When I was younger I went shooting a few times with my friend and his dad who was a hunter. I remember being handed the scoped Marlin 336, and most of my firearm experience involved video games and movies. I know. Anyway, know how the PSG-1 seems like the coolest gun ever to video gamers? And how the Druganov has that rubber eye cup thingy? Well I didn't see one of those on the Marlin, but figured no problem and just stuck my eye right up to the rim. Hell of a time finding a sight picture too! Why is it all black and moving all the time eh? Found it, and shot, and saw stars. Thankfully only a minor cut and major aches, I learned my lesson!
Then of course was the fact that my friend's dad never even thought about ear protection...
No M1 thumb here, just a few close calls while explaining to people to keep their thumbs clear
When I took my K-31 out for the first time, my hand slipped or something while operating the bolt and one of the corners on the bolt put a gash on my hand. Sopped up the blood with my t-shirt and finished shooting.
When I got my Russian Capture Mauser, which has no front sight hood, I put the bayonet from my VZ-24 on it. Then had a hard time getting it off, wrapped my hand around the thing for a better grip, and pulled the web of my hand right over the VERY SHARP front sight post:
That was a day after, it was very bloody!