Why jk shoes are called pork loin shoes

Jk shoes, which usually refer to the shoes that accompany the uniforms worn by Japanese girls' high school students, are characterized by a rounded toe and a small, delicate buckle design, and are usually paired with Japanese jk uniforms or various lo skirts. The reason why they are called pork loin shoes is because the outline of these shoes is similar to that of a pork loin. Both the head and tail of the shoes have a rounded curve, while the center part shows a clear depression, which is very similar to the shape of the pig's waist, so it is figuratively called "pig waist shoes".