A handshake of the utmost disrespect in which one wipes their bare hand on their asshole picking up any stray pieces of feces and proceeds to shake the hand of the unsuspecting victim.

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)