If I talk to anyone for more than a minute or so, they know there's something "wrong" with me. A new cashier at the grocery store probably doesn't, but the cashier who's seen me a few times probably does. When casual friends or acquaintances find out I'm autistic they usually say something like, "Oh, ok, that's what that is!" or "Yeah, I can see that" or "I thought so." Most people who knew me before I was diagnosed just think I'm unique. "That's just James. That's how James is." Or sometimes they think I'm some kind of incredible genius (I am a genius, but just the regular kind) and that accounts for my oddities. As a kid, I was definitely one of the little professors and I would be just fine teaching the college students, or telling the adults that they were wrong about something and giving them a list of facts detailing why they were wrong (which I did often, but only to inform and educate, not to make myself seem superior).
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You don't need to hide, my friend, for I am just like you.