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

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

And if the worst comes to the worst, you can always pass it off as midsummer madness.

From The Guardian

Produced with involvement from the 28 embassies of the European Union, the festival will feature, among other offerings, Hungarian dance; the Estonian show “Aha! Fun with Science!” the animated movie “Moomin and Midsummer Madness,” based on Finnish author Tove Jansson’s series about a troll family; and the British conservation lecture-and-comedy-routine “The Ugly Animal Roadshow.”

From Washington Post