Dave's Classroom is Full of Hot Air (and Wasps)

At school on Tuesday, I noticed that although my portable A/C unit was running and though it was kicking out some cool air, my room was still uncomfortably hot and humid and I was NOT happy about this-- I played 6:30 AM basketball that morning and even though I showered, I was starting to sweat again-- and what really bothered me was that this little A/C unit had managed to cool the room down during the REALLY hot days last week-- so what he fuck was going on?-- and then, to add insult to injury, the last period of the day, large wasps started invading my room-- I climbed up on the window ledge and killed one by swatting it with a folder and the kids applauded, as they always do, but then two more wasps showed up and I had to climb up on the ledge AGAIN and kill them-- one wasp perched on a window frame behind the blind and I just whacked the blind with my folder, which decapitated the wasp, and I was able to kill the other one when it landed on a light fixture, but this was getting old-- I had to teach some college essay stuff that the kids actually needed to know-- but after I killed the third wasp, from my unusual perspective above the A/C unit, I noticed the duct that kicked out the hot air that the unit produced (that's the 2nd law of thermodynamics, perhaps?) had disconnected from the window seal, so the hot air that was supposed to vent outside was instead being blown back into my room-- mystery solved!-- that's what was causing the room to be so hot-- despite the fact that the A/C was running an producing cold air . . . because it was producing a greater amount of hot air, but that air was supposed to be vented outthe window, where it could contribute to global warming; I was annoyed that I didn't notice this earlier-- but when you're simultaneously teaching and killing wasps, it's hard to focus on other things-- and to this point, earlier in the day, none of us noticed a giant pile of broken safety glass in the corner of the English Office, scattered on the floor and low shelf-- perhaps this was a glass from a refrigerator shelf, from one of the confiscated refrigerators? who knows?-- we told the main office and went on with the day; anyway, I brought in some duct tape and sealed the vents permanently so that this won't happen again and I'm hoping that the open vent hole was how the wasps entered my room (but I doubt it).