Internet Thugs Attack

Major Pain Chamillionaire
He is swearing in his song the same way people swear online. F U K you obviously means Fuck you.
Karanastic
when typing in all caps, you are 'shouting' your message.
Unplugged
Refers to Twitter and celebrity culture.
Unplugged
Chamillionaire's going to shoot up every car the other guy has
Lyrical_Dagger
Your lyrics are of such inferior quality that I wouldn't bother to challenge you.
foxmajik
he's insuling you by saying he will first disrespect you and your team/state by knocking the ball cap off your head, and since you like to show off he suggests you photograph your embarrassing moment and use Twitpic.com to post the picture to Twitter
bill