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go berserk

Erupt in furious rage, become crazily violent. For example, When they announced the gymnast's score, her coach went berserk. This expression is believed to allude to the name of Norse warriors renowned for their ferocity in battle and for wearing no armor but a bearskin shirt (or berserkar). [ Late 1800s ]
Also see: go ape
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Examples from the Web for go berserk
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  • Take away their fracases and their trank pills and they'd go berserk.

    Mercenary Dallas McCord Reynolds
  • Anyhow, the way things were going, we'd all go berserk before we reached Saturn.

    Let'em Breathe Space Lester del Rey
  • Any moment now, they might go berserk, turning their course fatally toward the Sun.

    The Impossible Voyage Home Floyd L. Wallace
  • If there is anything to stir the blood of a man like a destroyer beginning to see red and go berserk, I have yet to encounter it.

    Sea-Hounds Lewis R. Freeman

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