Weird shaking of hands, signs with finger ( sometimes they mean "hello", sometimes "fuck you", and they don't mean the same thing everywhere ( also NEVER SAY HELLO WITH YOUR VOICE UNLESS YOU'RE LOOKING FOR TROUBLE )), they also get mad at stupid random things such as when you look at things for instance or when they think you're not polite enough even if you're respecting the most basic social convention ... I don't really relate with their human experience tbh. Where I was raised saying "hello" and not annoying people with random bullshit was considered not being rude enough. But apparently it's not the same for everyone.
