When using headphones outside the long cord can become a bit unwieldy and not very fashionable. You could hide it completely inside your coat, but that is impractical for several reasons, for example you can’t have your phone/player in the outside pocket. I propose a better alternative, just hide it behind your buttons. Putting it the cord halfway inside your coat and just butting it up so that the buttons hold the headphone cord in place.
Behold my glorious MS paint artwork!