Aunt Dahlia: Everard's a real artist. His stuff's good; some of it's even in the Tate. Look at that... (pointing to a painting) that's one of Everard's.

Bertie: Oh, I like the patina!

Aunt Dahlia: You don't even know what a patina is!

Bertie: Well, no; but it's generally safe to say something like that when confronted with a bit of art.