I recommend you guys get some popcorn/Doritos/ice cream/ etc for this chapter, it is going to be long.

Dipper and Xander are seen putting on their Tuxedos.

"To quote the great Barney Stinson, tonight is going to be legend-wait for it-dary," said Xander.

"Who is he again?" Dipper asked.

"He was Neil Patrick Harris' character on How I Met Your Mother," said Xander.

"Oh right," said Dipper, "Didn't that also have Alyson Hannigan from Buffy the Vampire Slayer?"

"Yes," said Xander as he is putting on his tie.

Meanwhile, with Mabel and Rachel:

"And remember, don't let her eat the entire box of gushers, she may look and act like me, but I don't want her to fully become me," said Mabel.

"I'll try my best," said Rachel.

Just then Bryanna came in holding Pooh Bear.

"Mommy!" said Bryanna.

"What is BryBry?" Mabel asked.

"Hug Hug," said Bryanna.

"Oh right I told her she isn't going to be tucked in by me tonight," said Mabel.

Mabel gives Bryanna a big hug.

"Don't worry," said Mabel, "you get to spend tonight with..."

"Nana!" said Bryanna as she ran to Rachel.

"I promise her we watch movies tonight," said Rachel, "With lots of...."

"Popcown!" said Bryanna.

"Oh the baby talk," said Mabel.

"Hey with her its a cake walk," said Rachel, "unlike Comet and your family of pigs."

"Just be like I found a happy home for 4 of the piglets," said Mabel, "Bryanna didn't want to let go of Waddles Jr."

"Waddles!" said Bryanna.

Someone then knocks on the door.

"I'll get it," said Rachel.

Rachel opens the door to see Pacifica is a purple dress.

"Oh Pacifica that dress it beautiful," said Rachel.

"Thanks," said Pacifica, "I got it at H&M."

"Oh I love that store," said Rachel.

Dipper and Xander then walk downstairs.

"Alright we are set," said Dipper.

"Wait!"

Patrick runs in with a camera.

"We need prom pictures!," said Patrick.

"Everyone line up," said Rachel.

Dipper stand a next to Pacifica, as Xander stood next to Mabel.

Patrick takes the first set of of pictures.

"Can we do a stupid one?" Mabel asked.

"Does a monkey like bananas?" Patrick asked, "Of course."

"Everyone say something stupid," said Mabel.

"Something Stupid!"

*Camera Flash*

*Honk, Honk*

"Ooh the party bus is here," said Pacifica.

Dipper, Pacifica, Mabel, and Xander walk into the party bus.

"Damn!" said Xander.

The party bus has two 45inch TVs, neon lights, and a mini bar full of snacks and sodas from different countries.

"Is this a bus or heaven?" Mabel asked.

"I don't care all I know is I call the Ramune Grape!" said Xander.

"Ramu-what?" Dipper asked.

"Japanese soda," said Xander.

"Ooh," said Dipper.

The bus started moving.

The bus then stops at Candy's place, then Candy and James walk on.

"Woah candy, you look fabulous," said Mabel.

"Thanks, but your even more fabulous," said Candy.

The bus starts moving again.

"Woah hello," said James, "Didn't expect this to move that fast."

"Onto the final stop," said the driver.

The bus stops at Madison's house then Jake and Madison walk in.

"Hey guys," said Madison.

"Wow lovely dress Mads," said Pacifica.

"Thanks Mabel," said Madison, "I had a little help from someone."

"Did Jake make it appear out thin air?" Xander asked.

"Oh hell no when I make clothes it would be something even Lady Gaga wouldn't wear," said Jake.

"It was a different someone," said Madison, "Or should I say SOMEONES!"

"SURPRISE!"

They all turn to the door to see Grenda and Morgan.

"Oh My Gosh guys I thought you guys were in San Francisco?" Mabel asked as she came in for a hug.

"Well actually that was last month," said Morgan, "But in other news I already graduated."

"Lucky," said Candy.

20 minutes later they arrived at the Location of Prom, The Gravity Falls Hampton Inn.

They walk out and read the sign, "Welcome to the Gravity Falls High School Prom! (We would've added more ! But we ran out)"

"Was the stuff in the parentheses really necessary?" James asked.

"God I hope not," said Xander.

They walk inside to see a buffet full of hors d'oeuvres.

"Ooh Vermont white cheddar cheese," said Mabel.

Later that night:

Everyone is seen dancing to the music when all of a sudden...

"Alright kids, its time to announce your Prom King and Queen," said the Principal.

Everyone on the dance floor freezed.

"Alriguy and your Prom Queen is......Mabel Pines," said The Principal.

Mabel gasp in happiness, then she runs up to accept the crown.

"Whoever the Prom King is, he better not touch my woman," said Xander, "or else *cracks knuckles*"

"And your Prom King is.....Xander Sanchez," said The Principal.

"GET HIM! Wait, WOOHOO!" said Xander.

Xander walks up to receive his crown.

The slow song starts playing. (Song above, lyrics below)

All the couples get onto the dance floor holding hands.

When I was younger I saw my daddy cry
And curse at the wind.
He broke his own heart and I watched
As he tried to reassemble it.

And my momma swore
That she would never let herself forget.
And that was the day that I promised
I'd never sing of love if it does not exist.

But darling,
You are the only exception.
You are the only exception.
You are the only exception.
You are the only exception.

Maybe I know somewhere deep in my soul
That love never lasts.
And we've got to find other ways to make it alone.
Or keep a straight face.

And I've always lived like this
Keeping a comfortable distance.
And up until now I have sworn to myself
That I'm content with loneliness.

Because none of it was ever worth the risk.

Well you are the only exception.
You are the only exception.
You are the only exception.
You are the only exception.

I've got a tight grip on reality,
But I can't let go of what's in front of me here.
I know you're leaving in the morning when you wake up.
Leave me with some kind of proof it's not a dream.
Oh-oh-oh-ohhh.

You are the only exception.
You are the only exception.
You are the only exception.
You are the only exception.

You are the only exception.
You are the only exception.
You are the only exception.
You are the only exception.

And I'm on my way to believing.
Oh, and I'm on my way to believing.

After the slow dance some couples went into the hotel rooms for a little "Private Time," except for Xander and Mabel chilling in the hallway eating snacks from the vending machines.

"I really can't believe the school got rooms in the hotel for private time," said Xander.

"Well apparently they want to give certain teens some alone time," said Mabel, "Something we had when we created Bryanna."

"Hey we were on the brink of death when we did," said Xander.

They were interrupted by the sound of a couple, socializing, in the room next to them.

"Jeez some people just can't keep it in their pants," said Xander.

"I feel sorry for whoever is in there," said Mabel.

Just then Dipper and Pacifica walk out the room in wrinkled clothes, they then turn their heads to see Xander and Mabel.

"Don't judge us," said Dipper.

"Its prom, its supposed to get weird," said Pacifica.

They then walk away.

Xander then gets two Pitt colas for him and Mabel.

"We're going to judge them aren't we?" Mabel asked.

"Oh yeah," said Xander as he passed her a can of soda.

Okay before I end this chapter, I just want to say, sorry for it getting lemony at the end, but it's going to work into the last 8 chapters, so be prepared people. Decode the cipher below and I'll see you next time!

KROG RQWR BRXU KDWV, WKLV VKLW JRW UHDO!