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2.
A person that talks in slang in the right place, time, person etc. Most of these people can handle a conversation at ease.
" The Bo$$ is a slanguistic mack daddy"
by The Bo$$ March 15, 2005
 
1.
The linguistics of slang. Origin of this taboo term is unknown. Commonly used to describe rapper E-40's slang, who is the self proclaimed "King of Slaguistics". The Bay area rapper E-40 was known to have released a book,
"E-40's book of slang" Translating much known slanguistics, and even his own slang into commonly known english terms.
Person 1: That bitch glazed me like a donut.

Person 2: What the fucks that mean?

Person 1: Bitch, Im slanguistic.
by Jdatkidd September 11, 2006