The idiom "skeleton in the closet" refers to a hidden secret or shameful act that someone wants to keep hidden from others. It implies that there is something unpleasant or embarrassing about the information being withheld, and it could cause harm to the person if revealed.

The idiom "until the cows come home" means that something will happen or continue to happen for a very long time, possibly even forever. It's an expression used to describe a situation that is expected to persist beyond a reasonable amount of time.

"Clarion call" is an idiom that refers to a strong, clear, and persuasive statement or message that calls people to action. It can be used to describe a speech, announcement, or any other form of communication that inspires or motivates people to do something.

The idiom "you know better than that" is used to express a disbelief or disagreement with someone's actions, behavior, or decision. It implies that the speaker knows more about a situation and believes the other person should have acted differently.

The idiom "in hand" means that a situation or matter is within one's control or possession. It can also refer to a physical object or document that one possesses.