The superlative form of "gangsta" which in turn is a superlative form of "gangster", for when the latter is not enough. Ergo, ganksta > gangsta > gangster.
A meaningless, unimpressive, self-serving introduction. An indicator that the story about to be shared will be pointless and dumb.
Back when I lived in upstate new york, I also had to park on the street - on two occasions, we got enough snow, mixed with just the right plowing, that my car was lifted off the ground from so much snow being jammed underneath it.