the balloon [goes] up
1
used to indicate that a situation is about to become tense, difficult, or critical
The idiom "the balloon go up" has its origins in World War I and was used as a code phrase to indicate that an operation or battle was about to begin. The phrase now means that a situation is becoming serious or reaching a crisis point. During World War I, this idiom was used to indicate that a reconnaissance balloon had been released to begin observing enemy positions, signaling the start of an operation or battle. The phrase was used to alert troops that they needed to be prepared for action. Nowadays, the phrase is often used to describe a situation where something serious or unexpected happens, often causing a crisis or an emergency.
- If the government doesn't address the issue soon, the balloon will go up and there will be protests.
- If the negotiations fail, the balloon will go up and war will be inevitable.
- She is worried that the balloon may go up if her boss finds out about her mistake.
- The balloon went up when the company announced layoffs, causing a lot of stress and uncertainty.
- They have been preparing for when the balloon goes up and are ready to act quickly.