Sounds ridiculous now, but my mother would never let myself or my sisters get away with nada!
These are some of the things she would say..
Get your elbows off the table!!!
Where's your manners, say thank you!
Don't eat and talk with your mouth
open!
Speak nicely!
I hope you've washed your hands!
and incredibly, when we had guests visiting we were all sent upstairs, out of sight!