Here's a truth: there's no "normal." Everything is relative - we hear that all the time. My normal is different than your normal, which is different than his normal which is different from her normal. So, just because someone's behavior isn't "normal" to your lifestyle doesn't mean that it's not acceptable in general. The autism spectrum is broad; therefore, offering numerous amounts of "normals" in this world. I saw the spectrum of "normal" appear in an encounter at the grocery store that happens too frequently to not be brought to attention.