What is the definition of Rayshade?

"Rayshade, my friend, is like a cosmic version of a bad hair day gone wild. It's the faint, ethereal glow that dances across the edges of shadows, making your eyes feel like they're staring into a perpetual twilight, except instead of night, it's just an overcast sky of existential dread."

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And here's a drizzly example sentence to really hit the unsettling vibe: "The rayshade crept across her face like a cosmic vampire, stealing her sanity one shadowy second at a time."