Late night I hear toothbrushes scraping on the floor
Niggas getting they shanks, just in case the war, pops off
Cause you can't tell what's next

from Snoop Dogg – Murder Was The Case Lyrics on Rap Genius

Meaning

Because prisoners are constantly at war with little factions within the jail, they often find ways to make weapons out of assorted objects they have in their cells, like tooth brushes. They sharpen the tooth brushes to give them a sharp point to stab other inmates with.

To help improve the meaning of these lyrics, visit “Murder Was The Case” by Snoop Dogg Lyrics and leave a comment on the lyrics box