Slang’s have become very common in chat’s, Sms, emails. People new to these slang’s find really difficult to understand converstion.On the other hand it saves a lot of time and effort if slang’s are used. I will give the most commonly used Slangs with there meanings that are used in facebook chat or Sms. Here are the Most Commonly used Facebook chat slang’s ASAP As Soon As Possible GN Good Night M/F Are You Male or Female? ASL Tell me your Age,Sex and Location IDK I don’t Know SD Sweet Dreams BRB Be Right Back JK Just Kidding Tnx Thanks BTW By The Way K Okay TY ...