Functions of Slang
Slang allows a person to become creative in the use of language. Some people use slang in order to communicate with each other informally. Similarly, people using slang are able to identify other members of their subculture easily.
There is a special Slang Dictionary which contains such words and their meanings. When a new word is created in the slang language and a majority of people start using it, then it is added into the language. If it does not gain enough popularity, it is forgotten.
One of the reasons slang is around is that people believe that by using slang they will be able to set themselves apart from others and be unique. However, others believe that this is an improper way of speaking or writing and strongly criticize its use. Children who use slang while speaking end up using it while writing in school, which is discouraged in the academic world