I got a paper cut in the skin between thumb and index finger! An office job is hazardous.
Was cleaning a suspension wishbone with a wire brush on the angle grinder. All done, took it out of the vice and just had the bit that was in the vice to clean. Impatiently I held it to clean the last bit rather than put it back in the vice.
The brush caught an edge and flipped it out of my hand. I jumped back and let go of the grinder too. It fell against the inside of my knee. It was summer and I was wearing shorts. There was a nice section of grazing where it made contact. Phew, that was close thought I.
Then loads of little red pinpricks appeared and turned into a stream of blood down my leg.