That list is kind of humorous. It makes me think the title of that thread was something like "How to spot a criminal carrying a concealed weapon" or "How to spot someone new to CCW".
Some of those make it sound like the person is carrying the BFG9000* or something. It's actually a great list of "what not to do" when CCW. Although a few of those on the list are good reminders of what you should do in certain situations.
I was in a store one time and saw a guy carrying concealed but OWB. How did I know? His barrel was sticking out of the bottom of his jacket. D'oh.
*BFG9000 reference -
BFG9000 - Wikipedia, the free encyclopedia for those of us that don't play video games.
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How're we gonna shoot golf without guns?
"It's 2am, do you know where your firearms are?" - In honor of Dennis Farina
When the Boogeyman goes to bed, he checks his closet for Chuck Norris.
If guns cause crime, all of mine are defective.
You got red on you!