A social-climbing, rich, snobish, "dignified," adult's way of politely insulting someone or something.
Ron: FRED! GEORGE! GET RID OF THE FUCKING SPIDERS!
George: We would, but--
Fred: --we don't want to.
Ginny: SHUT UP!!
Lucius: Weasley, youre children are absolutely... charming.
George: Take that back!