Top Definition
something crazy, awsome, unpredictable, unimaginable, the best ever.
This girl walked by, and I turned around and she had a sicnasty behind.
by Shadood June 08, 2007
Meaning sic as in rad or awsome nasty meaning the same,
so sic-nasty awsome!
ok so lets say ur friend just told u she bought tikets for this rad concert u wanted to go 2 then u would say tnx this is so fkin sic-nasty!
by Dannie Koutore !remeber me! April 19, 2008

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