What is the definition of Races Fluid?

A 'races fluid' is like a superhero's secret weapon, except instead of superpowers, it's the ability to seamlessly blend into the background or change its form at will. It's like when you're in a crowded room and suddenly, your outfit morphs into the latest trend, making it impossible to tell if you're still you or just a costume gone wrong.

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But here's an edgy example sentence: "In the heat of the moment, the race car driver's car raced fluidly through the fog like a ghost in a bottle, leaving a trail of confusion and bewilderment."