But you forgetting the proof diminishes in the flames
Like 'poof',

from Lupe Fiasco – Glory Lyrics on Rap Genius

Meaning

You don’t necessarily have to be gangsta to rap like a gangsta. Therefore, when people are entertained by what you are saying, the proof behind what you are saying becomes irrelevant.

To help improve the meaning of these lyrics, visit "Glory" by Lupe Fiasco Lyrics and leave a comment on the lyrics box

But you forgetting the proof diminishes in the flames Like 'poof',

But you forgetting the proof diminishes in the flames
Like 'poof',