Heat in the kitchen

It was one of the first hot days here with temperatures in at least the middle 80's. This morning he tried to adjust the inside temperature by messing with the thermostat maybe not realizing there is no central air conditioning in this house. We went out for breakfast. We took a trip to Lowe's to purchase a fan for his bedroom and a hummingbird feeder. When we returned, it felt much hotter in the house than it was outside in the sun. What gives? I took a look at the thermostat. The needle was pegged at 90 degrees - the absolute maximum end of the scale. The actual indoor temperature was probably hotter. The furnace was blasting (with heating oil at about 5 bucks a gallon and the tank now probably empty). What the hell did you do? He wilted. He'd been trying to turn it down and instead turned it up as high as it would go. He was ashamed. He sheepishly went to work on bis Biology homework while I, sweating, attacked the dishes in the kitchen sink, put the new feeder together and mixed a batch of sugar-water while mutterring to myself. The hummingbird showed up about an hour after I stuck the feeder on the kitchen window. That's about how long it took me to make the thermostat incident into a joke. And then we moved on.