Seven said, "You keep giving them crack, they gonna lose all of they teeth."
But I'm cool with that G
Cause that'll prevent all these broke MC's from biting me

from XV – Everything Is Cool Lyrics on Rap Genius

Meaning

One of the many negative side effect of smoking crack is that the teeth can fall out. XV says at least they can’t copy him if that happens, because copying is referred to as biting, so if they have no teeth (due to usage of crack), then they can’t bite him. XV took the literal meaning of crack heads not being able to bite him, into a vey clever line.

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