Also no one above mentioned this, but the main part of a Spur is a round star shaped object that is spinable, kind like a ring on your finger. And when you walk they freely move like a watch on your wrist if you wiggle your arm. and this action makes them Cling/dance/bounce/chime if two pieces of metal hit eachother it makes a noise, the metal on metal noise that spurs make is kind of jingling or bell like.
Thus Spurs Jingle as you walk.