A telling exchange

Jacob: "your eyes are blue?"

Daddy: "yes. your eyes are blue too."

J: "Boys eyes are blue?"

D: "No, anyone can have blue eyes. Sophia has blue eyes."

J: "Oh."

D: "Momma's eyes are hazel."

J: "Why?"

D: "That's how she was born."

J: "Momma was born?"

D: "Yes. Daddy was born too."

J: "Really?"

D: "Yes."

J: "Oh."