The act of rushing to your job to take a crap or staying late to take a crap on company time. This is especially satisfying when you leave your house in the morning, already needing to take a crap and holding it in to go at work...on the clock.
A reference to a zen koan, worn threadbare and meaningless by endless repetition in the media. It has no 'answer' unless, as in definition (1) above, the answerer redefines the term 'clapping', thus entirely missing the point.