A way to tell someone your going to bed when you're to lazy and tired to say goodnight.
Person 1: Alright I gtg to work in the morning so gn.
Person 2: Ok, gn.
(Person 1 watches YouTube for an hour and then complains in morning that they "didn't sleep well")
(Person 2 actually goes to sleep)
a way of telling someone to “get naked”
Hey dude you wanna gn with me later tonight?