It means he was taking opioids and “nodding” which is when you basically start kinda falling asleep, in a sense. Ever seen the video of the cashier at a convenience store who is so fucked up his head is falling back and his eyes are closed? That’s nodding. I have no idea who the person in the photo is, though.
Yeah, but I’ve seen people who’ve been up for days on uppers. They don’t nod. They’re…paranoid and sweaty. And they look like shit. I was assuming “geeker” has turned into a catch-all since I got out of the drug world. But yeah, back in my day I was more familiar with “geeking” as being amped on uppers. Damn kids these days