all brawn and no brain

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all brawn and no brain

Having great power or physical strength but lacking mental acuity or intelligence. He may have been a good football player in high school, but he was all brawn and no brains, so he didn't get into any colleges.
See also: all, and, brain, brawn
References in periodicals archive ?
JEAN-Claude Van Damme proved he is all brawn and no brains at the awards ceremony.