How do you get rid of unwanted guests? What do you do if there's a racket in the quiet carriage?
How should you eat peas, and behave in queues? How to behave, like how to punctuate, is an aspect of life that many are no longer taught.
Thankfully, Sandi Toksvig has come to the rescue with her entertaining guide to modern manners, with characteristic wit and perceptiveness.