Once when I was sick at like midnight I started hallucinating and walking in circles around my room for some amount of time (no idea how long) while creating this plot in my head that I was destroying the world economy just by walking. Like I was just walking in circles and I remember hallucinating this enlarged wad of dollar bills in the center of my room morphing, convulsing and floating as I walked around it. I was imagining that with every rotation I was just making a significant percentage of the paper currency in the world disappear. I was like half seeing plummeting stock charts floating around me and it really stressed me out that I was, as far as my completely unworking mind was concerned, destroying the world. I didn't stop walking though, don't really know what the deal with that was. Then I guess I fell asleep. Found it weird when I woke up. Anyway this poll reminded me of that
*From r/geometricnightmares: Geometric nightmares are "a specific type of dream, often occurring during illness, that involves shapes or objects, themes of infinity, pressure, an overwhelming sense of unease or terror and anxiety, a void and incomprehensibly large or small objects, and/or a crushing silence."
They're kinda hard to explain; check out the subreddit for some examples.