Song meaning of 17 Wit a 38 by IDK (Ft. Chief Keef)

Well, isn't this just the ultimate bad boy anthem? The song starts with IDK setting the scene for some "dirty stinkin' nasty ratchet rowdy shit" and what do you know, we have a young man with a .38 in his possession at just 17 years old - because why not? Apparently, he had something to prove to the world, and what better way to show it than by packing a weapon? But don't worry guys, he didn't actually use it, it was just a fake - or so he says. Instead, he preferred the classic activity of robbing white people and selling their stuff at school for a profit. Oh, and let's not forget having sex on his mom's bed (yikes!). Meanwhile, Chief Keef is rocking a .357 at the same age, driving around in his all-black Ghost Rider car with a "swiper on him" (which I can only assume is some sort of stolen credit card). These guys are just full of surprises, aren't they? It's like the ultimate gangster fairytale where instead of a prince on a white horse, we have a dude on a Humvee with a weapon, and instead of slaying a dragon, they rob people and sleep with their mom's on their beds. Wild.