Found over on Reddit.
Q: What were (in retrospect) the weirdest trends at your school?
A: Leaving your t-bar school shoes unbuckled.
Enter someone not familiar with t-bars.
A: Shoes like this. Schools in Australia have uniforms, including black, enclosed shoes. For a while among the girls at my school it was popular to get shoes in this style but never actually buckle them up. Just…leave them undone.