What is the definition of Geometry Weapon?

A 'geometry weapon' is a fancy term for a mathematical concept or technique that, in the right hands (or head), can turn the tide of any argument. Imagine a deck of playing cards - suddenly, each card becomes a potential 'geometry weapon'. A Queen of Spades might knock out a debater with her precision, while a 3x3 grid could strategically divide a room into two opposing factions.

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Here's an unsettling example sentence: "To silence the dissenting voices, the oppressive regime deployed a 'geometry weapon': a rigorous application of Euclidean geometry, proving that no one can escape the confines of rational thought."