The idiom "heads will roll" is a metaphorical expression used to indicate that someone or something will suffer severe consequences, often involving violence or destruction. It suggests that the people or things involved will be completely wiped out or eliminated.

The idiom "pull yourself together" means to get organized or compose oneself, especially when feeling disrupted or upset. It can also mean to gather one's thoughts and make a plan of action.

The idiom "at daggers drawn" means to be extremely hostile, bitter, or in a state of conflict. It implies that the parties involved are ready to engage in physical violence.

"Take up the cudgels" is an idiom that means to take on or assume a responsibility, task, or role that one has not previously had or agreed to. It can also mean to defend or champion a cause or person.

The idiom "I'll eat my hat" is used to express shock, surprise, or disbelief. It means that the speaker will do something extremely unlikely if a certain condition is met. For example:

• "If you win the lottery, I'll eat my hat.