A way to say goodbye to somebody you don't expect to see again (in this lifetime).

Can be used positively, with emphasis on the prospect of seeing them again, albeit in another lifetime.

Also can be used negatively, with emphasis on the implication that you won't be seeing them again THIS lifetime.

Derived from the catchphrase of the character Desmond on the TV show LOST, who would frequently say, "I'll see ya in another life, brother"
Soldier 1 (wounded and dying): I don't think I'm gonna make it, man...
Soldier 2: Hang in there, buddy, I'm right here.

Soldier 1: I see the light... I'm going towards it...
Soldier 2 (crying): I'll see you in another life, man. Say hi to my brother for me.

Guy 1: Dude, come on, we've been best friends for 6 years, you can't seriously be THAT mad about me sleeping with your girl.
Guy 2: Yeah... you can fuck off. See you in another life, man.
by srzsn January 13, 2017
A term used to tell another person that you will see them again. Most likely in a strange place or somewhere unexpected. Usually used by two guys, while using the term "brother" as a friendly gesture.
In the TV show Lost, Desmond was known for this phrase.
Desmond: "I'll see you in another life brother."
Jack: "Sure man."
Then they see each other again life 100000 times...
Lost Brother Life Meaning Bro Sex I'll See You Again Pick Up A Stick And Throw It Yo mama Strangers
by TheMysteriousStranger June 1, 2012