A killer before the crime, a B.I.G. before the dyin'
The Notorious B.I.G.
Alternatively, the lyrics could have been “a B.I.G. before the dime”. Biggie Smalls was known to have been a drug dealer before his rap career took off. That would mean the lyrics say that Big Sean right now is like B.I.G. when he was a dealer, before he made it big, and thus, Big Sean foreshadows that his rap career has barely taken off at the moment.
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