gasconade

(noun) an instance of boastful talk. Synonyms: brag, bragging, crow, crowing, vaporing, line-shooting. Examples: "His brag is worse than his fight." "Whenever he won we were exposed to his gasconade."

(verb) show off. Synonyms: boast, tout, swash, shoot a line, brag, gas, blow, bluster, vaunt.