midsummer madness

American  

noun

1. a temporary lapse into foolishness, senseless behavior, folly, etc., especially during the summer.

   His plan to become a beachcomber is midsummer madness.

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midsummer madness British  

noun

1. foolish or extravagant behaviour, supposed to occur during the summer

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Etymology

Origin of midsummer madness

First recorded in 1595–1605

Example Sentences

Freeman warned that “instability will fuel a febrile moment of midsummer madness,” as Johnson hangs on and candidates campaign.

From Washington Post

George Freeman, who quit as science minister on Thursday, said he worried about a leadership election being held in “a febrile moment of midsummer madness, where we choose the wrong person in a hurry because of the instability.”

From Seattle Times

If Westminster’s midsummer madness does lead to a car crash, so be it.

From The Guardian

But there’s method in Ms. Coonrod’s midsummer madness.

From New York Times

If a seeming midsummer madness has taken hold of the campaign, there's a method to it: Next week brings the first debate of the Republican primary season, and only the top 10 candidates, chosen by poll rankings, get to take part.

From Los Angeles Times