obeying regular physiology was not enough assurance against the distress caused by its presence.
"You!" Twilight snapped at the mirror. She ran up to it and knocked on the glass like it was a door. "What did you do to me? Whatever it was, you better come out right now and fix it or I'll - I'll ..."

Twilight reared her fist back as if she was going to do something. What could she do? She couldn't risk breaking the mirror, as that might just make things worse. It could make the change permanent. It could release whatever evil spirit had first made the manifestation, freeing it to terrorize the world, no longer bound by its mirror prison.

Twilight sighed and deflated. She looked down again at her new cock. She then turned her attention to her breasts. She found the physiology implications of this unnerving. How was this going to affect her medical history? Did regular science even still apply to her with as much magic as she’d been around?

Twilight wondered why she hadn't spend more time studying bodies. If anything could help her right now, it might be that.

She sighed and resigned herself to her feet. Taking another whiff of the air and displeased by the result, she made her way to the shower, hoping her family wouldn't see her, and cleaned herself off.

After making sure she was spic and span and nice and clean, Twilight got dressed and headed out. She was going to see Sunset and tell her about what events had transpired. Perhaps she should have called or texted, but she was embarrassed that she had fallen for the trap and embarrassed at having a cock, and wanted to leave absolutely no record that anything of the sort had ever happened.

So was in that mindset that she set off, by herself, with nothing but her purse, phone, wallet, and house keys with her.

She walked in a rush, hurrying. She hoped to get this ordeal over with as quickly as possible. She passed Indigo Zap from her old school on her way over.

This would have been fine by itself, except Zap was playing frisbee with another student and rushed after the flying disc without paying attention to where she was going either. So it was inevitable that the two collided.

Zap bowled Twilight over, leaving them sprawled on the sidewalk.

"Hey!" Zap snapped. "Watch where you're going!"

"Shouldn't you be watching where you're going? After all, I'm just in a hurry, but you're playing sports. Shouldn't you be paying more attention to where your flying saucer thingie goes?"

"It's called a frisbee, you ... you ..." Indigo Zap went quiet, tilting her head in confusion. "What is that?"

"What's what?" Twilight asked.

"That." Indigo pointed to Twilight's crotch.

Twilight blushed. She saw that her cock was poking through her skirt, leaving a bulge. Worse, it was growing. Getting hard. Because of Indigo Zap.

Twilight didn't know why, but she found Indigo Zap attractive now. Perhaps her cock helped her awaken a closeted lesbianism in her, or, she suspected this more strongly, it was just so perpetually horny it would take any excuse to get hard and find someone to rail.

She looked Indigo Zap over again. She wasn't bad-looking. Twilight wouldn't use a strong word like gorgeous, or knock out, but she had a toned athletic frame, noticeable thighs, and a small athletic bust that nonetheless pushed through her tight shirt and was enough to tease Twilight.

Twilight shuddered, her horniness overtaking her. She wanted Indigo Zap. She needed Indigo Zap to come over and rut her, to take a big load of her cum and swallow it, just like the way her double had.

"You want to see?" Twilight teased.

"Sure," Indigo Zap said unsurely, with the slightest sense that was she going to regret this, but still went through with it.

Twilight pulled up on her skirt and down on her panties, letting her bulging cock spring up and startle Indigo. Indigo jumped back in surprise.

"That's disgusting!" Indigo said. "Since when did you ... did you always have this?"

Twilight shrugged. She didn't know why she shrugged when she knew perfectly well the answer was no.

"Ugh." Indigo stuck her tongue out in disgust and moved to turn away. Yet she turned back towards Twilight, as if drawn by an imperceptible force. She turned away again. She repeated this a few times.

"What is it?" Twilight asked.

"I don't know," Indigo said. She stepped away and rubbed a finger over her lips. "I ... I ..." she licked her lips, then puckered them up before thinking better of it.

That was enough to clue even a sex-dense clod like Twilight in on what was going through Indigo's mind.

"You want to try it?" Twilight teased with a smile. She wasn't sure what she was doing. She barely knew Indigo Zap, had even less reason to like her, yet she wanted nothing more for them to knit their bodies together and make a beast with two backs.

"I ... I want to suck it," Indigo admitted, licking her lips again. "I ... no. Yes. No." She turned her head back and forth, struggling with her decision.

"Well, which is it?" Twilight asked. "Yes or no?"

Indigo didn't answer.

"Come on," Twilight reached down and jiggled her cock up and down. "You know you want to."

What am I saying? Twilight thought. I don't talk like this.

Yet, her cock demanded she say whatever it took to get Indigo Zap to fall upon it.

Indigo looked out to the road. "Not here. Somewhere private. That bush, maybe. And put that thing away. People can see you, you know."

"Indigo?" Indigo's friend came over. "What's going on?"

"It's nothing," Indigo said, putting a hand on her friend's shoulder. "Something's just come up. Go get the frisbee. I'll be with you in a bit. I just need to take care of something with my old friend here." Indigo gestured to Twilight.

"Twilight Sparkle? But I thought you two hated each other."

"We do, which is why I would really appreciate you not mentioning this to anyone."

"Okay," her friend shrugged. She collected the frisbee, gave Indigo Zap an unsure look, then went down the street.

"Come on," Indigo Zap said. "Let's make this quick, before I come to my senses and change my mind."

"Whatever you say, beautiful."

"Please don't talk like that."

They went over to the bush and crouched down, hiding behind it.

"So ..." Indigo Zap said. "How does this work again?"

"First, I take out my ... um ..." Twilight still wasn't comfortable naming it. "And then, you suck until it cums."

"Right, right," Indigo Zap said. "Don't know why I asked that."

Twilight got herself ready, making sure her cock was out, its erection display proudly.

Indigo regarded with a conflicted expression. Her eyes were disgusted, but a string of drool from her mouth she was lusting for it.

She wiped her mouth with her sleeve. "Let's get this over with, Dorklight."

"Please don't call me that. Not if you want this." She pointed to her cock proudly.

"I might still change my mind," Indigo reminded her. But she got on all fours and moved her head towards the cock, opening her mouth wide. She took a deep breath and wrapped her lips around Twilight's member, sucking on it lightly and cautiously.

"I think you can do more than, Indigo Zap," Twilight said, petting Indigo Zap's hair. "I mean, it's not going to hurt you."

Indigo shrugged. She continued sucking, bobbing her head faintly up and down along the length of the thing.

Twilight found herself disappointed with the experience. It wasn't like with her double, when it was new and intense. Indigo Zap seemed content to go at a leisurely pace, making the buildup to orgasm unbearably slow for Twilight.

Twilight pursed her lips, wondering what to do and what to make of this. Should she say something? Or just be patient?

A twitch from her cock told her the answer was patience. This issue settled, she placed her palms on the grass behind and leaned back, letting Indigo Zap nurse the cock at her own pace.

Left to herself and without her cock distracting her, Twilight's mind wandered. She began to consider the strangeness of recent happenings. Aside from all the business with her double in the mirror, now she gets a cock, and not only that, but Indigo Zap is happy to offer her a blow job at first glance? And she agreed to it? Something was going on here.

She became distracted from that thought by feeling another twitch in her rod. Indigo had finally brought it forward a stage, and Twilight soon felt a familiar pressure building up inside.

"Yes, that's it, Indigo Zap, that's it." Twilight reached over and tried to grab Indigo Zap's hair, like she did with her double, but Indigo sensed this and swatted her hand away.

"Right, no touching," Twilight concluded. With nothing to do but wait, she looked around. It was a nice day out. The sky was clear and birds were cheaping.

Admittedly, not the kind of weather she was would associate with rough, unprotected and sudden sex.

"Indigo Zap? Can I ask you a question?" Twilight started. "Why did you agree to ... why did you want - hoo!"

Twilight lost her train of thought, feeling her cock throb powerfully, thrumming in Indigo Zap's throat. It wouldn't be much longer now.

Twilight let out a long string of moans as she felt her cock prepare to blow. Indigo Zap reached up and put a hand over Twilight's mouth so she wouldn't draw people to their location and let them be discovered.

Twilight closed her eyes and let herself fade into her orgasm. Despite the start of it, the finish was just as good as it was in the mirror, with her tip flaring as it spurted cum into Indigo Zap's mouth, filling it up with gooey spunk.

Indigo's eyes widened. She pulled away and stared off into space, dumbfounded while cum dripped down her chin.

"Indigo?" Twilight asked with concern.

"M-more," Indigo stammered. "I need more!"

"More? More what-"

Indigo brought her mouth around Twilight's cock again, going at it furiously. She sucked the tip with her lips, leaving most of it out so she could stroke the length with her fingers. She stroked fast and hard, and Twilight didn't know how long she could hold out.

"Indigo, I think I'm ... I'm going to ..."

Twilight sighed. She fell under a spell as she climaxed again. As she sat there, squirting and pumping her former classmate and current frenemy, all her doubts and worries faded away. There was nothing to worry about, nothing to fear. All she had to do was relax and think about her cum. About her big, strong, hard cock, and how good it could make her feel. How good it could make others feel.

Indigo's throat bulged as she gulped the cum down like drinking from a bottle, and when she pulled away her stare was even spacier than before. Her mouth gaped, and the cum sliding down her chim had the effect of making her look like a plodding zombie.

"Indigo?" Twilight asked. "Are you okay?" She reached out a hand.

Hearing her name seemed to bring Indigo Zap back to her senses. She shook her head. "Yeah, yeah, I'm fine. It's just ... this is so new to me." She tentatively rubbed at her chin.

"Yeah, I know what you mean," Twilight said. "It's new to me, too. Honestly, I don't fully understand how this happened myself." She gestured to her crotch.

"Yeah," Indigo ripped a blade out of grass out and used it to wipe the cum off her chin. "You should probably go work on that. I bet Sunbacon can help you with that. She knows about magic stuff. Go see her."

"I will," Twilight said, copying Indigo Zap and using the grass to clean herself. "In fact, I was on my way to go see when I bumped you into and ..." Twilight paused and got concerned. Why had she stopped anyhow? Surely she hadn't set out with the intention of having sex with Indigo Zap ... with getting her delicious cum all over Indigo's throat, mm ...

Twilight shook her head. She was getting distracted, and she needed to see Sunset, quick.

"Well, see you later, I guess," Twilight said. She waved goodbye to Indigo Zap and ran off, hurrying to get to Sunset before anything else strange could happen.

As she was walking, Twilight found her shirt a little tight. She tried to pull down, but a gap formed between it and her navel. Not enough to show off her belly button, but enough to let a breeze.

"Strange," Twilight thought, cupping one of her boobs to see if maybe her bra was the problem. "I could have sworn this shirt fit when I put it on ... I'm sure it's nothing."

Twilight inhaled.

"Nothing that Sunset can't fix, at least."

With that, she headedon her way.

Author's Note

Nothing much to say about this one, other than commissions are open!

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