Alright /k/, it's time to reveal our darkest secrets. Nobody ever means to do stupid shit, but as has been demonstrated time and time again, we frequently do anyway. Including with guns.
What's the dummest thing you've ever done with a gun. Worst that I've done was I drove out to a remote public range, nobody else there, and after I got set up I realized I'd left my ears back in the city. I'm at this magical range in the mountains and have no hearing protection. Fuck. So I said screw it, I'll shoot six anyway (I had a .22 revolver at the time, and figured I'd probably be fine). Six shots later I turn around and realize I've lost all balance. I just sat there for a while until I'd recovered enough to clean my shit up and try to drive back down the mountain.
>pic sort of related
Had another issue at this range with another guy setting up to shoot BEHIND THE FUCKING FIRING LINE. There's not really a berm here so much as you're in a pit on the side of a mountain. He was standing right on the lip of that backstop, and just insisted "no, you can keep shooting, you'll just send your rounds into the berm". So I left.