Often meaning the person is stubborn and stupid at the same time. They have an idea that is easily proved wrong but they refuse to let you.
My friend is so thick headed, he swears that all arabs are out to hurt someone.
by ciper July 20, 2005
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used to call someone “stupid/dumb
are you thick?”

i know, i’m not thick in the head”
by noufirst June 4, 2018
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are you thick?”
no i wouldn’t do that! i’m not thick in the head.”
by noufirst June 4, 2018
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