I’m staring at the pain in the mirror, or is it a facsimile?

from Joe Budden – Pain Won't Stop Lyrics on Rap Genius

Meaning

A facsimile is a copy or reproduction of an old book, manuscript, map, art print, or other item of historical value that is as true to the original source as possible.

Joe is starting at the mirror and sees pain, the pain being himself; The original source of the pain.

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