I just cannot believe there are so many rude people out there. It'd never even occur to me to ask or suggest to anyone if their child has a particular condition.
One of my DD's toddler classmates was a classic case (early reading & spelling but read with completely flat tone and showed no emotions, no eye contact with anyone including with mom, showed no interest in peers or adults, had a very peculiar gait and body language, etc, etc) but I felt so guilty even thinking this and tried everything in my power to relate to this child as she is rather than a (possible) label.