When my mother was talking to someone about something she didn't want the kids to hear she would say let's go outside "little pictures have big ears" In case someone doesn't understand this, when I was growing up, 'Children were to be seen, not heard'. But as a child, if you were asked something and didn't answer right away, you would be asked 'If the cat got your tongue?' Others would be sayings like 'Waste Not, Want Not', 'Live and let live.' 'Eat you food, there are starving children in China.'