go into a song and dance

go into a song and dance (about something)

To have one's usual, often tiresome, reaction to something. Please don't bring up tax reform unless you want Uncle Fred to go into a song and dance about it.
See also: and, dance, go, song
Farlex Dictionary of Idioms.

go into a song and dance (about something)

 and go into the same old song and dance about something
Fig. to start repeating excuses or stories about something. Please don't go into your song and dance about how you always tried to do what was right. John went into his song and dance about how he won the war all by himself. He always goes into the same old song and dance every time he makes a mistake.
See also: and, dance, go, song
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • go into a song and dance (about something)
  • go into the same old song and dance (about something)
  • expatiate
  • expatiate on
  • expatiate on (someone or something)
  • daily grind
  • uncle
  • Uncle!
  • the school of life
  • the university of life