BRBASAP
BRBASAP means Be Right Back As Soon As Possible, it could be used to tell somebody that they need to be back as soon as they can, which can be used if somebody needs to be afk and says "brb" or "afk", in which case, you could say "BRBASAP tho"
Here is An Example:
Person 1: "Hey Uhh, Afk I gotta Take Out The Trash."
Person 2: "Alright, But BRBASAP tho."
Person 1: "Hey Uhh, Afk I gotta Take Out The Trash."
Person 2: "Alright, But BRBASAP tho."