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.
Used by Greaser subculture in America to refer to someone as nuts, crazy, wild, out there, etc. It was not an insult, but a nice way of telling someone they are crazy.
Greaser 1: Cool it, here comes that cat Johnny.
Greaser 2: He'd be bad news if he wasn't kookie.
She's his main squeeze. Girls try to be like her, but she is one of a kind. She's cool and up front. She handles it all. She's tough, She wins. She got everything you want. Bad boys Love her, a Good boy is what she is looking for. Girls talk shit but she ain't even hearing it. Her beauty is sinful. Even your girlfriend will be in love.
Group of guys: hey is that kookie?
Their GF's: omg O.O
Kookie: yeah,even you girlfriendslove me ;)
A girl with a really cute name, that guys can't get over. She is cool, and has natural beauty. She's a good girl, and is very honset. Their is only One of her.
group of girls: is that kookie?
kookie: yea, its me O.o