What are the subtle signs that reveal you are autistic?

Giving honest answers to questions like "How are you doing?" at the beginnings of conversations.
- Or always giving the generic answer even in situations where it's supposedly obvious to neurotypical people that you're supposed to give the honest answer.

personally? bad eye contact. accidentally using innuendos because there's 80 million of them and I forgot to consider one of them when I was speaking. not catching somebody's meaning when they hid it in an innocuous statement. severe irritability in the cold or around loud continuous noise. overstepping a social boundary and abruptly withdrawing half an hour late when it dawns on me what I did. having no boundaries to other people because I'm trying to be personable and blend in when I don't.
all together that sounds pretty obvious but it never happens all at once. if I've gotten enough sleep then I will mask most of it, whether I want to or not

As a kid I knew something was off (I didn't have the language to call it something) because I couldn't answer T/F and multiple choice questions honestly due to nuance. I often knew the answer the teacher was expecting but to answer it according to that assessment felt intellectually dishonest.
- My psychiatrist has mentioned that it appears like it’s important for me that things are logical.
  But it really started to rub me the wrong way because i know all people including myself are inherently illogical and make mistakes all the time.
  The more accurate terminology i recently found is “intellectual integrity”. “Intellectual dishonesty” fits very well as a related term.

People around you earnestly tell you that you are autistic
- Conversely, you telling other people around you that you are autistic, and them ignoring this or pulling other diagnoses out of their asses.
  You would think this would be as direct as you could possibly be, but nope, in reality, its subtle, because everyone else has their own explanation, and their own understanding of what autism is / how it presents, so what you actually have to do is read their fucking mind and then act a bit more like their idea of autism, and then they'll agree with you.
  By which I of course mean they agree with themselves and you just cooperate with that.

Subtle?
I think Autistic people in general realize something is off. The key is realizing they aren't necessarily unique.
- I actually found this quite hard when I first looked into ASD. It felt like a list of all the things that I thought made me unique but were just autistic traits.

Most people can’t tell is autism, unless they’re regularly close to other autistic people. They just think I’m weird.
But even then I would say physicality. Posture and way of looking or walking.