Cat in the meal-tub American old-fashioned noun phrase
A sudden attack; a hidden danger
The crocodile has been waiting like a cat in the meal-tub for anyone bathing in the river.
Be careful! there may be cats in the meal-tub in this jungle.
The local government reminded residents of a cat in the meal-tub, if they keep living in this dilapidated building.
Used to refer to someone who does something dangerous or risky without realizing it
There is a difficult, dangerous, or violent situation that is starting to develop.
When someone lays wait for, he/she is hiding to prepare for a surprise attack, ambush.
If you say you dry gulch one, you mean that you hide and wait for him and then make a sudden attack.
Not to be in danger or trouble anymore.
The origin of this phrase is not clear.
To keep optimistic or have hope that something positive will occur and simultaneously prepare for a negative outcome
All I can do is hoping for the best and preparing for the worst.