Perhaps you've noticed yourself that you act (I hope) different at your parents home or in chuch, should you go to church.
Naturally, when I am in a business meeting with investors, producers, and people in the music/film industry, I don't speak using slang.
If I'm visiting a friend that has a toddler, I speak differently than if I am giving a key-note speak about crimes against victims with disabilities, or teaching a CPR class.
If I'm in my living room, with my close family, I speak in an appropriate manner. If I am with my homies, like the other night at Lynch's with Rip, Tall Cann and COS, I speak in language appropriate to the conversation.
Imagine THAT!