go on and on about someone/something

go on (and on) about (something)

To continue or speak for a tedious or exasperating length of time. My date kept going on and on about his charity work, never even asking what I do for a living.
See also: go, on
Farlex Dictionary of Idioms.

go on (and on) about someone/something

in. to rave about someone or something endlessly. Why do you have to go on about your sister so?
See also: and, go, on, someone, something
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • go on (and on) about (something)
  • go on about someone/something
  • keep (going) on about (someone or something)
  • keep on about
  • go on and on
  • bang on about (something)
  • bang away about (something)
  • run (one) off (one's) feet
  • rush (one) off (one's) feet
  • rushed off your feet