A male who puts on a facade that he is a lot more connected to the streets (drugs, gambling, prostiution, hits, etc. ) than he really is. These individuals usually have an extremely small connection to the street, but give the impression that they are John fucking Gotti himself.
John: Hey Mike said his second cousin's, wife's boss will take our bets for the upcoming football season. Mike's the man!
Sammy: His second cousin's, wife's boss??? That mother fucker is a nothin but a Bubble Gum Gangster!