Top Definition
The art of being ganster, and or a goon. Or you could just be Nick Pipes or Chris Cutlip.
Nick: What are you doing today?

Chris: Prolly going to pick up some hoes.

Nick: Dude, that's fuckin' Gtastic.
by GoonAndOrGoblinAndOrGangster April 03, 2011
The feeling of being extremely hood or fly.

As Arnold took a stroll around the park, he sported a very G-tastic mindset due to his very nice pair of Adidas.
by DDM?! December 22, 2008

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