A quote.

Still sick, so just going to throw a quote up.  This excerpt would make me laugh if it didn't make me want to cry.

Indeed, for children with certain kinds of developmental disabilities, the inability to lie can be viewed as a symptom of the disorder. The best example is children with autism, a profound disability in which children exhibit language difficulties and such social deficits as the ability to respond to others' emotions.

Parents of children with autism often report that their children are simply incapable of lying. While at first glance unrelenting honesty might be seen as a virtue, in fact it is at the heart of the social difficulties children with autism experience. For instance, playing children's games becomes an impossibility if the games require children to engage in pretend play. Children with autism are thought to lack a theory of mind allowing them to understand that others have their own perspectives and emotions. In order for a child with autism to lie, they have to understand that two different perspectives are possible simultaneously: the true one ("I broke the lamp") and a false one ("Someone else broke it"). Not only are children with autism unable to imagine that false perspective, but they may be unable to understand that the perspective that others hold is different from their own. The inability to understand that multiple perspectives exist makes them feel that what's in their own mind ("I broke the lamp") is apparent to everyone else.

Consider the irony of the situation. Honesty in children with autism is viewed as a manifestation of their disorder. Subsequently, autistic children who were originally unfailingly honest but have begun to show signs of lying effectively are considered to be showing improvement in their condition.

From The Liar in you Life: The Way to Truthful Relationships.

So basically, autistics assume that you're smart enough to see through bullshit and so don't bother trying. Consider the irony of the situation? I think I'd rather not.

This reminds me of an incident that happened at a restaurant I was working at a couple of years ago.  It had been a slow night and I was breaking the place down with a coworker.  I noticed that a certain container was about half as full as it had been a few moments before.  Saw that the contents that had been in it was now splattered on a shelf to the side.  I mentioned it to my coworker.  Asked him when he'd spilled it.  He sat and denied that he'd had anything to do with it.  Said that it had been that empty the whole time.  I pointed out the mess that he'd missed, noted that there had only been the two of us in the restaurant for at least an hour, and said that I really didn't give a damn one way or the other.  It wasn't me, so that pretty much leaves you, I said.

Took him a good 5-10 minutes to drop the pretense.