Then that must be me. When I was in junior high there were 2 boys in one of my classes that would count how many faces I made during one period. This was years and years before I started losing my hearing.
It's not just inflection, something you can hear. You can usually see, visually, emotions on people faces when they're talking. Is everyone so focused on reading lips that you don't see it? If someone is exasperated, happy, amused, sad, smug, embarrassed and on and on, you're going to be able to see it on their faces whether they're using English Spanish Spanglish or ASL. That's what I don't get. People, all people, no matter the language they are using, communicate with more than just words.