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.
It was often said by a photographer when he would like small children to look at the camera and smile before he took a photo.
When the photographer said “watch the birdie”, all of us looked at the camera and smiled.