Barramundi (expensive Australian fish) that is fake, which doesn't look or taste like Barramundi when ordered at a restaurant.
Some restaurants have Barramundi on their menu and if you order it, they present you with a cheap, inferior alternative and pass it off as Barramundi.

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)