loud mouth
loud mouth or big mouth {n.}, {slang}
A noisy, boastful, or foolish talker.
Fritz is a loud mouth who cannot be trusted with secrets.
When he has had a few drinks, Joe will make empty boasts like any other big mouth.
Categories:
Source: A Dictionary of American Idioms
An client error occurred: Error calling GET https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&q=%22loud+mouth%22&maxResults=4&videoEmbeddable=true&videoSyndicated=true&safeSearch=strict&type=video&key=AIzaSyCfLRuAZZNAQm6a5uDzgY-Tt668bxsppCs: (403) The request cannot be completed because you have exceeded your <a href="/youtube/v3/getting-started#quota">quota</a>.