I come through with the yapper on

from 2 Chainz (Ft. Lil Wayne) – Yuck! Lyrics on Rap Genius

Meaning

Continuation of the previous line. 2 Chainz is saying that should the ‘baby daddy’ in question act up, he’s gonna put him off with his lyrical prowess as ‘yapper’ here would mean a chattering or talking (rapping)

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