The idiom "make a long story short" is used to summarize a lengthy or complicated story, event, or situation into a shorter and more concise version. It implies that the speaker will provide an overview of the main points instead of going into detailed explanations.

The idiom "dead as a doornail" is used to describe someone or something that is completely dead or has died, and there's no chance of revival. It can also be used to describe someone who is still alive but behaves as if they are already deceased.

The idiom "say what" has multiple meanings, but generally, it is used to express surprise or disbelief. It can also be used to encourage someone to speak up or say something they have been hesitant to share.

The idiom "like a bat out of hell" means to move or behave quickly, suddenly, or recklessly. It is often used to describe someone who is full of energy and enthusiasm, or someone who is acting impulsively or recklessly without considering the consequences.

The idiom "between the devil and the deep blue sea" means to be in a difficult or precarious situation where there are no good options available. It suggests that one is caught between two negative choices, each with its own set of consequences.