I still remember when I was young when my dad tried to grab a can of soup that fell off the cabinet mounted powered can opener. Sliced his palm open, I think he got 12 stitches. Thing is, he decided to wait for my mom to come home, so he wouldn't have to take me and my younger brother to the hospital with him. I think he learned his lesson, and also bought a manual can opener after that.
As far as dropping knives and guns, I understand that accidents happen, but really? You're holding something that has the potential to kill or seriously injure, and you drop it? Sounds like some people don't give knives or firearms the attention and respect they deserve. *knock wood* never dropped anything like that myself. Sorry, don't mean to bust anyone's stones.
I have dropped a pipe before, but it was a basket pipe. Got a nice dent in it, but it still smokes fine. glad it wasn't one of my nicer briars