Cipher answer:
KROG RQWR BRXU KDWV, WKLV VKLW JRW UHDO!➡HOLD ONTO YOUR HATS, THIS SHIT GOT REAL!
Yes I was foreshadowing, this is going to be a juicy chapter. Here we go!

Dipper is seen at the kitchen table with his phone in his hand.

Just then Xander walks in and grabs something from the freezer.

"Ooh Rocket Pops," said Xander.

Xander grabs the red, white, and Blue Popsicle then looks over to Dipper with a confused look on his face..

Xander sits down.

"Rocket Pop for your thoughts?" Xander asked offering Dipper a rocket pop.

Dipper takes the frozen treat.

"Pacifica hasn't talked to me in 3 days," said Dipper, "She said she's been sick because she's been throwing up every morning but she is also craving some weird stuff like chili fries with hot dogs in them. She's been like that since prom."

Xander freezes for a second.

"Throwing up in the morning and odd cravings," said Xander, "Do you know what this means?"

"That this dann thing doesn't work at all?" Dipper asked.

"No Doctor Brown from Back to the Future," said Xander, "you got your fiance pregnant."

"What? Dude your crazy!" said Dipper.

"If I were crazy I would have the name Sheldon Cooper, even if his mom got him tested," said Xander, "Do I know the signs I was there for Mabel when she was pregnant."

"That's because you caused it," said Dipper.

"Again you do stupid stuff on the verge of dying," said Xander, "anyway I remember when hearing you guys doing 'that' in the hotel room at prom, Mabel and I smelled your love."

"You guys heard us?" Dipper asked.

"Everyone heard it, people in the Thai restaurant next to the hotel heard it," said Xander.

"Whatever, Pacifica is not pregnant," said Dipper as he left angrily.

Just the Will and Quill show up out of nowhere.

"What the hell is his problem?" Will asked.

"That mini ciphers is called denial," said Xander, "basically he is saying no to the truth."

"Jeez, it must suck being a human," said Quill.

"Sometimes it does," said Xander.

Later at Greasy's Diner with Xander, Mabel, and Dipper:

"So you finally have a date set for the wedding?" Mabel asked.

"Yeah we decided sometime in September," said Dipper, "Though we haven't sent the emails out to the guest."

"I'm already going, just remember, have a pizza buffet," said Xander.

"Why?" Dipper asked.

"Because every wedding needs a Pizza Buffet, heck I'm doing one for Mabel and my wedding redo," said Xander.

"Wait what was that last one?" Mabel asked.

"My mom got mad that we married without her their, besides its not a real wedding," said Xander, "Its almost like one of those play weddings little kids have. Like what Bryanna had with her Fozzie Bear toy."

"Oh okay, just when?" Mabel asked.

"2 days before graduation," said Xander.

"Good because I don't have plans that day," said Mabel.

Just then Pacifica comes into the restaurant and over to the table.

"Pacifica why haven't I seen you in days?" Dipper asked.

"First off, I'm not breaking off the engagement when I say this," said Pacifica, "There's something I need to tell you."

"Wait I found a date in September we can have the wedding on," said Dipper.

"Actually we may need to push the date up a bit," said Pacifica.

"Why?" Dipper asked.

"I don't think I'll fit in the dress then," said Pacifica.

"Why would you worry about....wait, you're joking right? Please tell me you're joking!" said Dipper.

Pacifica was silent for a second.

"Surprise!" said Pacifica very awkwardly.

Dipper faints.

"Called it," said Xander.

"Welcome to our world BroBro!" said Mabel.

Yep Dip done goofed, he got made a bun that's now in Pacifica's oven....that sounded a lot less dirty in my head. Anyway, answer the cipher below and I'll give you a shout out next chapter.

14-5-24-20 20-9-13-5, 15-14 16-18-9-19-15-14-2-18-5-1-11