I've seen NTs misinterpreting body language. Before, I was never really told about AS and body language, but since I've seen reading more and more about Autism, I've been carefully observing NT behaviour, and I've captured a few times where NTs have misinterpreted body language through social behaviour.
One of my mum's sisters is, who I consider, a very typical middle-aged NT, who conforms and socialises from instinct. But the other day I've seen that she did miss my mum's non-verbal actions when she was telling my mum about a garden party she went to the other night. She was saying what happened, and who was there, and what everyone did, and even I could see that my mum looked bored and not interested, (because she doesn't know all these people and she's not a party-lover). But her sister didn't seem to notice, and was proudly continuing what she was saying, and I could tell that she didn't realise that my mum was looking bored. And I knew I was right about what my mum was thinking because yesterday her sister got brought up in a conversation, and she said that she felt bored when her sister was gabbling on about this party, and I said, ''yes, I thought you looked bored. How come she didn't notice and I did?'' and my mum said, ''we all miss non-verbal cues sometimes.''
Also, a man who I know came and sat next to me on the bus, and I know that he fancies me, and he doesn't seem to give up or get the message that I'm not interested in someone like him (he's a lot older than me and isn't really the type of man for me.) And before he got up, he went to whisper something in my ear about a man on the bus whom he didn't like, and I thought he was going to kiss me (since he leant right over to me and I wasn't expecting him to whisper something about somebody else), and I kind of stuck my arm out just a little bit as though I was protecting myself, and I suddenly went all stiff and lost eye contact with him, and then he did whisper what he wanted to whisper, then happily said goodbye and went. But then I saw him the next day and he was still the same. He didn't seem to recognise my non-verbal cues that I don't fancy him. He now keeps on asking me out for a drink, and wants to chat me up. I feel bad telling him that I'm not interested. I just take it that NTs guess how you feel by reading your non-verbal cues, but apparently this isn't always necessarily the case.
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Female