1. When a man moves from the front door of a lady having her period (red) to said lady's backdoor porch area (brown) and back again (purple).
Based on Chicago's sexy and efficient train system. Similarly named moves are found in Boston and New York.
2. A long-form improv style characterized by moving quickly from one story arc to another and back again. See Chicago improv group "The Belmont Transfer."
"Hey, you comin' to see the Belmont Transfer tonight perform at the Playground?"
"Sorry bro, I'll be movin' from brown to red with Lacy all night long. It's our anniversary."
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