Top Definition
1. Sluttish or shared by many, oral, penetratable

2. Unrestrained, willing, limitless, sintastic desires.

3. Bizarre, as in act of sex; devient: sintastic attire; sintastic behavior.

4. Based on or existing only in fantasy; unreal: sintastic actions for others pleasure.

5. Wonderful or superb; remarkable: a sinntastic trip to Sherryland.
I met this girl last night... She was sintastic!

That sex was sintastic!
by Harry Scott June 16, 2007
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