Have you ever found yourself in situations where you have to clean up after a colleague?  The usual scenario is that work that needed to be done didn't get done, and you get to be the one who answers for it.

That happens to me now and then.  When it does, the short deadline, compromised sleeping and relaxation hours, and over-all irritation set my heart aflutter with stress-induced palpitations.  I take over not out of a feeling of superiority but out of necessity, and to need to clean up after someone, to need to make good on a commitment someone else made, is never good.  I would much rather that the person in question delivered the goods.