So now I'll crack a Philly D, fill my Philly with givin' tree

from STS – STSisGold Lyrics on Rap Genius

Meaning

STS is filling up a Philly blunt with marijuana, this is a name he established for it earlier in the song
This could also be STS saying that he will give back to Philly once he is successful…or at least distribute some weed

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