An almost invisible beast that hides in flood-ways usually in the Pilbara Region of Australia. Known to remove skin, clothing, and sometimes teeth from those who are usually intoxicated individuals looking for short-cuts home from parties or pubs.
"Fuck man - the Gully Monster really caned Mick...... broke his nose, wrist and bent his handlebars".
by Dance myth July 5, 2013
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A female located within 20 square miles of MCB Quantico, who typically prey on Marine Corps Officers in the hope of mating and/or marrying.
"Marines, watch out for those Q-Town Gully Monster's this weekend.... it is mating season."
by Call me Dizzle February 21, 2010
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