My burn scar.
It’s small now, but it used to be big. I got burnt with hot charcoal during a BBQ, when I was 4. One charcoal fell inside my jacket and burnt my chest, and another one felt on my hand. I had 3rd grade burns. My dad would brush the dead skin off my hand and chest while singing to me, so I wouldn’t freak out. The scar on my hand is barely visible now. But then again, this was 20 years ago.