It think it means ...
"could you say things that are considered socially inappropriate when you are not thinking."
Quote:
I nearly always check myself and know not to say my thoughts out loud.
And if you didn't then you would be "acting naturally" in the sense of that particular question.
So
Quote:
"Do you tend to say things that are considered socially inappropriate when you are tired, frustrated or when you act naturally?"
should be interpreted as
Quote:
"Would you say things that are considered socially inappropriate if you were not to consciously check yourself and think about the consequences your thoughts out loud
I think most NTs as well as Aspies would result in socially inappropriate comments.
So, my conclusion: The test had a badly-worded question.
Maybe they are trying to probe the sense social awareness and reciprocity , or lack of it, in order to score an aspie point.