Domo Arigato

Email from a friend:

An elderly and perhaps indigent woman sat next to me on the bus the other day.

She was repeating the following phrase to herself, over and over in a calm tone: "Mmmm, Mmmm Good. Mmmm, Mmmm Good."

She did this for a little while before stopping and saying, "That's the sound a robot makes when it turns itself off."