I was lifting at my old gym. They had recently sold out to the YMCA. All of a sudden you started seeing a bunch of kids running around. I had almost decided to quit when this happened. I was getting set to do dumbell bench presses. When I pushed the weight up the first rep, I screwed up my form and the dumbell went out. I had two choices. Either drop the weight or tear my shoulder to shreads. I dumped the dumbell and it missed a kids foot by a couple of inches. It shook me up so bad that I barely finished my training session. I visited another gym that evening and signed up immediately.
I've had a similar experience to this... DB Bench press, just completely failed, one of those failures that your just screwed and need to drop the DB's... Which I did, as I had no choice. Must of been mid set that another guy, for whatever reason set up a bench VERY close to me, the DB JUST missed the guys foot. Even more luckily, the DB bounced after the first impact - OVER his foot / ankle. Some bones would of been broken for sure. Some people are idiots, it's not like he had to be so close..
I've had guys moving the foot-end of their bench extremely close to the bar when i've been dead lifting. Close enough that a wacky rep could result in a crushed lower leg. I can't even bring myself to speak to them - what do you say? "excuse me, but what the hell do you think I plan to do with this F****** Bar? Admire the beauty of the dam thing?" I know I should politely ask him to move back, but I find it completely ridiculous. Almost shamefully, my solution is to do a single, but slam the thing down so that they get a fright. Normally followed by a disgusted look, "dam meathead / thug / whatever" then they move the bench. Lucky I even noticed he was so close if you ask me...