While demonstratively chewing gum or playing music loudly at the back of the bus are almost universally frowned upon, other areas of our modern lives lack the clear-cut rules of the Downton Abbey era.
Etiquette experts Debrett's have apparently been inundated with anxious requests from members of the public asking them to clear up the Ps and Qs of the smartphone age.
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Click Me It does make me wonder some days if people are forgetting or not using basic good manners.