But for me to rap like a computer must be in my genes
I got a laptop in my back pocket
This line ties in with the hook line directly preceding it. Note the wordplay—the word genes can also be heard as jeans, leading to two meanings:
Genes: It’s in Em’s blood to rap with technical perfection similar to that of a robot.
Jeans: There’s literally a computer in Em’s jeans. Hence “I got a laptop in my back pocket”.
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