All you have to do is watch my feet and the shoe balanced on it. Easy, right? You have complete control of your cock, don't you? If you can't maintain control, it will cost you. So watch and enjoy the shoe barely hanging onto my foot, swaying with each stroke of your cock. Simple. You can last. You can keep that cock of yours from blowing until the end. If not, there were be a penalty, financially of course. Did I mention that you have to last through both feet? Will your cock blow before the second shoe falls?