all hat and no cattle
Full of talk that is more impressive than that which one actually possesses or is able to do. Primarily heard in US, South Africa. He talks as though he knows more than anyone else, but he's all hat and no cattle.
all hat and no cattle
AMERICAN, INFORMALIf you describe someone as all hat and no cattle, you mean that they seem impressive or exciting but in reality they do not do much. On this issue, western leaders are all hat and no cattle. Note: This expression comes from the West of America, where cowboys (= people who look after cattle) wear large hats.