Top definition know those people who really arent from the streets but try to act all hard like they are?... yup those are the ganksterrs
2. just so frign cool
often used when talking with just your friends or taking a pic...

EX:danica-"y are we so cool"
amanda- "wer not cool wer GANKSTERR!!!!"
by nyorka February 10, 2007
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