bang on about (something)

bang on about (something)

To speak continuously or at great length about something in a foolish, tedious, or irritating manner. Primarily heard in UK. Tom is always banging on about his plans of becoming some great author, but he never writes a blooming thing! What on earth are you banging on about? You really have no idea how politics works, do you?
See also: bang, on
Farlex Dictionary of Idioms.
See also:
  • bang away about (something)
  • balls on about (something)
  • gripe to (someone or something)
  • gripe to (someone or something) about (someone or something)
  • be too clever by half
  • gripe
  • gripe about (someone or something)
  • keep harping on