talk a blue streak

talk a blue streak

To speak with great rapidity, volume, and/or intensity. He's a lovely guy, but he'll talk a blue streak if you let him. It can be exhausting! It can be hard to follow along with her when she starts talking a blue streak like that.
See also: blue, streak, talk
Farlex Dictionary of Idioms.

talk a blue streak

Fig. to talk very much and very rapidly. Billy didn't talk until he was two, and then he started talking a blue streak. I can't understand anything Bob says. He talks a blue streak, and I can't follow his thinking.
See also: blue, streak, talk
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

talk a blue streak

AMERICAN, INFORMAL
If someone talks a blue streak, they talk a lot and very fast. My Mom always says I talked a blue streak from the time I opened my mouth. Note: You can also say that someone swears or curses a blue streak, meaning that they swear a lot. He was led out by the police, cursing a blue streak as he went. Note: This expression refers to a blue streak of lightning flashing quickly across the sky.
See also: blue, streak, talk
Collins COBUILD Idioms Dictionary, 3rd ed.

talk a blue streak

speak continuously and at great length. North American informal
A blue streak refers to something like a flash of lightning in its speed and vividness.
See also: blue, streak, talk
Farlex Partner Idioms Dictionary

talk a blue streak

tv. to talk fast or a lot. Some parrots never talk. Others talk a blue streak whenever it’s light.
See also: blue, streak, talk
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • swear a blue streak
  • curse a blue streak
  • cuss
  • cuss a blue streak
  • cussed
  • turn the air blue
  • run (one) off (one's) feet
  • rush (one) off (one's) feet
  • rushed off your feet
  • be rushed off (one's) feet