what would be wrong with with not doing what you were asked not to do by whoever is paying you?

if I'm forced to agree with you that some bending of the rules will be allowed, why don't we bend them in the other direction, toward wasting your time or defacing your stuff? "sorry, we're going to have to cancel your vacation because I think it's funny to do that. use the time to repaint your car that I spray-painted my intials on. hahahaha can't you take a joke?"