She slowed me down and had me guzzling on cups of lean

from DJ Khaled (Ft. DJ Premier, Nas & Scarface) – Hip Hop Lyrics on Rap Genius

A reference to the Chopped and Screwed style of Hip-Hop which is very popular in Houston. Lean (cough syrup and sprite) is the drink of choice for many rappers.

It has widened in popularity, with all kinds of rappers from all over drinking it (members of TDE, for example mentions lean frequently in their songs)

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