I was watching Behind Office Doors (1931), starring Mary Astor and Ricardo Cortez, and there was a catchy bit of dialogue that caught my ear.
Astor's witty but hardworking and competent Mary Linden is discussing a brash young salesman she likes with Delores Kogan, a cynical flapper type who's less enamored with him, played by an actress named Kitty Kelly.
Delores: You're goofy about him.Mary: (wistfully) Maybe.
Delores: Aw, he don't even know you wear silk stockings.
I like that. Where one might expect to hear the pedestrian and familiar "He don't even know you're alive," that much more clever riposte is pleasing on several levels.