(whattheactualfuckareyoudoing) used when asking someone what they are doing.
usually used when upset or pissed off, or when u just want to know but also want to be a dick about it.

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)