It's supposed to be used jokingly (please dont killpeople..it's not nice)
It's explained in its self.. not much else I can say.
You've been my b.f.u.i.k.y for almost 5 years, and although you can piss me off occasionally, your the coolest person I've ever met and I love you bro, you're not LIKE my sister, you ARE my sister..
pronounced like kicks with a "G". It stands for Girl I am Kind of Seeing or Guy I am Kind of Seeing. Refers to anyone that you wouldn't consider a girl/boyfriend or even someone that you are dating. Basically you hang out from time to time and probably screw around a little bit.