a bag full is a person who is so retarded he/she can't simply be called a twat, they have to be more agressively called a bag full of twats, or sevral twats could also be reffered to as a bag full of twats.

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)