No, It Doesn't Make You Look Fat

Of course, if you had to pick truth vs lies, we know
which one is better (National Autism Resources)

People with autism-spectrum disorder (ASD) [bold added]

indeed have a hard time being untruthful.

This is caused, [Duke professor Murali Doraiswamy) added, by the trouble they have with what specialists in the field call “theory of mind”—that is, the basic ability to put ourselves in somebody else’s shoes and empathize with their perspective. Most of us are able to ask ourselves, “How would that person feel if I told them that their haircut is unflattering or that they smell?” Many young people with Asperger’s don’t tend to think this way, so they often don’t develop the habit of telling white lies for reasons of politeness. They don’t learn to dial down unnecessarily hurtful truths to spare another person’s feelings.

We know a number of ASD children and adults, and they do find it difficult to lie. (The more socially adept change the subject or keep silent.) However, it's been our experience that it's not their excessive truthfulness that gets them into trouble but their physical reactions---not necessarily violent---in social situations.

It's no wonder that ASD kids 1) Like computers, video games, and other screen-based media, yet 2) Stay away from social forms of the technology.