So much 'shrooms and acid that my thoughts
Are tangled and twisted like gangbanger fingers

from Flatbush Zombies – Regular and Complex (GNB) Lyrics on Rap Genius

Meaning

Acid = slang for LSD

Mech does so much psychdelic drugs that he always has alot of toughts, and these toughts often twist like the Fingers of Gang Member
http://www.youtube.com/watch?v=dt4xpHHsB5g

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