mad as a March hare—crazy; insane:
- Anyone who thinks the moon is made of green cheese is mad as a March hare.
mad as a wet hen—(also: mad as a hornet) very angry; extremely irritated:
- Mrs. Harris was mad as a wet hen when the rabbits ate all her tulips.
Note: Neither expression fully correlates in meaning with the phrase mad as a cut snake—(Austral.)
1. = mad as a wet hen:
- I was as mad as a cut snake to hear that the telescope was going to be left to die, and it’s good to see that the administrators at NASA have changed their minds.
2. = mad as a March hare:
- Many people I’m sure thought Geoff was as mad as a cut snake, and it’s true, he did occasionally appear to have a tenuous grip on reality.