you should know i'm............

In the Korean comments

One commenter reveals what they were watching for: in translation, “I kept waiting to see when she would suddenly jump.” Another frames Wonhee’s appearance as a transformation, asking, “아니 언제 아기 기니가 으른 기니가 됬어” (Wait, when did baby Gini become grown-up Gini?), before asking for “baby Gini” back.

What the words mean

으른 (eureun, grown-up) is a deliberately cute rendering of 어른 (eoreun, adult). Here, “grown-up Gini” is not a formal statement about age; it playfully emphasizes how mature Wonhee appears in this clip.