When you don't know what to say, so you just squish your neck in to form a double chin, and move your mouth straight across your face, creating the most awkward face you can think of at the time.

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)