be as mad as a March hare

be as mad as a March hare

To be crazy. The phrase alludes to hares' erratic behavior during their breeding season. Mom was as mad as a March hare after I dented her brand-new car.
See also: hare, mad, march
Farlex Dictionary of Idioms.
See also:
  • bats in one's belfry, to have
  • What was (one) smoking?
  • be pushing up (the) daisies
  • be pushing up daisies
  • be pushing up the daisies
  • don't jump the gun
  • answer the bell
  • be straining at the leash
  • Abraham
  • Abraham's bosom
References in periodicals archive
"Everyone is entitled to be as mad as a March Hare, and I am delighted I went through my phases at 14-16 before I started my life.
TODAY'S " QUOTES" "I absolutely [...]