엄마.

Edison had many questions which seemed impertinent at that moment. Nevertheless, he became as we all know.

"엄마, 왜 엄마는 엄마의 엄마를 엄마라고 부르는데, 왜 난 엄마의 엄마를 엄마라고
 부르지 못하는거야, 엄마?"

"야, 임마!"

Any guesses on what she will become?
Leave your answers on the comment box below.