Zit

This evening, Cole was sitting on the porcelain throne just before bed and I was sitting opposite him on the floor. He was examining my face closely.
Then he said, "What's that?" pointing to a spot above my upper lip.

"A pimple."

"What's a pimple?"

"It's a spot that turns red and then after a while it gets better."

He reached a tentative finger out and ran it gently over the surface of my pimple. Then he smiled and observed, "It's like a little volcano!"