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Rawrness comes from the creature Rawr. If you don't know who Rawr is, this is him. ("\(O.o)/"). Rawrness is often used as a adjective, meaning "sexy" or "hot" also "hawt". It can also be used as a noun.
"You are not worthy of the Rawrness!"

"Rawrness.. He's hawt!"
by Ashley April 04, 2005
Awesome with a touch of SWAG and Unicorns.♥
That bag is rawrness
by ImJustinsBarbie August 10, 2011