Idiom
shoot one's mouth off
Theme: BOASTING
to boast or talk too much; to tell someone's secrets. (Slang.)Don't pay any attention to Bob. He's always shooting his mouth off.Oh, Sally! Stop shooting off your mouth! You don't know what you're talking about.
Slang
shoot one's mouth off
Theme: REVEAL
tr. to brag; to tell secrets.Stop shooting your mouth off. Nobody believes you anymore.So you had to go and shoot off your mouth about the bankruptcy proceedings!