The phrase comes from Italian, where l'area del pentagono is the standard classroom way to refer to the surface area of a five sided polygon. As a soundboard clip it has little context beyond that repeated term, so its spread relies on how funny a formal geometry phrase sounds out of place. It circulates in short meme edits, study related posts and Italian language humour, where users treat the serious wording as a mock dramatic announcement. Its appeal stays in that mismatch between school terminology and casual online timing.