A compound word made from the words "balls", "back", and "action". Ballbaction is when one male playfully accepts a piggyback or shoulder ride from someone, and instead of mounting them smoothly and majestically, slams their testicles into the back of the person giving the ride.

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)