I don't know if Bush pounded his chest and what not in a real or feigned exuberance in which he exclaimed the majesty of his office. Were it true, however, I would not be at all surprised. The human psyche, for illustrative purposes here, can be conceived as an elastic organ, shaping one way or another as the spirit (normal or lunatically contorted) moves it. I will note for background, regardless of the wattage of the bulb that illuminates his upper reaches, that GW Bush has a wealth of unconscious drives (or worse: semi-conscious but ignored) that bedevil both his decision-making and very conception of the world, in ways inharmonious with chest-pounding.