A term, derived by underground and SoundCloud rappers in 2019 from Wayne State University to refer to 4-aco-DMT, a semi-synthetically produced research chemical and psilocin analogue. Forko is often snorted (a.k.a. champin'), or 25mg doses dissolved into liquid and drank for its hallucinogenic effect. It's much smoother and produces less nausea than psilocin, and its visuals are often more DMT like at 60mg+ intranasally. One should be of sound mind before trying forko, because like shrooms, it's gentile to those who respect its potential power.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.