Definition of midsummer madness in English:
Foolish or reckless behaviour, considered to be at its height at midsummer.
- The emergence of the Notting Hill Set last week sparked brusque denunciations of these upstarts by the old guard, leading to accusations of a return to the party's usual midsummer madness.
- Scott was described as suffering from ‘an attack of midsummer madness.’
- Is midsummer madness giving you a wee persecution complex?