It wasn't major, but it still got me feeling queasy. I don't remember exactly how I did it but I smacked my wrist on something sharp and it busted open a big gash. When I moved my thumb, I could see the tissue around my tendons tighten up and wiggle. It probably should have gotten a couple stitches but I just threw a bandaid on it. Might be why there is a big scar there now.