Talk nineteen to the dozen British informal
The verb "chatter" can be substituted for the verb "talk".
If someone "talks nineteen to the dozen", he/she talks with great speed or energy.
She was talking nineteen to the dozen when we accidently met in a coffee shop.
Susan talks nineteen to the dozen and it can be annoying, but I really like her.
I can't understand what you've just said. You talk nineteen to the dozen.
The verb "talk" should be conjugated according to its tense.
It goes back to the time of the Cornish tin and copper mines. These mines were often hit by floods. In the 18th-century coal-powered, steam-driven pumps were installed to clear the water. When working maximally the pumps could clear nineteen thousand gallons of water for every twelve bushels of coal.
To punish someone or something harshly
He's a really strict teacher, so he'll definitely lower the boom on you if you don't do your homework.