What is the definition of Concerns Weapon?

A 'concerns weapon' is like a superhero with a sidekick who's always whispering about all the things that might go wrong, but has no actual superpowers. It's the weapon of choice for those who are more worried about what could potentially go haywire than about actual threats.

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Here's an edgy example: "Last week, the 'Concerns Weapon' of the town decided to shoot the breeze about our new coffee shop, claiming it's going to be 'too trendy' and 'overly concerned with micro-trends.'"