The idiom "in the cahoots" means to be secretly or conspiratorially involved with someone or something, often to plan or scheme against others. It can also mean to be in a friendly or informal relationship with someone or something.

The idiom "hang up" means to disconnect a telephone or end a call, especially abruptly or rudely. It can also mean to terminate an agreement, relationship, or engagement. The figurative meaning of the idiom is to end something suddenly and unexpectedly.

The idiom "high time" has a figurative or metaphorical meaning that refers to the best possible opportunity or moment for something to happen. It implies a sense of urgency and timing, suggesting that if an action is not taken now, it may be too late.

The idiom "white paper" refers to a comprehensive report or research paper that presents detailed information on a topic or issue. It is often used in academic, professional, and business settings to convey complex ideas and recommendations.

The idiom "caught in the crossfire" means to be caught in a situation where two or more conflicting forces are attacking each other, and you become collateral damage. It can also mean being caught between two difficult choices or being inadvertently drawn into an argument or dispute.