It would seem that they are so possessed by an overwhelming and unrelenting sense of decorum, rigid to the point of absurdity, that their entire demeanor is marked by an almost painful inflexibility. This predisposition to adhere slavishly to propriety and social conventions renders them incapable of engaging in even the slightest indulgence of levity or natural human spontaneity, as though they were bound by some invisible rod of moral and behavioral rectitude that permits no deviation from its austere path