Animation Bump: The parts where Dipper says "Now I have a new voice" and "sound awesome" after having his voice modified are more fluid than the rest of his movements.
Arbitrary Skepticism: Grunkle Stan still states that everyone's stories are far-fetched, even though he is falling through a bottomless pit even as he speaks, and even lived through one of the stories.
Arson, Murder, and Jaywalking: Aside from the whole list of crimes Grunkle Stan confessed to, the police were about to arrest him for calling Sheriff Blubs fat.
Bottomless Pits: The entire theme of the episode was the main characters falling through a bottomless pit.
Brutal Honesty: Grunkle Stan while under the influence of the Truth-telling Teeth, to the point he was ready to let himself get jailed for lying to the police about the driving bear, among other things.