Hold up, hold up, woah, don't be smokin' my shit
I be smoking that fire, and she be smokin' my dick

from Chris Brown (Ft. Big Sean & Wiz Khalifa) – Till I Die Lyrics on Rap Genius

Meaning

he’s sayin that he’ll be smokin all the weed up and she’ll be smokin his dick, a reference to oral sex.
Smoking Fire = Smoking Weed
Smoking Dick = Sucking Dick

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