know how many beans make five

/N OW1 AW0 M EH0 N IY0 B IY0 N Z M EY0 K F AY0 V/
verb
  1. 1

    To be knowledgeable about how the world works; to have common sense and judgement.

Source: https://en.wiktionary.org/wiki/know%20how%20many%20beans%20make%20five