Overheard on the bus, from a couple of seats behind me.
Mother, remonstrating misbehaving child: "Naughty boy."
Her son begged to differ: "Good boy."
She disagreed: "Naughty boy!"
"Good boy!" rising in volume.
"GOOD BOY! GOOD BOY!" And it went on for the rest of the bus ride.
Thank god Rupert doesn't talk back like human children.