In accordance to my mental/physical capability, I will have to give you an answer along the lines of "I cannot do something" due to me not being able/wanting to do the objective that you have tasked me with.
NO; I WOULD PREFER TO NOT; I AM SORRY, BUT I CAN’T PERFORM THE ACTION OF SAYING YES; MY BRAIN IS INCAPABLE OF ACCEPTING THIS PROPOSITION, MEANING I WILL SAY THE CONTRARY OF YES IN ORDER TO ESCAPE THIS SITUATION BECAUSE I OBVIOUSLY DON’T WANT TO DO IT.