What is Mad As A March Hare.?
1.
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:
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.