What is the definition of Establishment Fluid?

An 'establishment fluid' is like a superhero with a very flexible suit, but instead of saving the day, they just waltz in wherever they please and start making everyone question their life choices. Imagine it like this: "After the establishment fluid burst onto the scene, the local diner's menu suddenly became a secret agent handbook, and every customer started wondering if the coffee was a plot twist or just another caffeine rollercoaster."