A Little Hole

I saw something on the wall of Izak's bedroom, near the head of his bed. A dark spot. Not a spider. Not dirt. I started to scratch it off when I realized it was really stuck on there. So I picked a little more, applied a little more pressure, and then, oops! Took off the first layer of drywall. So now there's a little hole that will someday be painted over... the dark spot? A dried booger.