kasiaist 

someone who, after many months or years of being close to, still has little things being found out about them (like the ocean or space)

Jeffrey: "How long have you been with Sarah?"
Robert: "3 years man. And I'm still finding out the strangest stuff. She's such a kasiaist."

kasiaist by your_favorite_korean June 24, 2018

Kasiastan 

n., country (Eastern Europe) slang for the nation of Poland, where Kasia is the name of 1/3 of the population. Also, the mystical realm of any Kasia's vagina.

Go back to Kasiastan!

Dude, I just got some bomb ass Kasiastan.

Kasiastan by DrOxford December 14, 2010