Grid-zombie- A human being that fears "deautomatization" and continues, constantly in the habitual psychological structures that organize, limit, select, and interpret perceptual stimuli. I.e.; limiting one's self to a very confined "comfort zone" of location and behavior. See: Steel cocoon.
I traveled 6,000 miles on foot and by thumb, from one end of this land to the other, sleeping in the woods, while all you grid-zombies traveled 12,000 miles, in your rolling, steel, cages in a 7.5 mile radius from your steel cocoons.
A person that is addicted to social media, chatting, calling games and other apps beyond normal usage and displays addictive behavior making them display zombie-like behavior.
People who have completely disconnected with society in the physical and sociological sense via electronic media devices or people who have become brain dead due to said previous.
Man, Harold has become a neo-net-surfing-zombie. All he does is text and surf and twittle and smurf. May as well be smokin' crack.