Communication Breakdown

I do not understand what is wrong with the people around me. I speak in a language that should be both universal and easily comprehended by all. My body movements match my speech and clearly exemplify the point that I am trying to get across. There is no excuse whatsoever for anyone who cannot easily and intrinsically understand what I am saying. And yet, no one seems to. All they do is coo, smile, make funny sounds, and stand there looking at me as if they themselves have never once attempted to communicate with another living creature and therefore could not be expected to even chance a guess as to what it is that I am saying. It is extraordinarily frustrating.