As sharp as 8 guitar picks
Fitted with lasers on 'em
I'm getting Asian on 'em
Do the math

from Jean Grae (Ft. Pharoahe Monch) – Killin Em Lyrics on Rap Genius

Meaning

Jean imagines a dangerous weapon involving lasers, such as might be used by a ninja assassin

She then puns on the stereotype of Asians being good at numbers, while punning on the idiom “do the math”

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