It might just be anxiety. I know people who’ve done that too. Pinching his cheeks is probably a sign of stress. Does he go to public school? If so that might be part of the problem.
Wrong again, and no he doesn’t go to public school. Does he look like he has anxiety? https://www.facebook.com/KristineVarkony/videos/vb.904810472905112/1085624211490403/?type=2&theater
Good news RW, you aren’t an Aspie. Thought you might like to know it’s all in your head.