Slang term that holds the place of almost any adjective. Can be used as a positive or negative placeholder or for when you just forget the word you are looking for......
Did you hear what Carolyn did last night, that girl is such a hoobie-koobie
That Damn prick is such a hoobie-koobie
Did You see that frickin hoobie-koobie jump the tracks, dude is like fly
That hoobie-koobie just went and did it again
Where did you go and put that Damn hoobie-koobie this time
Where is that side beta when I need him, such a hobbie-koobie
Kookie is pet-name, or nickname for Jungkook, or Jeon Jeongguk, a member of a KPop band called BTS (Bangtan Boys). Jungkook is the maknae, or youngest of BTS, and adored by many.
@kookie.d_ (on Instagram) a.k.a Mayu, is a popular BTS ARMY meme account, she is Indian,she has a fanfic account @right.fics also on Instagram, @kooksclown on Twitter,she also has a private Instagram, her followers found, so did I, it's @mayuu.15 , Mayu if you see this, I am detective Conan!
STAN MAYU
Friend: Did you see @kookie.d_ 's new Instagram post?
Me: Yes, I did, my fav is the 5th slide, it's so funny