Okay, if we're opening up the field, I have an interesting submission. Aside from watching my FIL cut his finger off on my table saw, there's a story of my father putting a drill clean thru his hand. I assume it must have been a wood auger type, as I can't imagine anything else self-feeding fast enough to go completely thru the hand without stopping. In any case, he undid the chuck (old key type) with his free hand, and went to the hospital with the bit still in his hand, knowing blood loss (and probably pain) might spike dramatically when it's withdrawn.
This happened before I was born, I've only heard the story.
We had a thread, "stupid things I have done", which has gone dormant. I guess we should take this tangent over there.