crazy like a fox
Seemingly foolish but actually very shrewd and cunning. For example, You think Bob was crazy to turn it down? He's crazy like a fox, because they've now doubled their offer. This usage gained currency when humorist S.J. Perelman used it as the title of a book (1944). [Early 1900s] .
Words nearby crazy like a fox
crazy bone,
crazy eights,
crazy golf,
crazy horse,
crazy house,
crazy like a fox,
crazy paving,
crazy quilt,
crazy top,
crazyweed,
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