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A common term used to identify something casually pleasant.
Check out my sicky new Duran Duran poster.
by Schuyler August 09, 2003
a term to describe someone who is either ugly, stupid, has an STD, hooked up with one of the aforementioned or is lacking in any other department.
You slept with that ugly girl? You're such a sicky!
by Michael Roch May 25, 2007