Saying "I'm serial" and making it sound badass!
At first glance your song may seem like it strattles the line between being gansta and being lyrical. Since I'm an avid hiphop listener I know downright this is a lyrical barrage of madness. So I wouldn't worry about the hater because you were on point the whole way man.
The only beef I have with the song is it's too in your face the whole time. You could have used the chorus to slow things down a bit to change up the pace. That's just my personal preference though. Good job man.