What is the definition of Cheapest Weapon?

The 'cheapest weapon' is a term that humorously refers to the most affordable, yet utterly ineffective tool in your arsenal - like a cheap plastic pepper spray that just makes everyone look like they're auditioning for a bad sitcom. It's so cheap, you'd think the enemy had decided to throw in a whole box of confetti instead.

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Now, here's an unsettling example sentence using the term: "In the face of existential dread, the most cheapest weapon I found was a well-worn, expired bottle of expired soda."