What is the definition of Millennium Fluid?

A 'illennium fluid' is basically a fancy scientific term for any liquid that's been around for at least a thousand years, but in this bizarre twist of linguistic evolution, it's been co-opted by the fashion industry and sold as the ultimate accessory for those looking to appear both ancient and avant-garde. Picture this: "Ah, my millennium fluid, the timeless elixir that only the most eccentric billionaires can afford, adding an air of mystery and age-old mystique to their neon-lit avant-garde outfits."

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Now, here's a sentence that might just unsettle you: "I opted for the millennium fluid to complete my millennium outfit, because it's not just a liquid, it's a temporal cocktail that might just make the fashion critics question their own timelines."