From Urban Dictionary:
1. aff: a term used by brazilians in online games, most often in Tibia, whenever they encounter some slight misfortune, and sometimes for no reason at all. Aff is a br’s best friend.
br1: mi frnd pk u son of the bitch fuck
br2: afffffffffff noooooooo
player: hey would you like some free money?
br: AFF
player: ….what?
Koreanish 