"You don't know true pain until..." You drive a staple through your finger nail while putting up wire, like I did the other day.
2 weeks give or take back, just a day after getting back from our epic cross- Canada odyssey (with zero injuries btw) I was bucking up some logs and just ever so barely nicked my left pant leg. When I went to the clinic 2 days later the xray revealed that I had sawed 1/2 inch into my shin bone and I needed 15 stitches... I guess I'm a bit of a klutz.
I also sawed through my own neck once, but my head grew back. My wife has been rather sullen ever since.