Like:
10-month-old boy in clinic who is all smiles the entire time that I first saw him. When I went out to present to the attending and came back into the room later, he has a new look of intense concentration on his face, with furrowed brows and pressed lips.
Me: "Why does he look so concentrated?"
Mom: "He's pooping."
Later:
Mom to boy: "Are you done?"
[Boy still looks very focused]
Mom: "Nope."
