One is happenstance, twice is coincidence, three times is Enemy Action.
I would like to agree, but question your sincerity because of your sign-on date.
I dunno. One was a 36 y/o guy bringing a gun in to SELL. Noobs buy, they don't sell, but then neither do I. One was a dealer, the third was a 54 y/o reloading his .45 after leaving the show. Done that myself a couple of times, but I didn't shoot myself doing it. (if I did it would really suck, since I use hydro shocks in my carry weapon).
I've never shot myself, although a cousin did manage to shoot himself in the toe with our Grandpa's .22 rifle, which was defective, but the injury still could have been avoided by observing rule one, rather than resting the muzzle on his shoe. :)