An abbreviation for the the phrase 'full of asians', meaning that the place/event in question has a dominant population of asians in which all other races or people are the minority.
I heard that the city of Berkeley, CA is flasian, mainly because of the University of California, Berkeley. I hear Japan and San Jose are flasian too.
Fleastank is the type of person to act up on all the men he can get his hands on, even though he has a shake appointment he some how manages to make time for osu.