could talk under water

could talk under water

Is always very talkative. Primarily heard in Australia. Good luck getting a word in if you invite Carrie—that girl could talk under water!
See also: could, talk, water
Farlex Dictionary of Idioms.

can talk under water

mainly AUSTRALIAN
If you say that someone can talk under water, you mean that they talk a lot. My friends tell me that I can talk under water. What they didn't know was that she can also talk under water with a mouth full of marbles.
See also: can, talk, water
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • can talk under water
  • donkey
  • can talk the hind leg(s) off a donkey
  • can talk the legs off an iron pot
  • ask back
  • meet with
  • meet with (someone or something)
  • long absent, soon forgotten
  • empty vessels make (the) most noise
  • empty vessels make most noise