I accidentally stumbled upon a way to defuse those friendly but mis-understanding comments people make when they find out you own guns. You know, the half-joking "watch out for him" comments. I had somebody pull one of those on me today and I made a comment about the guns only a tool, and not dangerous if they're handled properly*, and rattled off the four rules right there. Attitude instantly went from wondering "why does this guy have a dangerous hobby" to "hey, he seems to know what he's talking about" without me having to show off any knowledge or talk guns for 20 minutes to get street cred. *execpting an SD situation of course--i just knew somebody would make a smart comment about "if they ain't dangerous why use 'em"