One fine day in Ponyville, the young but promising Alicorn Princess, Twilight Sparkle, was conversing with her friends about her planned visit to the high school alternate universe of Canterlot High.
Twilight Sparkle: In a few hours, I am planning to go visit Canterlot High, long enough to determine that the version of me there is coming along in learning about friendship. If she's truly anything like me, I have a feeling she'll be just fine, but I'm always glad to prove my theory!
Applejack: So you're just leavin' us to deal with that ne'er-do-well we defeated and captured in the haunted castle last week?
Twilight Sparkle: Who, Black Buck? He's not really such a bad pony; he just has had a bad life, and needs us to give him a good one! I may be going away for a bit, but I also have confidence in your abilities to show him the same sort of love you've shown me, and Princess Luna, and Discord, and Gilda the Griffin, and the Changelings, and I shared with Sunset Shimmer and Starlight Glimmer!
Rainbow Dash: We get it! Friendship is Magic!
Rarity: Why Rainbow! Is that any way to speak of our mission to help all those in need?
Rainbow Dash: Er, what I mean is, we won't let you down, Twilight!
Pinky Pie: So Twilight, are you gonna use that fancy pancy machine you used before? Because last time it started sparking and smoking and looking not safe for using!
Twilight Sparkle: You're right, Pinky, the machine's design wasn't scientifically sound.
Rainbow Dash: I knew something sounded iffy about the way you were describing it!
Twilight could only grin sheepishly in response.
Twilight Sparkle: Yes, well luckily, I also am a sorceress! I have just learned of a new magic spell for traveling to other realms, and I think this mission will be the perfect time to test it out!
Fluttershy: Well, good luck. I'm afraid I need to go feed the animals, so I'll say bye now.
Applejack: Yeah; I think a lot of us need to go off and our own stuff, but let us know later how it went!
A few hours later, Twilight made announced to ponies near the Ponyville Library that she would do the warp portal spell there for them to watch. She made her way into the center of a dirt street, her horn beginning to glow, and she began her spell.
Twilight Sparkle: Open a link to a realm where I'll find, a being who walks upright, with a mane quite like mine!
This rhyme having been recited, the vibrating, glowing, electrical-looking magic swirling around Twilight's horn shot from it about meter ahead, expanding to create a magic portal. Through that portal, Twilight could see another realm. It did not look quite like anywhere she'd been before in the realm containing Canterlot High, but alternate universes are big and diverse (theoretically anyway; somehow high school alternate universes don't often seem to extend far past the high schools) so Twilight thought little of it as she proceeded to walk through the portal-and was nearly struck by an open-topped pink hummer that popped out of a secret passageway in the ground!
Twilight flapped her gorgeous, magical alicorn wings and ascended just in time to evade this unique vehicle and the two human-looking girls who were riding in it—one of whom, indeed, had hair bearing a strong resemblance to Twilight's mane, but this was not the doppelganger she recalled in Canterlot High. By the time Twilight had turned around to get another look at the vehicle and its riders, it had barreled through her magical portal, which then closed, and instead, she saw people being chased around by a monster that looked and especially smelled like it was made of dog urine, and a rather mass-produced-looking city skyline in the distance.
Meanwhile, the pink hummer emerged from the portal into Ponyville, startling ponies who had watched Twilight cast her spell; they jumped further away from the street in fright, and some even ran and hid! Meanwhile, the thing let out a screech as its occupants looked around in confusion and then forward again, uttering a foreign-sounding word as it proceeded to crash straight into the Ponyville Library!
Ponies slowly began to approach the crashed vehicle and its occupants as they continued to take in their surroundings; the blonde driver looking particularly perplexed.
Panty: What the fuck was that wingy thing we almost crashed into, Stocking?!
Stocking: Looked like some sort of violet horse!
Panty: I was hoping you had some more expertise than that!
Stocking: What is that supposed to imply about me?!
Panty: Just figured you're into that sort of whimsical shit. Also, did we just go through a warp portal?
Just then a high-pitched voice to Panty's right made her jump a bit.
Pinky Pie: Hi there! I'm Pinky Pie!
Panty: Holy shit! Don't startle me like that, you little bitch! I think you are one, anyway…
Stocking: She looks like another horse; not a sort of dog!
Panty: It's an expression, dipshit! I was saying I didn't know for sure if it was female!
Pinky Pie: That thing looks neat! Could I have a ride?
Panty was initially baffled by how unfazed this pink pony seemed by her hostile remarks, but soon grinned, and then gestured back towards Stocking.
Panty: You'll have to ask her, but I get the feeling she'll say yes!
Stocking: You don't know me as well as you think, Panty!
Pinky Pie was persistent, and seemingly oblivious to the sexual pun.
Pinky Pie: Awww, pretty Pinky Pie pleeeeeeease? If you give me a ride, I'll bake you up a bunch of yummy cakes!
Stocking's face lit up at that suggestion.
Stocking: You've got a deal, lady! Let her aboard, Panty, and rev up See-Through ag—wait; you were actually talking about riding in our hummer; right Pinky Pie?
Pinky Pie: Well, if that big pink car of yours is called a hummer, then I was! If it isn't called a hummer, I'm not sure if I was! It's one of life's many great mysteries!
Panty: Fuck that; it's more like one of a stoned college student's great metaphysical asspulls!
Stocking: Quit bitching and drive Panty. Where can we get those cakes, Pinky Pie?
Pinky Pie: Back up and turn left, then just follow that road and we'll be there in no time! Oh, and yes; I'm female. Not sure if I'm a bitch, though! I guess that might be another mystery!
Panty: Probably not for long!
Panty began driving in the direction specified by Pinky Pie, but she couldn't help but notice that a lot of the other ponies had started to congregate by the street, to watch the spectacle of the new visitors and their pink hummer, See-Through. So maybe midway through the trip, she hit the brakes, unbuckled herself and leapt onto the back of See-Through, full of naughty resolve!
Panty: Like what you see, horsies?! Get a load of this!
With that, Panty yanked off her dress, swirling it around in the air like a hula hoop or a gymnastics ribbon, then threw it to the crowd. A human probably would have caught it; none of the ponies bothered, but they gawked nonetheless, though maybe not with the same motives that would lead humans to gawk. Panty didn't care—possibly, Panty didn't realize-and proceeded to do the same thing with her bra. She had just taken off her titular panties, when Stocking, who had gotten into the driver's seat, got See-Through rolling again, which caused Panty to fall off, face-first into the dirt road! Panty had little choice but to run after her them, naked.
Panty: Come back here, you rascally bitch! Don't leave me here naked with these fucking freaks!
Fortunately, it wasn't very long before See-Through arrived at Pinky Pie's shop, Sugarcube Corner, which meant Panty could catch up to them, eventually.
Inside, Pinky Pie wasted little time getting out some ingredients and a bowl, turning on the oven, and to Stocking's surprise, launching into song.
Pinky Pie: [Sung] It's really fun to make a cake…the first step is you've gotta take…some tasty things to mix, then bake…a whiiiiiiiile! Then wait some time until it's done…then serve it up and start the fun…it's certain to make everyone…there smiiiiiiiile!
Stocking: Singing while baking? That sounds fun; let me try! [Sung] My favorite thing of all to eat…is anything that's nice and sweet…so let's bake up that sort of treat...for luuuuunch! The batter's mixed, the oven's set…but it's not finished baking yet…so while we wait why don't get…some puuuuunch?!
Pinky Pie clapped.
Pinky Pie: Hey; you have a really pretty voice, Stocking! I'd love it if you gave my friend Scootaloo some singing lessons!
Neither had seemed to notice that Panty had come in through the door a while ago.
Panty: Hmph, of course my sister's voice sounds good to someone who sounds like Nikki fucking Minaj on helium!
Stocking: Quit party-pooping, Panty! Make yourself useful and go buy that punch for us! Or else we won't let you have any lunch!
Pinky Pie: Hey wait, I don't think that's ni—
Stocking: Shut up Pinky, you've landed on my good side; don't jeopardize that!
Panty: Ohhhhh, shit's gettin' real! Stocking's gonna fuckin' cut ya, Pinky!
Stocking: Not if I cut you first, you shit-stirring bitch! Now fuck off already and get that punch!
Panty: Fine; I'll get your fucking punch. Maybe it'll have alcohol...
The plot thickens! Will Panty get the punch?! Will it have alcohol? Tune in soon to find out!
To answer the question, yes; I know Stocking and Scootaloo are voiced by the same woman in Japan. I learned that slightly before beginning work on this fanfiction, many of whose key points I'd planned out in advance, and wanted to reference it somehow, but I couldn't figure out how to work Scootaloo herself into this story.
I've written further than this chapter in this story, and I must say; Stocking is a harder character to write in this scenario. She likes sweets. Pinkie Pie likes sweets. Common ground can form along those lines, but not necessarily comedy. Panty is easy to write in this; she's got a personality that doesn't click with Ponyville and hilarity ensues in the near future. I'd like to use Stocking a bit more than I am already, though, so tell me what you people would like to see that you think would work with her. Note, though, once again, I have a lot of this planned out, so I can't promise anything.