go bananas

Idioms

Act crazy, as in When it comes to animal rights, some people go bananas. According to the lexicographer J. E. Lighter, this expression may allude to the similar go ape, in that apes and other primates are closely associated with eating bananas. [Slang; second half of 1900s]

Example Sentences

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go bananas

“All the volatility curves kind of inform each other. It’s hard for bond volatility to go bananas and not bleed into equity volatility.”

From MarketWatch ● Mar. 3, 2026

Confession: I don’t always go bananas for depictions of food in art, but April brings a smattering of excellent and tasty shows.

From Seattle Times ● Mar. 19, 2024

Ms. Haley, at long last—are you going to go bananas, or not?

From Slate ● Dec. 15, 2023

Picky eating is one of those challenges that’s practically guaranteed to make parents go bananas.

From Washington Post ● May 31, 2022

“Not to completely go bananas here, but OH MY GOSH!”

From "Witchlings" by Claribel A. Ortega

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

go bananas

Example Sentences

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