These cowards gonna make a nigga ride
They won't be happy 'til somebody die

from Jay Z – Lucifer Lyrics on Rap Genius

Meaning

The people who try to insult and threaten Jay are irritating him more and more. At this rate, it might get to the point where talking shit won’t be enough and they’ll have to act upon their words before Jay takes matters into his own hands and kills them.

Why you fronting on him, is that necessary?

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