My grandmother always said…
- Don’t go where you’re not invited.
- Don’t talk about what you don’t know
- Don’t interfere with things that are none of your business
- Do not open the fridge in someone else’s house
- Don’t call after 10 pm
- Don’t go see someone at lunchtime
- Don’t enter other people’s bedrooms without permission
They were the rules of good manners and they still are, because manners never go out of fashion!