add: This is short for additional monsters needed' and is used when the monster you are fighting is an easy kill and the doc feels the team can handle more. When you hear this, run into Other rooms and pull more monsters into the fight. afk: This common term stands for "Attack, Fight, Kill" and is the doc's way of telling you to go pull mobs. brb: An acronym, this is short for "Boss Room Battle," and is a doc's way of telling the team it's time to fight the dungeon or mission boss. Note that you will also sometimes see "afk brb," meaning the same thing.