Let's start with the My Little Pony side. Twilight and her friends are walking home from an adventure involve them beating a dragon who had tried to kidnap Spike. Rainbow and AJ layed the smack down, and AJ tied him up using a lasso covered in metal thanks to Twilight. Fluttershy tried reasoning, but almost got herself eaten. Rarity didn't want to get her hooves dirty, and Pinkie used a giant cupcake to distract him. They were all scuffed (except Rarity), dirty, and on their way home. They couldn't resist looking for a faster way to get home.
Twilight: We've been walking for two hours and NO SHORTCUT!
Rainbow: You can't expect one to just pop up out of nowhere-ow!
Pinkie: That one just did!
AJ: Where the hay did the green pipe come from?
Fluttershy: I don't know if it's a shortcut...
Rarity: Sure beats traveling on dirt, darling. Let's go! *jumps in and disappears*
Rainbow: WHOA!! Where'd she go? *looks in* Hello? Where did she go?
AJ: Get in there and find out for yerself! *pushes her in*
Twilight: That was so mean! For that, in YOU go! *uses magic to toss her in*
Fluttershy is standing there wondering what just happened.
Pinkie: *jumps in* See you later!
Twilight looks at Fluttershy, who is shaking and scared for her life.
Twilight: *holds Fluttershy's hoof* Shall we go after them together?
Fluttershy: Yes....
Twilight uses magic to levitate herself and Fluttershy into the green pipe. They fly through it at blinding speed. They hear their friend's voices, knowing they were close behind.
Rainbow: *in total darkness* I've never ventured into a sewer, but this is totally awesome!
Rarity: This is weird. The pipe is totally water-free!
AJ: This is far beyond fast!
Twilight: This wasn't a good idea...
Fluttershy: *screaming at the top of her lungs* SWEET MOTHER OF CELSTIA, MAKE IT STOP!!!
They all fly out another green pipe and land on the ground.
Rainbow: Let's do that again!
Fluttershy: Oh, no! No. no. no. NO!!!
Twilight: Stay together. We don't know what this world is.
Birdo, on the other hand, is ready to to take her Zip Zip out for a free ride, she goes at an easy pace, until she see the main six!
Birdo: Huh? *wham!* What kind of ponies are they?
Rainbow: *sees Birdo on her Zip Zip* What is that pink ugly thing? Why is is riding a motorcycle?
Birdo: Who you calling ugly? At least I don't have hair that makes me look stupid. And I'm hairless!! This isn't a motorcycle. It's a mini-bike called a Zip Zip!!!
Rainbow: STUPID!? My hair is awesome!! That's it, you freak of nature! I'm coming to kick your pink butt! *gets hit with an egg* What the hay!? Throwing cheap shots, are ya? Taste the rainbow! *charges at her at an insane speed*
Twilight: Nice one. Now everyone will think we're violent!
Birdo grabs Rainbow by her hoof and slams her on the ground back and forth, then body slams her, then finishes with a leg lock.
Rainbow: Hey, hey! Easy. Uncle!
AJ: Wow, she never cries uncle or has cried uncle.
Birdo: I think we're on the same side now!
Twilight: She got outta hand. I'm Twilight, and these are my friends: Rainbow Dash, Applejack, Pinkie Pie, Rarity, and Fluttershy. We entered a shortcut through that green pipe in an attempt to get home faster...
Birdo: Yeah, it's hard telling where they go. Hey Yoshi, check this out!
Yoshi: Eh? WHOA! What kind of color ponies are they? *gets greeted by Pinkie Pie* How'd you get in?
Pinkie: Front door was unlocked.
After a nice conversation, Twilight breaks into a long explanation about where they came from, and Birdo looks rather interested.
Birdo: What say you hang with us for a while?
Twilight: Sure! We should get to know each other more, then I can tell you what I know.
So they hang out, doing fun things together. They play tennis, race in go-karts, and other things.
Twilight: We've been walking for two hours and NO SHORTCUT!
Rainbow: You can't expect one to just pop up out of nowhere-ow!
Pinkie: That one just did!
AJ: Where the hay did the green pipe come from?
Fluttershy: I don't know if it's a shortcut...
Rarity: Sure beats traveling on dirt, darling. Let's go! *jumps in and disappears*
Rainbow: WHOA!! Where'd she go? *looks in* Hello? Where did she go?
AJ: Get in there and find out for yerself! *pushes her in*
Twilight: That was so mean! For that, in YOU go! *uses magic to toss her in*
Fluttershy is standing there wondering what just happened.
Pinkie: *jumps in* See you later!
Twilight looks at Fluttershy, who is shaking and scared for her life.
Twilight: *holds Fluttershy's hoof* Shall we go after them together?
Fluttershy: Yes....
Twilight uses magic to levitate herself and Fluttershy into the green pipe. They fly through it at blinding speed. They hear their friend's voices, knowing they were close behind.
Rainbow: *in total darkness* I've never ventured into a sewer, but this is totally awesome!
Rarity: This is weird. The pipe is totally water-free!
AJ: This is far beyond fast!
Twilight: This wasn't a good idea...
Fluttershy: *screaming at the top of her lungs* SWEET MOTHER OF CELSTIA, MAKE IT STOP!!!
They all fly out another green pipe and land on the ground.
Rainbow: Let's do that again!
Fluttershy: Oh, no! No. no. no. NO!!!
Twilight: Stay together. We don't know what this world is.
Birdo, on the other hand, is ready to to take her Zip Zip out for a free ride, she goes at an easy pace, until she see the main six!
Birdo: Huh? *wham!* What kind of ponies are they?
Rainbow: *sees Birdo on her Zip Zip* What is that pink ugly thing? Why is is riding a motorcycle?
Birdo: Who you calling ugly? At least I don't have hair that makes me look stupid. And I'm hairless!! This isn't a motorcycle. It's a mini-bike called a Zip Zip!!!
Rainbow: STUPID!? My hair is awesome!! That's it, you freak of nature! I'm coming to kick your pink butt! *gets hit with an egg* What the hay!? Throwing cheap shots, are ya? Taste the rainbow! *charges at her at an insane speed*
Twilight: Nice one. Now everyone will think we're violent!
Birdo grabs Rainbow by her hoof and slams her on the ground back and forth, then body slams her, then finishes with a leg lock.
Rainbow: Hey, hey! Easy. Uncle!
AJ: Wow, she never cries uncle or has cried uncle.
Birdo: I think we're on the same side now!
Twilight: She got outta hand. I'm Twilight, and these are my friends: Rainbow Dash, Applejack, Pinkie Pie, Rarity, and Fluttershy. We entered a shortcut through that green pipe in an attempt to get home faster...
Birdo: Yeah, it's hard telling where they go. Hey Yoshi, check this out!
Yoshi: Eh? WHOA! What kind of color ponies are they? *gets greeted by Pinkie Pie* How'd you get in?
Pinkie: Front door was unlocked.
After a nice conversation, Twilight breaks into a long explanation about where they came from, and Birdo looks rather interested.
Birdo: What say you hang with us for a while?
Twilight: Sure! We should get to know each other more, then I can tell you what I know.
So they hang out, doing fun things together. They play tennis, race in go-karts, and other things.