Mr. Bates and Anna in “Unfinished Business”

Mr. Bates

I thought I was helping him get out of our lives for good. Now he ranks higher than I do. I've been a damn fool.

Anna

By the way, what was that phrase he gave you to say to Miss O'Brien? You can tell me now, surely.

Mr. Bates

If you keep it under your hat. It was, "Her Ladyship's soap."

Anna

What?

Mr. Bates

I can't make any sense of it either, but that's what he said. "Her Ladyship's soap." And it worked.