I have a diagonal scar above my upper lip. It appeared when I was about three, even though I did never hurt my face or anything when I was that young. Some months later (or maybe a couple of years), it appeared two small birthmarks around it, which made it a percent sign. Weird.

Another scar is on my chin. I was about ten, and me and my class were supposed to play rounders, on a gravelyard. I was wearing 4" platforms.