Body Language

I have been in the agility world for over two years now, and owned my first dog for two and a half years. I have learned and am learning still, the skill of reading body language. I often have a lot of other people asking me how I can tell that they are aggitated when others can't tell in the slightest. I have started to use animal body language with people... of course it typically gives them NO sense what I am trying to tell them, the other day, for example, I was in a mall, and I was sitting on a bench that had four cushions on it. I was sitting there, waiting for my mom who was in a store, and there was no one else sitting on it with me, Suddenly a random stranger came and sat down next to me, when I say next to me, I mean RIGHT next to me. then she picked up her phone and started talking on it, all the while leaning closer to me. First, I tried looking away, I looked completely in the other direction, I moved as far a I could to the arm rest, I yawned, licked my lips... then realized that that has no meaning AT ALL for people. So I stood up and quickly hurried away, and the woman stared at me like I was crazy, but I kept scurrying along the hall. Even in school, when I feel challenged or threatened by someone, I will do that same thing, slowly lick my lips, at first I will hold eye contact, and challenge them back, but as soon as I feel that having no effect, I look away. You know how dogs look away like that, turn thier heads away, but still look at you out the corner of thier eyes, yeah, that's what I do... Basically, I learned all these things from training Shiloh and having to learn to read those little body signals, even in people. Anyways... I suck at concluding...