Originating in various college campuses throughout the United States, it typically describes a state of prolonged absence from social life due to tests, term papers, etc.
Hey man, I haven't seen you around the house for like 3 days, where have you been?
Sorry, I've been ghost mode because of 3 finals and a 8 page essay, all in one week.
When you havent heard from a friend in a while
I havent talked to Adam in like 3 days, he most have went ghost-mode on me.
(adj.) Asleep; passed out
Believed to be from video game origins, or simply being unavailable or nowhere to be found.
Man, why weren't you in class?
Dude, I was ghost mode on my floor.
When a driver of a vehicle turns all of their lights off (especially headlights) during driving at night.
Kyle went into ghost mode and I freaked out, what if someone hit us!