on about

on about

Talking excessively about something in a way that bores or bothers the listener. Primarily heard in UK. I had to leave the room because the professor was on about the laziness of our generation yet again. Are you still on about me forgetting your birthday? That was months ago!
See also: on
Farlex Dictionary of Idioms.
See also:
  • labor the point
  • labour the point
  • (all) dressed up like a pox doctor's clerk
  • basher
  • Bible
  • Bible-basher
  • Bible-thumper
  • thumper
  • belt and braces