D.O.A. (Death of Auto-Tune)

The Blueprint 3 Jay Z
Remember the next lyric in the song is: "If your a gangster then this is how you prove it to me...Just get violent". Jay is saying to Prodigy, who he has had beef with, prove your still a gangster, talking about hanging in the PJs doesn't make you tough.
....Mobb Deep is of course famous for their rough, gangster rap style which no longer the style of hip-hop. Jay's point is, although he is from the Marcy Projects, he no longer needs to talk about it. On the other hand, Mobb Deep has not stopped doing so.
This particular lyric is directed at Prodigy of Mobb Deep. Who is still Rapping about how much of a gangster he still is. On Mobb Deep's 1st album "Juvenile Hell" the single that gave them street credibility was "Project Hallways". Mobb Deep is.....
I think he means... you don't have to go around saying.. yeah I'm from the hood... If you are you are... saying ain't go make you seem tougher...
a taunt usually used to vex a losing team or person.
decyphring fo f...
A classic chant in sports. It's usually what fans of the winning team start chanting to players on the losing team.
Jay-Z borrows this famous line from the chorus of the late 1960s number one hit pop-rock song "Na Na Hey Hey Kiss Him Goodbye" to bid farewell to the auto-tune phenomenon, hence the "D.O.A. (Death of Auto-Tune)" song title.
In the lyrics Jay-Z is saying goodbye to the use of Autotune in rap, officially blacklisting all rappers who "T-Pain" their songs after D.O.A. The lyrics are borrowed from "Na Na Hey Hey Kiss Him Goodbye" by Steam.
there is no meaning, it's just a chant. na doesn't mean nothing. hey doesn't really mean hello. it just all sounds good together.
He don't stand around talkin s**t all day, about doin this and that, like alot of guys...he's doing bigger and better things, he's got bigger fish to fry