be (as) nutty as a fruitcake

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be (as) nutty as a fruitcake

slang To be crazy or wacky. Usually used humorously. Don't listen to a word he says, he's as nutty as a fruitcake! You're nutty as a fruitcake if you think that plan will work.
See also: fruitcake, nutty
References in periodicals archive ?
I've been working in this business for years and there's no way you can do that and not be as nutty as a fruitcake" - Actress Jodie Foster.
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