Your bitch bleed, bitin' her nipples with my chipped tooth
I drink her blood, like I'm Dracula,
1) Your girl is bleeding because Nas was biting your girls nipples hard with his chipped tooth(he used have a chipped tooth before he one of hip hop’s most handsome rapper), and he would later drink her blood like Dracula (the famous vampire)
2) Also, to bleed also means to sell drugs or partake in similar illegal activities. So your girl has sold Nas some drugs and Nas has consumed them like a Dracula consumes blood. For Nas, drugs is his blood, it’s his life in the stressful ghetto.
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