I quite often read threads on here with comments about things children have said at school and I think "If DS said that I would have no way of knowing if it was true". I have always found his perceptions to be different from those around him and had to question other parents or ask for another adult's view. He is improving, but when he was younger we knew things were true if he repeated them in the tone of voice the other person had used, otherwise we were never sure.
People say things like "people with ASD can't lie". Is that your experience?