Hi, I haven't written a post in along time but thought this might be helpfull to those with children with ASD.
Recently I informed my DS(7) that he had Autism using a simple book called 'Ians Walk' the main thread described most of the behaviour as thinking/doing things different. Much of it my DS has grown out of and doesn't remember doing but once we hit the hand flapping page. He instantly recognised the behaviour and I happened to ask 'why' not really expecting an answer. But to my amazement he launched into a full demo with explanation of all the various hand flaps! One was from the cartoon Sonic (which he loves) basically very fast hand rolling which was for 'electricity' (speeding up), there was flapping round the ears (smoke coming out) which indicated angry and another, one flap one hand with a stamp then the other side was keep away!
I found the whole thing fascinating and really didn't know he was that capable of explaining his actions. But then I rarely ask and just accept the behaviour alot of the time passing it off as typical ASD behaviour.
I hope this proves insightful