You spell flako like that. It is flaco (skinny one, a slim person)
You should PM Tormenta with this discussion. Vulgar terminology is forbidden on this site and one portion of your post is definitely vulgar
I've been told it's a bunch of spanish slang, or poor spanish. My boyfriend (who speaks spanish) says "Flako" is like skinny and/or white guy (or something along that line) And he says "I will eliminate you" in there. But it's mostly slang...