when the cat's away (the mice will play)

when the cat's away (the mice will play)

When the authorities are absent, people will break rules and do as they please. This proverb, which exists in numerous languages, appeared in several different forms in English in the seventeenth century. Thomas Heywood used it in A Woman Kill’d with Kindness (1607): “There’s an old proverb—when the cat’s away, the mouse may play.” Today it is often shortened.
See also: away, mice, will
The Dictionary of Clichés by Christine Ammer
See also:
  • teach a man to fish
  • it takes a village
  • village
  • all cats are gray after dark/at night
  • best-laid plans go astray, the
  • the best-laid plans
  • the best-laid plans go astray
  • the best-laid plans of mice and men
  • for want of a nail
  • For want of a nail the shoe was lost; for want of a shoe the horse ...