As a baker, I mostly have burn scars; I don't use a knife often enough or fast enough to get many cuts.
When I was young, I spent a couple of years baking at a place with tiny old convection ovens. The racks were too close together, but we needed to use all of them, so I couldn't take any out. Anyway, I ended up with burn scars that line up perfectly to form a straight line across the fingers of my right hand.
I guess that ruins my career as a hand model, huh?