I’m futuristic, clean mine with the seashells

from French Montana (Ft. Action Bronson) – Mean Lyrics on Rap Genius

Meaning

References the 1993 film Demolition Man where Sylvester Stallone plays a cop who is brought out of suspended animation in prison to pursue an old ultra-violent enemy who is loose in a nonviolent future society:

http://www.youtube.com/watch?v=9mFuB0gsNAA

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