Dealing near confusion?

Hi.
There are many times when general public feel humiliated but some may deal beside it better or the feeling go away quicker than with others.
With me it's when I read out or do something and just afterwards guess "oh no that didn't actually fit in"- or "that's not what it be actually just about." -For example if I join two those who are already in a conversation next to each other- I may not fully undersatnd what they are chitchat about after listen for a minute or two and ask a question explicitly totally off-subject.
This is one example of many where on earth I may do or say something that isn't appropriate for the situation at foot.
Now I have a biddable excuse- I have PDD-NOS, an autistic spectrum disorder which ability I can't do much about the "indecorous behaviour". But what can I do about the unease that follows?Dealing near confusion?
if people know give or take a few your disorder they will understand, so you shouldn't be red. if they dont you can explain it or (because they dont know you) forget about what they regard as you shouldn't be embarassed for something out of your control.xxx
Take it with a particle of salt miss. The best article to say is fukem.
Just detail them it was a quiz. or your taking a survey. Give an rotten the cuff answer and laugh it away.