The pug trafficking joke from "The Stanchurian Candidate" makes a reappearance in a joke at the beginning of the episode.
The tune played in the flute by the faun, when the unicorn is knocked unconscious, is the International Morse's Code Distress Signal or S.O.S., using three short, three long and three short clicks (. . . - - - . . .).
The board games in Stan's closet are parodies : "Connect Forty-Four" for "Connect four" ; "Necronomiconopoly" for "Monopoly" ; "Shhh, Don't Wake Stalin" for "Don't Wake Daddy" ; "Imperfection" for "Perfection" ; "Satiated Hipos" for "Hungry Hungry Hippos". Also "What Could Go Wrong" parodies the children's book and movie "Jumanji".
Dipper's thoughts displayed on the screen are, in order:
"Oh man, I can't believe I'm with the author!"
"Gosh, I hope no one was looking!"
"Maybe if I cross my legs, no one will notice!"
"I'm kinda hungry, but I could also not eat."
"I should really try out the president's key sometime."
"I could probably rob a bank."
"I miss Tyrone!"
"That red bathing suit, man!" (Wendy's bathing suit from The Deep End (2012))
"Is my fly down?"
"Disco girl! Coming through!" (from Dipper vs. Manliness (2012))
"Wendy! Wendy! Wendy! Wendy! Wendy! Wendy! Wendy!"
One of the thoughts visible on the screen when Dipper is hooked up to Ford's machine is "Maybe if I cross my legs no one will notice."