Bastardization of gangster. Gankstar is used to refer to those who try to be gangsta, usually white kids from the suburbs. See also wigger. Can also be used as an exclaimation.
1.
Christopher: Yo yo shorty you be lookin' mad fly dawg like hella tight yo!
Carl: What a gankstar, he thinks he's a pimp and the girls walk right by...
2.
James: Holy shit, look what Carl did!
Jessica: Gankstar!
Gacktard; noun- 1.) A word refering to an idiot who is completely in love with Gackt and is willing to defend him from any insults, even if it is just a minor one. 2.) An obssessive fan of JRock or Visual kei who writes in Engrish or any other form of English that makes no sense and completely abuses his or her exclaimation marks, often mixing them up with '1'. 3.) An idiot.
1.) That gacktard bit me when I said that Gackt looked like a woman from behind!
2.) I was at a forum when a gacktard corrected me for mispelling 12012.
3.) That guy is such a gacktard for runningoutside without his pants on.