The Glow Clouds meme primarily stems from the popular fiction podcast Welcome to Night Vale, where a sentient, glowing cloud rains animal carcasses and eventually joins the school board. The phrase 'All Hail the Glow Cloud' became a shorthand for blind obedience to absurd or mysterious cosmic entities. Beyond the podcast, the term is also used to describe nacreous or iridescent clouds and rocket exhaust plumes that illuminate the night sky in vibrant colors. In meme culture, it serves as a way to poke fun at eldritch horrors, bizarre weather events, or simply anything visually mesmerizing yet slightly threatening appearing in the atmosphere.