I invest in a vest and makin niggas watch they every step
He says to be investing in his own safety and the safety of those around him. He bought his body armor and thats what he means by “makin' niggas watch they every step”, it’s so that his enemies will have to watch themselves. He also wants to look after his own safety and his friends, (members of the Outlawz gang). It is also a known fact that Tupac wore a vest everyday, with an exception on the night that he was fatally shot and ended up dying just a week later.
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