It was Pinkie Pie that made the first move. She leaped over to the table and let out a shrill squeal of delight.

"Hi! Are you really a party pony?? I'm a party pony, too! I heard you like balloons and confetti and cannons! Isn't it so cool?! I do too!!! My name's Pinkie Pie! Yours is Twinkle Star, right?? I know cause I heard your brother say it! He is your brother right??? I always wanted a brother! So you like pranks too??! That is sooooo cool!!!!"

"Pinkie Pie!" Starlight interrupted in exasperation. "Don't be rude!"

But Twinkle Star was up and facing the pink pony with a wide grin.

"Oh my gosh! You like parties and pranks and cannons too?! How cool is that!" She squealed.

And the two were off on the subject of parties and such. Starlight looked at Blue Moon, who looked as exasperated as she felt.

"Lemme guess," he said. "That's your crazy, party loving, prank playing, cannon blasting, drives-you-totally-nuts-at-every-turn sister?"

"Correct on all points except one." Starlight said wearily. "She's not my sister. She's one of my best friends. If she were my sister, or any relative at all, she probably wouldn't even be here right now. She'd either be on the moon, in jail, or..." She trailed off.

"Or at the bottom of a shallow grave after suffering an 'accidentally' fatal blast from her own cannon?" Blue Moon said flatly.

"Exactly." Starlight huffed. She stuck out a hoof. "I'm Starlight Glimmer."

"Blue Moon." He said, extending his own hoof and shaking hers. "And I guess you already heard my sister's name."

"And you already heard my friend's name." Starlight answered.

The two of them took a seat at the table, their hyperactive companions too busy prattling on about the thousands of combinations of cupcakes to notice. Twinkle Star was apparently also good at baking.

They struck up a conversation, one much calmer than that of the other two, and Starlight explained their reason for being in Manehattan. Blue Moon listened with interest to the tale of the Friendship Map.

"So this map sent you to solve a friendship problem?" He questioned curiously.

"Yep."

"And you believe my sister and I are the ones with this problem?"

"Again, yes."

Blue Moon glanced at Twinkle Star before rubbing his head and sighing wearily.

"That makes perfect sense to me." He said.

"Uh, it does?" Starlight frowned. "Usually the subjects of the problem don't want to accept they have one."

"Oh, we have one." Blue Moon said. "We used to be closer than two pages of a book, but lately....well, all we do is fight. She drives ponies away from our shop with her incessant pranks and jokes...and that stupid cannon. I swear, if she sets that thing off one more time..."

At that precise second, there were two simultaneous explosions accompanied by shrieks of glee. Starlight and Blue Moon spun in their seats to find that the two party loving ponies had blasted each other with their cannons, and were now happily jumping up and down as stray confetti floated down on them.

"See what I mean?" Blue Moon muttered, as a random string of confetti landed on his head.

"Ohhhhh yes." Starlight said. "I see exactly. And um, as you can see, Pinkie is just as bad. If not worse."

"You don't have to live with her though." Blue Moon growled. "I live with Twinkle!"

"Ouch." Starlight muttered, wincing in sympathy as she pondered living with a party crazed pony all the time.

Quite frankly, being around Pinkie at some point every single day(whether for two minutes or an hour)was bad enough.

"So why does she say its your fault that the customers are being driven away?" She asked.

Blue Moon shrugged. "I don't know."

"Of course you know!" Twinkle Star appeared next to him, Pinkie at her side. "You're rude and obnoxious and use offensive language!"

"I do not!"

"Yes, you do! You're always yelling at me and calling me crazy and nuts and weird and sometimes even stupid because I like to fire my cannon and play pranks and tell jokes! That's offensive! And it makes me cry! Alot!"

"But you are crazy! And that cannon of yours is a menace to our peaceful society!!! It needs to be destroyed is what it needs!"

Twinkle Star promptly burst into tears, and Blue Moon suddenly found himself staring into a pair of the most icy blue eyes he'd ever seen. And a voice as cold as those eyes spoke, directing its wrath at him.

"Now you listen here, you mean meany pants!! Making people happy and wanting them to laugh and smile is perfectly ok! And party cannons are the best!! How dare you say they should be destroyed?! And how dare you make your sister cry?!"

Starlight leaped to the stunned stallion's rescue.

"Pinkie Pie, ease up." She said. "You'll make this worse. You don't solve the problem by yelling at them."

Pinkie shrugged. "Eh, it was either that or blast him with the full power of my party cannon." She said. "Yelling seemed better."

Starlight rolled her eyes. "Pinkie, I have never seen the full force of your cannon do anything worse than completely cover a room in the biggest mess imaginable and possibly knock a pony over."

"Starlight." Pinkie leaned close to her friend, suddenly completely serious. "You have never seen the actual full force of my cannon. And believe me when I tell you, you don't want to. I mean, you really don't want to. EVER."

Starlight blinked. "Why?" She asked, suddenly very afraid of the answer. "Would it destroy an entire building in Ponyville"

"More like destroy an entire city the size of Canterlot...times three." Pinkie said cheerfully.

Starlight and Blue Moon locked eyes. The stallion gulped.

"I am suddenly very, very glad she yelled at me." He said.

"You know what? Me too." Starlight said, shivering. "I'm not even sure how its possible to destroy an entire city with one cannon, but, um, I don't really want to know."

"Ok, so how do we solve this friendship/brother-sister problem??" Pinkie asked, bouncing.

"We need to try to get you two to work out a compromise." Starlight said, looking from Blue Moon to Twinkle Star and back. "Good friendships always require compromise."

"I have one!" Twinkle Star announced. "How about Blue Moon says he's sorry for making me upset, and promise to let me keep up my fun stuff?"

"Why do I have to apoligise?! You started it!" Blue Moon said.

"I did not!"

"You did too!"

"Did not!"

"Did too!"

"Pitch the cannon and we'll talk!"

"No! The cannon stays!"

"Ugh!! Twinkle...!"

"The cannon STAYS!!!!!"

The siblings locked eyes in an intense staring contest. Starlight rubbed her head.

"Pinkie Pie, I think we're gonna have ro split them up and deal with them seperately for now."

Getting now answer, she looked to find Pinkie standing almost between the two, acting as staring contest monitor.

"Careful! Don't blink! First one to blink loses! Smiling is totally allowed though!"

"Pinkie Pie!!" Starlight said.

"What???"

"Did you even hear me?!"

"Yeppers! You take Blue, I'll take Twinkle!" Pinkie giggled as she suddenly swooped in and whisked Twinkle Star away from her brother and out the diner door.

"Pinkie, wait! We shouldn't split-" The two were gone. "-up."

Starlight groaned, feeling the beginnings of a very massive headache.

"Uh, are you ok?" Blue Moon asked.

"Not really." Starlight replied. "Pinkie is gone. With your sister. And at least two cannons. And a very endless supply of confetti."

"Sis has a good amount, too."

"In other words, all of Manehattan could end up looking like a multicolored snowstorm hit."

"Um, yes?"

"Oh wonderful."

And Starlight grabbed Blue Moon in her magic and rushed out the door to put an end to the Double Pinkiepocolypse before dozens of innocent ponies succumbed to confetti and cupcake attacks.

And certainly before the entire city of Manehattan crumbled before the never before witnessed might of the full power of Pinkie's cannon.

She heard an explosion in the distance, followed by faint yelling. She paused just long enough to drop Blue Moon, then started running towards the commotion, the stallion right behind her. As they rounded a corner, a group of ponies rushed by, and Starlight snagged one in her magic.

"Let go!" The obviously nervous mare panted. "Two crazy ponies! Cannons! Cupcakes!! Mayhem!"

Starlight released her and she ran.

"My sister and your friend?" Blue Moon asked.

"Yep."

"We have to stop them!"

"Yep."

"Do you have a plan??"

"No, I do not."

"What?!"

Starlight moved closer.

"Stand still. I'm gonna try a modified teleportation spell that ought to take us directly to wherever they are."

With a flash, they teleported to the next location, just in time to see the next thing Pinkie and Twinkle Star had in mind.

Starlight and Blue Moon gulped.

"Uh oh." They said in unison, before there was a massive explosion and a wall of white, pink, purple, red, blue, green, and various other colors rushed at them.

"Gaaaaaaah!!!"

Thud.

Stars whirled around their heads before everything got incredibly blurry. There was a taste of sticky sweetness in their mouths, and they got a glimpse of two giggling ponies, and then everything went black...

Author's Note

Eeyup...there's another chapter coming