In time, term that once referred to refined manner and ample means, came to assimilate the sense—even the popular glorification—of worker, while nonetheless held in distinction from the laboring classes.
To be middle class was paradoxically to have earned and to further retain—through hard work—one's social position above the "working class".
Such autohagiographic identification, having donned the mantle of proletariat as raiment of common preeminence, we refer to as perquisitive classposture.