Ratchet mouth noun phrase
Said of someone who talks without stopping.
"Stop talking! You are such a ratchet mouth," The class monitor screamed at John.
He has been talking during the whole lesson. What a ratchet mouth!
I am becoming exasperated with this ratchet mouth. I've told him to stop, but he is still going on endlessly.
Used to imply that one talks for such a long time that someone becomes tired or bored
Used to express efforts to expain or talk about something again and again but one doesn't listen to or change their opinion
Talk so much that the listener becomes exhausted or bored
To be talkative, usually in a noisy, rude or indiscreet way.
The origin of this phrase is not clear.