Terribly sorry to butt in but do you know this Betjeman poem? A helpful compendium of middle class solecisms and faux pas, as viewed from slightly above.
No! As a very elegant friend of mine informes me „say Serviette and my mother will shoot you!“ It is apparently almost as bad as calling pudding "Dessert“.
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https://allpoetry.com/How-To-Get-On-In-Society