My big brother was B.I.G.'s brother
from Kanye West – Big Brother Lyrics on Rap Genius
Meaning
Jay-Z had a close relationship with Notorius B.I.G until his death. Given that Jay succeeded Biggie as the biggest deal in hip-hop, Kanye is setting up this analogy (people who took the SAT before 2005 will remember analogies)
B.I.G.:Jay-Z :: Jay-Z:Kanye
Jay-Z even once said “I am Plato to Biggie’s Socrates” (which would make Kanye Aristotle). Plato was Socrates' student, and Aristotle was Plato’s student.
Overall, a very humbling compliment that sums up the same relationship Kanye and Hov have.
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