Kim Lip saw Orbits talking and she changed her part to "wanna be the cookie" and laughed haha

it's at 5:53 wait for it :-D

and another one

Quote from BlackpinkHouse

I literally thought that was the lyric when i first heard the song lol. Cookie sounds better than "cool kid" tbh.

that's true

Orbits were talking because it sounded like cookie, but subtitles said cool kid xD

maybe she was baffled when she saw it and decided to clearly sing cookie now because it's also easier this way.