It predates the Victorians by some centuries, in fact!

You can just say “a group of X called a Y” about anything and people on the internet will believe it.

Sir, this is a joke about how it would be awful if the sun were always up.

But also, the UK just had its second warmest June ever (England’s warmest ever) and was over 30C in many places. During these heatwaves, the temperature rises rapidly, making it uncomfortable because people are not used to the warmer temperatures. After 7 days of warm temperatures, people get used to it.