What does "Mad as a cut snake" mean?
It usually means very angry. In some yarns it can also mean eccentric or a bit unhinged, depending on the story.
The saying in a sentence
The saying
Mad as a cut snake
Example
He was mad as a cut snake when he saw the bill.
When you use it
Use it when telling a mate someone blew up, often with a laugh after the fact.
When you do not
Avoid it in a serious complaint or a workplace report. Say angry or upset instead.