Squeaker Squeak, Squeak Squeakin

"Did I tell you about my squeaky shoes?!" Oh, this is going to be good I can tell! Today Tella was walking through the library when the peaceful silence made her painfully aware that her shoes squeak. In fact she was walking behind a guy who turned around to give the culprits the stink eye. She then proceeded to walk faster - louder, but over quicker. Wondering about this unfortunate experience we decided to examine the footwear and see what might be the problem. They seemed just fine in our hands, leading Nutella to the biggest thing since E=mc²: "shoe + my foot = squeak!"