Some people are just mean, through to the core. Having one of these people as your boss is always going to be a bad time as they're going to use you as a verbal punching bag, taking their rage out on you repeatedly, time and time again, in order to fuel their unstable, diminishing ego. These bosses will make a point of making a point by going off at someone publicly—and often—as if doing so makes them somehow more important than the person they're screaming at, rather than making everyone aroun…