There are many times when fights have occurred over the use of a word that in one region was a good thing while in the other was a bad thing. A little education would go a long way in bridging gaps in our societies. In many areas across America, the comment "dog, man, you bad” could mean something different depending on whom you are speaking, yapping, conversing, jawing, gabbing, talking, yammering or spittin’ with.
Knowing not only how the English language is intended to be used can help you in communicating effectively. You can practice your English skills, both written and verbal by thinking writing and speaking in complete sentences. When you are responding to a text message, we all have full keyboards now; there is no excuse, type the entire message out longhand. When you send an email invitation to lunch with friends, use proper long hand, old school English. Instead of just spewing curse words at that person that needs to be assaulted in some way, when it will likely get you in trouble, how about a gentler approach by advising them to "Have an aeronautical sexual assault on a piece of centrifugally motivated perforated pastry.” Walk away and wait for everyone to slowly catch on. It sounds so much nicer than the alternative. Consider that every time you communicate, it says something about you. What that message is, is entirely up to you.