Speaking and not knowing how to talk will give the impression that you're ignorant. When you're with your guys, speak however you wish. But when it's time for a job interview, or meeting with an influential person, you better shake the hood talk and start the intelligent talk. How can someone take you serious when your mouth is full of gold/platinum teeth. Many famous rappers live like this right now. How you hear them spit on a track and in some TV interviews, is not how they talk with their lawyers or record/movie executives when their trying to negotiate a deal.