Too many! That's what happens when you get as old as me.
1. Sitting under my Jeep welding, because too lazy to crawl in and out. In shorts, sitting Indian style. All is well. I am up all night, get it together, head to Crackers Neck. Sitting by the fire the following evening, my legs start to burn. I am on fire. My wife repeatedly soaks a wash cloth in cold water and holds to my legs, you can see the steam roll off it heated up so fast. That one took about a month to heal. Of course I hit it every chance. still have a nice scar from it.
2.Again, under my Jeep, I am grinding off a weld a buddy had layed down for me when trying to get it ready to wheel. I have the 4" grinder locked on. Wife comes out, she is headed to the store to get milk. As I am grinding, I am pretty deep into the weld, I must have got it cocked sideways, and it jerked it out of my hands. I am scrambling to get out of there, and it catches me. It gets my wrist, my side and my back. what saved me was one, I had on an old thin tshirt and it wound up in it and just sit there humming, but locked up, and my wife having mind enough to unplug it. I just lay there, face still covered till she un wound me.
3. Changing out a drive shaft, a 48"er to be exact, and drop it on my head. CV end of course.
4. Grinding outside, and right beside Leslie's Honda and on another date, my Olds. Both have little bits of metal embedded in the passenger side glass.
5. Once saw a guy changing an axle in the woods, on a hill. His friend took the tire from him and layed it down, kinda,.... it rolled down the hill for what seemed like a mile before it stopped. it hit so many trees it took a while to find it.