Been pretty lucky so far.
Minor cuts when I get going too fast and not respecting the knife.
Hence my saying, "Your tools only give you respect as much respect as you give them. And sometimes a little less."
Dumbest thing I ever did was playing tennis one time.
Was playing poorly and angry with myself for it. Missed a ball for the umpteenth time and took a wild swing in the air with my raquet.
It quickly clocked me one dead center of my forehead. Put out my lights.
When I say that I don't mean it knocked me out, but literally blinded me for what felt like an eternity, probably 10 seconds. Dumb then. Dumb now. But funny as a story. Back to the statement about respecting your tools.
A bit off topic, but worth it if it amuses anyone.