The first line is...
Jiggas and figgas of coolie faced shadow boxers
Under cover faggot lovers
Dig my Salie Struthers...
First of all you must understand where this is coming from...It's 70's blaxplotation slang.
So jiggas and figgas are just that...jigs or coons so to speak.
Coolie faced is a reference to Coolie High and it meant just that being the coolest of the cool.
Shadow boxers are the same as today just people who play games.
Salie Struthers was on All In The Family with Archie Bunker who was about as ignorant as you can get.
So you put it all together and you get some coon ass dudes who are trying to fool everybody into thinking they cool but in reality they are faggots. The next line about Salie Struthers is like his apology for being ignorant by calling dudes faggots (Archie Bunker) but he calling them like he see it. Just like Archie did.
The pretty shit was just that. Pretty Tony or Ghostface for instance. It was nothing for a dude who was light skinned adn acted like he was high class shit or a pimp to call himself Pretty. So he said he fucking with some pretty brown niggas as in like it's an oxymoron. How can you be pretty AND brown. To a dude in the 70's that shit made perfect sense. Ol pretty brown nigga!