all talk and no cider

all talk (and no action)

Said of one who talks a lot about something that one has not actually done, or will not actually do. She may brag about donating money to the school, but I know she's all talk and no action. Oh, he's all talk—he's never had to face real danger.
See also: all, talk

all talk and no cider

All talk and no action. Full of strong words, promises, or intentions, but failing either to act on those words or to achieve results. He keeps threatening to quit if he doesn't get a raise, but I think he's all talk and no cider, considering how long he's been here.
See also: all, and, cider, talk