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

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

From The Guardian • Jul. 10, 2015

The full force of the midsummer madness struck Western Europe last week.

From Time Magazine Archive

Referring directly to Lord Cecil's appeal, Chancellor Chamberlain declared, "That is very midsummer madness!"

From Time Magazine Archive

A spitter is a freak in a regular tempest—a midsummer madness of weather upheaval.

From Blow The Man Down A Romance Of The Coast - 1916 by Day, Holman

I should be ashamed to repeat the nonsense that Tubal Cain thereupon began to talk; for it was mere midsummer madness.

From Noughts and Crosses Stories, Studies and Sketches by Quiller-Couch, Arthur Thomas, Sir