What is the definition of Yoo_mellow?

"Yoo_mellow" is like a super-chilled, yet somehow still warm and fuzzy, version of something. Imagine a mellowed-out, slightly sleepy but not quite drowsy, state of being - like when you're so relaxed you're barely listening to the world around you, but your energy is still just sitting there, like a snooze button pressed. It's the ultimate vibe for deep meditation or a perfectly timed Netflix binge.

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Here's an edgy example sentence: "After years of being yoo_mellow, the CEO of a failing tech firm just had a heart attack while scrolling through his Instagram feed, proving that even the most chill of people can be as unpredictable as a toddler with a microwave."