Yeah, you could blame it on my blood line
How my uncle sold cold crack and heroin

from Gillie Da Kid (Ft. Pusha T) – Tryna Get Me One Lyrics on Rap Genius

Meaning

His fathers brother (uncle) was already a crack dealer. This made entry into the drug game even more appealing and easier for Pusha and his brother No Malice

Note The play on “blood line”, it may have came through his metaphorical blood line but when you do a “line” of coke it goes into your “blood” stream!

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