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Noun, Proper: adj. A creepy guy, usually identified by a third party, typically found in large crowds, who consistently gets caught staring at a person for an extended period of time.
I found Cornhead in the gym this afternoon, staring at the sweaty basketball players again.

"Stop giving her that cornhead stare man! It's creeping her out."
by JudgeFudge February 09, 2012
cornhead is a crack rock that is yellow in color.also meaning a crackhead.
"thats a kickass cornhead"
"your'e such a cornhead"
by andy March 05, 2005