When I was like 10 y/o I was chilling on rollerblades and fell face first on the corner of concrete strairs.. Not as bad as it could've been but the part that connected was right under my lower lip so I had a hole between mouth and lower lip. Only scar left at this point but it's a grim reminder.

Also I'm missing one shoulderblade but it's not exactly an insury, just a bi-product of a surgery lol.