When you drop something on your foot and cause a bleed under your toenail, or jam your foot against something in the dark, it’s interesting to document the months it takes for the line of black to grow out from the root.
Clipping a little off every few days, taking a snapshot with your phone, the line eventually comes to the edge, and you file off the last of it. And you’re back to normal.
And swear to always wear socks and shoes everywhere.
Until you head off for bed, trip over something, and jam your toe against something else.