Us, being good sports, told him it was useless because that water would also freeze making the view even more difficult, much less even harder to scrape off.
Obviously we were baiting him. We all shared a look towards each other that said "Holy crap, we might see something awesome, no one screw this up."
He took the bait. Boiled up a monstrous pot of water. We cleared the dorm hallways for him so he could get out to his vehicle as fast as possible.
Spider web cracks covered 100% of his windshield. Needed rides for weeks, which we refused. Didn't have glass coverage. Flawless victory.
Minnesota nice is a myth.