Any person who is given to large bouts of hyperbole and/or exaggeration. Claims regarding facets of his or her life will sometimes seem plausible until combined with the multitude of other experiences and/or possessions he or she claims to have had.
Jill: "Apparently he claims to be a good friend of Matt Shadows of Avenged Sevenfold."
Jack: "Even though he's 13 years Shadows' senior and has absolutely nothing in common with him?"
Jill: "Yup."
Jack: "What a total bragavond."
A girl that disappears from the face of the planet as soon as she gets a boyfriend only to reappear once that relationship ends or they are separated for an extended period of time.
Suzie is such a Brigawhore. She broke up with Harry and she was all like, "Let's have a girls' night out!" . Two weeks later she meets Charlie and disappears again.
One who's repetitious bragging resembles a prehistoric beast's warcry. These folks aren't ones you would wish to spend long amounts of time with. You will spend the majority of your time with them figuring out who to get them to leave.
RRRRRAWR I got this new truck, a raise, and I slept with 6 women last night. Advanced bragasaurus's can also be referred as bragasaurus rex's.