Top definition
A slow witted Texan who enjoys the delicacy of eating the feces of other creatures.
With blatant disregard to his health, the rockjaw feasted upon the freshly laid pile of dung provided by a longhorn. All the while he thought it was liver pate.
by Brooster April 16, 2010
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2
The pain in your jaw after spending a long period of time singing along to your favorite rock songs
Jim: hey dude whats up your chewing your food funny

Jack: oh man i just got rockjaw
by seafo90 October 17, 2009
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