Aspergers gets no respect. It really isn't taken seriously. Especially now that it's part of pop culture and people are almost envious of it, with no knowledge of how it's an actual disability. Autism is. But don't say you're on the spectrum, because then the response will be "everyone's a little on the spectrum."
I disclose I am autistic at the earliest opportunity without any explanation and then suss out what that person knows and then make corrections from there. But the problem is, regardless of what they think they know, their knowledge is typically only academic. So they might be mentally aware that you might say something wrong/odd, but when it actually happens it won't register and they'll still get pissed off. If they're good people, they'll circle back. If they're not worth your time, they will find a way out.
Ideally it would be great to have the presence of mind to highlight every time you were having an Aspie moment so they can witness what it is in real time. But, being an Aspie, that may take a few hours, days, or years to figure out.