1. In the form of encouragement to get somebody to do better than they're currently doing(Which is probably sucking at
whatever video
game they are playing, usually Dark Souls).
2. In the form of heckling to berate someone by telling them that they are
terrible at what they're doing(Used mostly while playing Dark Souls).
1.
Friend 1: I'm trying to play Dark Souls but this one
player keep invading me and kicking my ass.
Friend 2: Dude, just git gud. You'll get there eventually.
Friend 1: Yeah, you're probably right.
2.
Casul
gamer: Dude, what the fuck? I was trying to heal!
Hardcore
gamer: Git gud, skrub.