Noun.
When a hot shell casing from a firearm burns your skin and leaves a visible mark. Also known as a Valkyrie Kiss, kiss of a Valkyrie, or a Gun Hickey.

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)