It is what some crazy girl would say when she thought something was fantastic. She snacked so much that the word snack got stuck in her vocabulary permanently, and everyone thought it sounded bitchin'. So now it is an official word that means fantastic while snacking.

Looks delicious even though not edible.
That man has the most snacktastic abs I have ever seen.

You are one snacktastic babe.
by d00gster7364 March 23, 2010
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