Idioms from lyrics

[learner142]

Here I will post idioms I found in the net.
spit a little G man. What is the meaning?

 

[emsr2d2]

I think someone pointed out in your previous post that song lyrics don't always make sense and they also use a lot of slang and colloquialisms. I have absolutely no idea what this line is supposed to mean, other than the fact that in AmE, "a G-man" is someone who works for the government.

 

[Tdol]

This site suggests the lyrics are spit a little G, man, and it means a game. However, I am afraid I have no idea what that means: http://genius.com/21462. I think I am too old for this sort of track.