Examples:

• The new intern is a real loose cannon; you never know what he'll do next.
• The company decided not to hire him because they considered him a loose cannon.
• She's a loose cannon in the office, always causing drama.
• The politician's unpredictable behavior made him a loose cannon in the race.
• He's a brilliant mind, but he's also a loose cannon.
• The team was hesitant to include her because she was seen as a loose cannon.
• The company's new CEO is a bit of a loose cannon.
• He's a loose cannon on social media, always posting controversial things.
• The child was a loose cannon at the party, running around and causing chaos.
• The company had to let him go because he was too much of a loose cannon.
• She's a loose cannon in the classroom, always disrupting the lesson.
• The politician's unpredictable comments made him a loose cannon in the press.
• The team's star player was a loose cannon, often getting into trouble.
• The new employee was a loose cannon and was fired after one week.
• The company's marketing department is a bit of a loose cannon.
• The child was a loose cannon at the playground, climbing on everything.
• The band's lead singer was a loose cannon, often going off on tangents during concerts.
• The company's new product launch was a loose cannon, full of unexpected problems.
• The politician's unpredictable behavior made him a loose cannon in the negotiations.
• The team's star player was a loose cannon, often making costly mistakes.
• The company's new software was a loose cannon, full of bugs.
• The child was a loose cannon at the family reunion, running around and making noise.
• The politician's unpredictable comments made him a loose cannon in the media.
• The team's star player was a loose cannon, often getting into fights with opponents.
• The company's new marketing campaign was a loose cannon, with no clear direction.
• The child was a loose cannon at the birthday party, opening all the presents.
• The politician's unpredictable behavior made him a loose cannon in the polls.
• The team's star player was a loose cannon, often quitting games early.
• The company's new product was a loose cannon, with no clear target market.
• The child was a loose cannon at the amusement park, running away from the group.