Ouch! Judging from the width of the cut it could've probably been worse?
Once at a job I was guiding a M52 or so bolt, about the size of a baseball bat, while the part that was supposed to be fastened was hanging off a crane. The bolt got pinched, I thought I'd have time to fix my grip, turns out I was wrong and the bolt fell on my right index finger... So I went to the toilet to have a look at it, after taking the glove off I could see bone, among other things. Went to tell the boss that I think I should go see a doctor, wrapped half a roll of electrical tape on it and drove myself to ER... It turned out alright, the shape is a bit weird and there's not much feel in that fingertip, but was left with no loss of functionality. Actually now that I think about it, it's kind of nice to have one finger that's a bit number than the rest.