[PIF]

using ‘based’ in context (”A Manifesto for the Based”, “The Declaration of Independence was based as hell and still is”) makes no sense, but ‘biased’ does; rather, his spell checker changed the word and it was not caught due to poor editing. Else like you said he uses an awkward word that does not really fit English sentence construction.

[clarissaexplainsitall]

“based” is correct. i thought it was coined on Reddit in a very funny group that has since been banned.

[Trailerpark Badass]

English is, and always has been, full of neologisms. Just because you don't know the meaning of one, doesn't mean it won't become part of the lexicon. Everyone under 40 knows what based means.