Go ask my pre-school, even talk to my old principal
He'd tell you how you I used to pack a No. 2 pencil
Stabbing students, grabbing teachers, Catholics, preachers

from Fat Joe (Ft. Big Punisher, Jadakiss, Nas & Raekwon) – John Blaze Lyrics on Rap Genius

Meaning

Nas is saying that he always used to pack weapons. Members of the clergy system have been a target also in Nas' True Dialect and Back to the Grill Catholics and preachers

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