Spark is a drug used only by robots. It is associated with the robotic criminal underclass, and seems to be roughly equivalent to the human drug Crack. It is similarly smoked from pipes, although Spark pipes bear appear to feature plasma globes as the major element on their construction, and likely the source of the eponymous sparks.
Related Drugs: Comatonin, Dr Flim Flam’s Miracle Cream, Electricity, Ocephalus Nectar, Slurm & Space Honey