Excercise for your bottom. Often done by walking long distances and going all day while clenching your Bumb cheeks.

The effect is, (after extensive butrobic programmes and devotion) a rock hard ass.

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)