Noun
(idiomatic) Statements which are boastful or exaggerated.
(idiomatic) Major topic of conversation; current gossip.
Source: en.wiktionary.orgStaveley may have a bruised ego after big talk has amounted to little but it is the club that is damaged by the draining uncertainty that has infected a season that was supposed to be a celebratory return to the top flight. Source: Internet
“It was, like, how many more days until the assembly, how many more days until I get my hair cut, how many more days has been a big talk in our family.” Source: Internet