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To be the best of something that there is. To be great and extremely, utterly wonderful. Not just fantastic, not just fantastical, but fanfuckingtastical. The epitome of fantasticness. It can also be used in a sarcastic manner.
This is the most fanfuckingtastical day of my life!
Sarcastic example: Oh that's just fanfuckingtastical, I'm late to work, haven't eaten breakfast and my tire is flat. Fanfuckingtastical!
by Aryn Bliss April 19, 2007
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