The only woman that Tupac could trust is his gun. As such, he wants to spend his time with his gun, since he can always count on his gun to defend him till the death.
The irony of this of course, is that Tupac didn’t take his girlfriend to Las Vegas. The album this song was on came out posthumously and the reality of his death is that the car he was riding was boxed in. Nobody did anything to defend Tupac.
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