The act of spectating the game of the player who just killed you (typically in a battle royale game) expressly for the purpose (and pleasure) of watching said player get killed by another player.

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)

Technically it is a verb to describe the action of watching someone do a job that you can't, won't, and aren't doing while criticizing their work.

Informally...When a lazy MoFo stands around throwing shit at people that are actually getting the job done.