You don't even have to do anything wrong to get hurt.
Since your sharing Brad, I guess I will.
Last weekend I was toping a few small trees for my Father in law. When I took one top it went exactly where I wanted it to, but when it fell it didn't "fly" out like I'm normally used to, as soon as the hinge broke the top dropped straight down, and the way I was holding the saw the bottom of the top hit the saw and drove it into my knee, good thing the chain was stopped, the saw was still running, I got lucky, it cut my knee pretty good, had a nice flap of meat taken, kinda hurt so I came down pulled up my pants and saw a nice stream of blood running down my leg, but it didn't look too bad so I just carried on. Could of been worse for sure.