A Highbrow (n.) does not understand everything he knows.
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A Highbrow (n.) can use the word whom without feeling self-conscious.
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A Highbrow (n.) checks a book out of the library that no one else has checked out in years.
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A Highbrow (n.) talks to you about things he doesn't understand but expects you to.
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A Highbrow (n.) is someone with plenty of knowledge but not enough wisdom to conceal it.