Top Definition
1. A beast person eating a pistachio.

2. An adjective to describe something beyond awesome.

The opposite of bullockstachio.
1. Hey check out that beastachio, John is eating a pistachio!
2. COD 8 is out??? That is so BEASTACHIO!!!!!11!!!111!!!
by barackobama1138thx April 03, 2011

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