[gtvwill]

Most certainly, Australia has a plethora of drug related tattoo meanings. E.g. "route 66" road signs are associated with speed use amongst some circles.

[knughit]

Why do people tattoo their specific drug addiction/use? Does it serve some purpose, like untraceable/unprovable communication to set up drug deals?

[marshray]

I guess it's kind of like having a Github sticker on your laptop.