This pandemic must end someday, and on that day, I pledge I will change my 1978 Tom Petty concert T-shirt. Though there have been many health warnings from the CDC about this unhygienic behavior, I pledge I will keep my shirt on until my head is bloodied but unbowed in the face of all alerts. Genghis Khan did not always wear a clean tunic, and he conquered half the world. Alexander the Great’s T-shirt had to get brutally funky under his breastplate. When he started to lose a battle, he could throw his dirty T-shirt into the melee and everyone…