I bought a box with 100 t-shirts in the same colour do I don’t have to choose

The Mr. Bean/Monk/Matlock/Peter Griffin approach.
He ages at half the speed of regular humans.
the first image is the year his girlfriend was born
Plot twist: It‘s always the same shirt.
Leading to my favorite conspiracy theory, that his shirt choice is really a subtle viral marketing campaign. I call this theory “Tom Scott is in the pocket of Big Red Shirt”.