As the summer between elementary school and junior high was winding up, my mom had decided to recover the kitchen chairs two at a time so that there were two still available for sitting on. The Saturday before classes began, a friend was having a birthday party, so I was all decked out in my new Girbaud (http://www.girbaud.com/eng/home.html
) shorts. Not thinking, I sat on one of the in-progress chairs. At first, I just fell through the middle of the chair and didn't think anything had happened. Upon getting up, my mom noticed the large hole in my shorts, which then led to her getting mad and demanding to search them out. As it turns out, she had taped the screws used to hold the seat of the chair to the frame to avoid losing them, pointy side up
and one tore through my skin. I had to go the ER and have four stitches in my ass and sit on a doughnut throughout the first week of classes. Eleven years later, I still catch my self making sure there is a seat in place before sitting on a chair.
I've been lucky since then and have managed to never sew through my fingers or glue myself to anything. I've only cut myself on the edge of glass while framing. It didn't require stitches or leave a scar, but it sure did bleed for quite some time.