shoot off at the mouth

get wind in one's jaws

To have too much to say; talk too much; run at the mouth; to speak one…

talk about the weather

To chit-chat; to shoot the breeze.

shoot the bull

To chinwag; to talk idly.

toot one's own horn

To promote oneself; to boast or brag; to tout oneself.

big mouth

The mouth of someone who talks too much, especially by making exaggera…

run off at the mouth

To talk excessively.