Every one of us had a textbook growing up that inspired intense double-takes. How did these covers make it past the publishers and the school board, and into the hands of impressionable children? Whether they're accidentally ridiculous or existentially frightening, those books demanded that you wrap them in a brown paper bag stat.

Relive the days of your youth (which are gone) and fear for future generations with these 25 unsettling textbook covers.

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Written by Brenden Gallagher (@muddycreekU)

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