mad as a March hare
Crazy, insane. Refers to male hares’ habit of leaping wildly about in March, their breeding season.
Calm down; you’re acting mad as a March hare!
mad as a March hare: define #2
Mad as a March hare.
May stem from the relationship between the March hare and the Mad hatter in Lewis Carols – Alice in Wonderland during the tea party.
See also: Mad As a Hatter
1) Jimbo took three E’s a tab of acid a hefty snort of coke, a massive toke on the bong and for the rest of the evening was seen to be acting as mad as a March hare.
2) My grandadsd is 99 and sometimes acts as mad as a March hare.