Porkchop started as a handle when I started driving many years ago, now it’s not a handle...it’s my name. Everybody calls me by that name, well almost everyone. What my wife calls me I won’t put up here, don’t want a warning.
The slang, I don’t guess so. I still hear 10-4 and 10-10 on the radio while I’m at work. I hear city cops referred to as “city kitties” and highway patrol called “full grown bear”. A DOT guy is a diesel bear. That’s about it.
I also hear “top shelf” referring to someone’s radio quality. But the jargon that I guess used to be used, I don’t hear that any more. I’d say just make yourself a handle up of some sort and get on the air. Also, welcome to the forum.