"Tom's boobs," he stated over breakfast, pointing at her chest (Freud would have a field day).
"No," Julie corrected him. "Mummy's boobs. Girls have boobs, Tom."
"Girls have boobs," he repeated seriously.
"So if girls have boobs," my friend asked, "what do boys have?"
"Bikes," Tom answered.
A pretty succinct appraisal of the gender divide, I'd say.