Definition of drop a brick in English:

drop a brick

phrase

British
informal
  • Make an indiscreet or embarrassing remark.

    ‘he dropped a brick when he admitted that he knew where we were going’
    • ‘He seems to have rather dropped a brick when he told the Assembly "‘South Australia does not own the Northern Territory, only manages it’.’
    • ‘Every time she spoke, she dropped a brick.’
    • ‘Whether you visit Japan as a tourist or a businessman - there'll be many occasions for you to drop a brick!’
    • ‘As always, the career starts at the very bottom and brings a lot of disappointments and she often drops a brick.’
    • ‘Three former TV soap stars stepped back into the limelight this week - and dropped a brick.’