I watched a video tonight produced by a nationally known "street smarts" guy. In it he mentions that when a potential threat approaches, challenging him with "Gimme Five Feet" will (might?) stop him as cons know what that means.
Other than that, it was pretty standard stuff IMHO. Instead of "Condition White" or "Yellow" he used "Code One" or "Two." Why, I don't know. Everyone uses Cooper's system that I'm aware of. It's not like it's copyrighted or something.
Anyway, "Gimme Five Feet!" Good? Bad? Indifferent?