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1.
A pseudosophisticated slangism for nasty. Used by the group Shylo
Ooh she did what? that was nastificacious!
by Paradox August 02, 2004
 
2.
an exaggerated way of saying something is sick and wrong.
Taken from the word nasty.
What kinga did on big brother in the bottle incident is an example of a truly NASTIFICACIOUS act.
by Joel_T August 24, 2005