You would find yourself puzzled and not knowing what to do for 2 or even 5 seconds (which is an eternity in a real fight), but most significantly you would find yourself placed in the most unconvenient positions (almost squarely frontal to your adversary, fully exposed to his punches from both arms, at close quarters which enhances the impact of his hits enormously and the amount of severe damage they can do, and with an arm of yours unusable, namely the one that you placed on his neck to find only right then and for the first time that he, simply, does not bend in the least).