Wild animal who has a highly tuned sense of smell that is dedicated to the scent of the human butt. The butt beast feeds solely on the human butt, and generally lives alone, but sometimes hunts in packs of 10 to 20 other butt beats. Normally one butt beast can bring down a full grown human, but some humans are just plain fat and this is when the butt beasts will work together.
Butt beasts enter a feeding frenzy when feeding or hunting butt, this is similar to the feeding frenzy that sharks experience.
The only know enemy of the butt beast is an Alicia, the Alicia is a striped animal that also loves human butt. The Alica and the butt beast sometimes have territorial battles to the death.
guy1- "dude did you hear that?"
guy2- "what?"

Guy1- "I heard a fart noise, did you fart?"
Guy2- "no I did not fart"

Guy1- "oh no!"
Guy2- "what?"

Guy1- "run! a butt beast is following us!"
by scuba yetty March 9, 2009
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Someone who is more that just a butt, they are big poop heads.
You are such a butt savage beast!
by Topher P February 26, 2005
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