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At some point or another, when it's properly roasting outside, everyone has turned to their mate and said: "I'm absolutely melting."
Well melting things have now become a genuine issue because of the sweltering heat wave currently baking the UK.
Glasgow recorded its hottest temperature since records began on Thursday, peaking at a scorching 31.9C, just 0.3C off Scotland's all-time record in 1893.
Even the buildings were not safe from the rocketing temperatures.
The so-called 'weatherproof' membrane on the roof of Glasgow Science Centre began melting in the merciless heat, sweating out streaks of black goo down the side of the building.
Sharon Lyons, from Glasgow Science Centre, said: "As Scotland enjoys 'taps aff' weather, the weatherproof membrane from our roof is quite literally melting.
"The structural integrity of the roof is completely sound, but we are left with a bit of an unsightly black goo on the roof.
"When we return to typical Glasgow colder climes, we shall set about cleaning it."
The country's infrastructure as a whole was falling victim to the relentless heat, with trains being put on speed restrictions as rail tracks cooked to 49C in central Scotland.
And while you wouldn't expect to see gritters out and about in 30+C temperatures, they had to be deployed because of melting roads in Aberdeenshire, Moray and Fife.
English roads were also feeling the heat, and gritters were also sent out in Cumbria, Lancashire, Doncaster and Hampshire to reports of tyres sticking to the roads.
Authorities are even encouraging drivers to carry soapy water to wash the liquidized road surfaces off their cars.
Met Office spokesman Grahame Madge said: "We are going to see a continuation of the current warm spell but the temperatures over the next few days are not likely to be the warmest of the year so far.
"I think for now temperatures have peaked and we are not expecting to see any records today.
"We will begin to have a slightly fresher feel, bringing the temperatures down, not by much, by one or two degrees."
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