As a father, I never really understood the thermostat thing... until my kids became teenagers. One of them was cold the other night, so set the thermostat to 75° at 2:00 in the morning.
I woke up sweating my ass off not too long after and finally realized why this has been a running joke for ages.
It's because teenagers are dumb as fuck.
And 42% on Hump Day? Preposterous.