Quote from Stuart in the episode Spoiler: We're as Confused as You Are
Stuart: We need the other machine. We have to go back. Denise: Again, guns. [device turns on] Stuart: Okay, so we don't go back exactly. We scooch it a little. Bert: There's a scooch button? Stuart: Maybe. Uh, this thing turns. [device beeps] [ominous whirring] Oh, oh... Oh.
