I was about 7 and reaching under my bed. I did not know that my mother had "stored" a barely broken full length mirror there (who does that?). It slashed a flap from my right middle finger at the back near the upper knuckle (visualize this). It is shaped like a C and still visible many years later. When asked in a group about scars, for years I innocently showed mine by turning the back of my hand to them and raising the finger. I figured out that was a BAD idea when I was about 15.
True story, I still have the scar but I no longer show it that way.
And Sigaba, you cracked me up!