A higher more potent lean. It usually consists of 50%-70% cough syrup, soda, Black or dark food coloring (optional), and purple Jollyranchers only. The combination makes the lean darker than normal hence the term "Nightmare Lean."
Guy 1: Yo imma bout to drink some of that dirty sprite you want some?

Guy 2: Nah man your lean is for kids. I drink dat Nightmare lean and it'll have you passed out on your couch having nightmares.
by Ooooofslayerlol January 29, 2019
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