I'm hoping some of you will share your humility along with me on this, but if not, hey, it'll be another one of the dumbest things I've ever done.
Anyway, I think my classis happened about a year ago when lifting at the YMCA. I'd just finished my 3rd set of a French press while laying on a bench press station. I went to put the bar on the pegs that are used to hold the barbell, and missed one of them without paying attention. A 65 pound EZ Curl bar came down on my left shin, skinned the living crap out of it, complete with oozing blood, then hit the floor with a God awful clang. Oh yes, I got a few looks, but no sympathy for some reason.