A term used to describe someone not all there who reminds you of a caveman.
Man, Craig's such a rock muncher!
by Coldhandluke August 29, 2017
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An unintelligent person who proverbially "munches rocks". Often a political science major. A rock muncher may try to disguise their rock munching by doing non-rock munching things, such as double majoring - however, do not let this fool you, they ARE a rock muncher.
person a: "Did you know that Josh is a political science major? I didn't realize he was a rock muncher."
person b: "I know, and he tries to hide it by double majoring in computer science..."
by williamwallace1234 February 1, 2022
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