Last week we were back in my hometown visiting family. We went out to eat one night, and the conversation got a bit loud. Bella looked at my grandmother and said, "Nanny, shut your mouth."
The table laughed and then went a bit quiet. So I told Bella that maybe we needed to find a nicer way of asking Nanny to speak more quietly.
Bella contemplated this, then looked at Nanny and said, "Nanny, shut your mouth... please"