When I get clocked as autistic I activate a defense mechanism where I play into the stereotype and pretend to be a hyper intelligent child in a 30 year old's body.
This surprisingly works because I'm a woman (meaning society is infantalizing me anyway) and most of my hobbies are childish things like Sonic and Yu-Gi-Oh so it does allow me to indulge in them in public without fear.
So people just tend to think I'm adorable for some reason.
Sadly I couldn't even stop doing that if I wanted to. I kinda do because I hate being stereotyped and I know I'm not doing other autistic people any favors... but... I swear it's not even voluntary it's like a weird reflex.
I even do this softer less intimidating voice that creeps my boyfriend out. Honestly I think I have another personality that's just younger than my main one or something.