Dear Mr. Vernon, we accept the fact that we had to sacrifice a whole Saturday in detention for whatever it was we did wrong. But we think you’re crazy for making us write an essay telling you who we think we are. You see us as you want to see us… In the simplest terms, in the most convenient definitions. But what we found out is that each one of us is a whore, and a scoundrel, and a rascal, a ne'er-do-well, and a villain… Does that answer your question? Sincerely yours, the Guild of Calamitous Intent.
Given the origin of the phrase was extremely classist in Britain. Probably peasants and surfs would be the opposite. Any form of commoner would not be a lady or a gentleman. So reminding people of that.
Though I'm sure the British would do it and I thoroughly British way, introducing Mr Bob and his wife Julia, and now introducing the gentleman lord von butterscotch and his lady affelia.
In the context you would know they were commoners cuz they didn't get the title lady or gentleman