a saying from the fifty shades of grey trilogy, that has now become a cute way of saying goodbye to someone. Christian Greys brother was the first one to use it, and through out the movie CG used it to say goodbye to Anastasia.
1. When you say goodbye to your mom.
2. Say to friends or random people disregarding the first definition, another form of goodbye to make fun of your n00b of a mom.
Son or Daughter: Aiight, i'm out mom Mom: Bye, have fun
Son or Daughter: Laters mom
-or-
Son or Daughter: I'm going now dude
Friend: Aiight, laters
Son or Daughter: Yeah, laters mom
Friend: LOL