Oh! Didn't realize what you were talking about, Ghosthunter. But the example helped.
I tune up my senses and start seeing fractals in everything - music flooding around me in a halo of flashing color, the cacophony of taste, the ever shifting fractals of people moving in and out of connection with each other. I'm a color-letter and color-music synesthete and trained as a painter so a lot of what I do are the same things I'd do to plan a painting. It's a shift in visual perception to see beauty in fallen leaves, the patterns of shadow, trash at the side of a road. It brings a rush of energy but also vulnerability so that it gets harder to keep still and act normal.
If anyone tries to talk to me I snap out pretty quick so that I can answer, but I'm sure I look pretty out of it.