Thank you. I also hadn’t realized this was a 2013 zombie.
Not directly as slang, but yes. The way I’ve heard it used, it’s not a direct replacement word. It’s used more like a “let’s go talk to the boy” where the boy is actually heroin. It allows you to talk about it in public while sounding like you are talking about something else.
This song is 20 years old, but I guess the OP would say the members of Third Eye Blind never did meth/speed/whatever:
Doing crystal meth, will lift you up until you break
It won’t stop, I won’t come down
I keep stock with the tick-tock rhythm, I bump for the drop
And then I bumped up, I took the hit that I was given
Then I bumped again, then I bumped again
I knew heroin addicts who specifically referred to the drug as “boy”. That may have just been a sort of local misspeak but it’s definitely what I heard. I didn’t ever know if it was a widespread term or not tho.
Pretty much all the professionals I know in the court system call it meth. Judges, lawyers, cops, counselors, etc.
Given your username, it’s understandable. 
Sheeeit, “marijuana aficionados” are about the most pretentious, smug hipster assholes around. My god, it’s just fucking weed. Im sorry, maybe I’ve just been smoking weed too long but there isn’t even a hint of difference to me between good indica and good saliva (or good hybrid), much less specific strains. Good weed gets me stoned, mildly euphoric, hungry and relaxed. Whether it’s saliva, indica or a hybrid.
Meth?
I think you’ve definitely been doing too much weed if you resort to smoking spit.
If you can’t tell the difference between a good indica and a good sativa then I’m sorry, you are getting shit weed. Sure, most low-potency hybrid weed is very same-y, but the really good stuff is not. Especially with strains that are above 15-20% THC, I find the differences between the high you get from each are extremely different. This is even more true now than when I started toking 25 years ago.
LOL. No. I’m really, really not.
The kids I represent call weed “tree” now. It is weird. I don’t know if that’s a northern Virginia thing. I call it weed. They know what I’m talking about when I say weed. But they call it tree.
Meh.
Actual zombies don’t use the term zombie.