What is the definition of Agreed Weapon?

An 'agreed weapon' is like two best friends deciding on a game of tag in the middle of a nuclear war - it's a literal and metaphorical match made in the most absurd, yet strangely practical, circumstances. Imagine this: "After dinner, Max and Jake agreed on the 'agreed weapon': a giant spatula from the kitchen. We spent the night arguing about who got to use it, then decided on a truce: no more food-related arguments until the end of the world!"