I have a friend who used to teach firearms safety to the L.A. Sheriff's Dept.
One night he couldn't sleep and got up and "started fooling around" with his guns. He drilled a hole in the floor, one inch from his foot.
He tried to keep it quiet, but I found out about it. Next time I saw him, I clapped him on the shoulder and said, "So, Len, I hear you are going to be teaching another firearms safety lesson soon."
He was not amused.
--Boris
This person, might have not been too familar with shotguns.
That and mixing with alcohol proved deadly.