The insincerely constant smiling expression on the face of a politician or other
performer, which is meant to
ingratiate oneself with
voters/fans, as opposed to being a true expression of the person's feelings.
Headline of a political commentary article: "
Mitt Romney: the man behind the perma-smile."
"Because she's always wearing that perma-smile, it's hard to know
what's really going on with her.
