A fork of Rural Dictionary
E.L.F. (Everlasting Friends) is the name of the fanbase of the South Korean boy group Super Junior. ELFish refers to the fans of Super Junior's Donghae, due to the fact that his name in Korean literally means East Sea, and many people think he resembles a fish.
A: Are you a fan of Super Junior's Donghae?
B: YESSS!!!!
A: Then you are an ELFish, right?
B: Of course!