Yes. Often is it just saying the words 'mental illness' or 'autism' aloud. Other times somewhat more extreme. I often do it around people, don't mean to, but if I'm reading something while listening to my ipod and forget others are around...
_________________
'An ideal of total self-sufficiency. That secret smile may be the Buddha's but it is monstrous seen on a baby's face. To conquer craving is indeed to conquer pain, but humanity goes with it. That my autistic daughter wanted nothing was worst of all.' Park