Before you put on your next shirt, why not question the ordinary? At the rear of your shirt, where the yoke is met by the pleat, there might be a little loop. Ever notice?
That’s known as a locker loop, and it’s is an extra fabric ring on the high center back on shirts. Usually found where the pleat meets the yoke. All the original Brooks Brothers oxford button downs had this feature, which became a basic in the Ivy League style. The purpose was to hang your shirt, in a locker, by the loop so that it wouldn’t wrinkle.
They served another more commonly known purpose. They were called fruit loops, and teenage girls enjoyed ripping them off boys’ shirts, the more tightly stitched loops sometimes taking a strip of shirt with them.