Suju's ELF : From where did Eunhyuk came up with his tag line?

Well, if im not wrong, tat's wat his hyung,Leeteuk always said in korean variety shows, whenever someone is performing, Leeteuk will just shout out randomly," NAEGA *the person who is performing*IDA! " And soon eunhyuk and other suju members stared to use tat famous phrase from Leeteuk. Hope tat it help :)