The Bald Soprano
Mr. Martin: "Excuse me, madam, but it seems to me, unless I'm mistaken, that I've met you somewhere before."
Mrs. Martin: "I, too, sir. It seems to me that I've met you somewhere before." (87-88)
Mr. Martin: "Elizabeth, I have found you again!"
Mrs. Martin: "Donald, it's you, darling!" (137-138)
Mary: "Elizabeth is not Elizabeth, Donald is not Donald." (139)