A name that replaces a person's actual name if, in fact, they are a Dousche Bag. It is more convenient than having to say their name every time as well as their description. Works for just about any boss or authority figure
A braggadouche is a person who, through gratuitous and excessive bragging, becomes a douche-bag. "Braggadocio" came from the word "braggadocio" plus "douche-bag". Hence braggadouche.
Mark: Hey look its Gabriel again, all he ever talks about is his lawyer job, downtown condo and new mercedes.