Top Definition
A Roman Warrior living in modern times. Ryannas often ride their mother's bike to collect tasty YooHoo treats that often give them explosive diarrhea. It is Turkish folklore that if a Huntavos and a Ryanna come into contact, the world can end in the time it takes to watch an episode of Full House.
I was cleaning the bathroom the other day and found the remains of a Ryanna Durham.
by Joshua P. Oleander May 03, 2011

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