You listened to a couple of dubs and copied them, I got a thing for the spitters in war I duppy them

from Wiley – Soundboy Killer Lyrics on Rap Genius

Meaning

Wiley’s contenders are seriously lacking creativity, recycling old stuff he’s heard all before.
When it comes to lyrical face offs though, he comes out on top, duppying them.

(Duppy is old Jamaican referring to slang, but in modern use it used as an insult when someone disrespects or beats somebody else up).

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