Just penetrating her throat, dawg
She choke on it like smoke, dawg

from T.I. (Ft. B.o.B, Kendrick Lamar & Kris Stephens) – Memories Back Then Lyrics on Rap Genius

Meaning

Whether you’re smoking or giving head, you’re gonna have to contend with your gag reflex

The line where he mentions “She choke on it like smoke, dawg”, it could also reference Chris Tucker’s character in the movie, Friday, where he calls himself “Smoke Dawg.”

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