I have, on rare occasion, used my disabled child as an excuse to get out of social functions I seriously didn't want to attend. "Ooh, I'd love to, but it would be too overwhelming for my son" and all that. I feel guilty as hell doing it, because it cheapens his condition, but it also gives me a sense of evil pleasure. When he was younger and still non-verbal I could even get away with leaving boring functions early by claiming that I could see Son was close to a meltdown when he was, in fact, doing just fine. As his meltdowns at the time were, shall we say, quite epic, people were more than happy for me to leave with Son, even if he seemed content.