Bravado means a pretentious or exaggerated display of courage or defiance.
Bravado is a noun.
Synonyms: cockiness, crowing, boastfulness, swaggering, bragging, bombast.
Antonyms: humility, meekness, modesty, restraint.
Your embarrassing display of male bravado is not so effective.
With unbelievable bravado, my friend stood up to the boss and dared him to fire her.