I've often been told by friends that they can spot me from a distance by the way I walk. I bob up and down and from side to side a lot, and put most of the weight on my toes (I have always been a tip-toe walker when stimming.) My arms often don't swing in sync with my legs, either, as I seem to have learned to walk without swinging them at all - I can walk equally fast holding bags of shopping as without (and I always walk very briskly.) I thank my lucky stars that I have never been injured in a road accident when walking, as I get into a bit of a trance once moving, so my situational awareness can be terrible. When people have commented on it, I have often joked with them that I have "clockwork legs" like a wind-up toy.
When I was younger, I was in a marching band for a little while, and I used to drive the drill instructor mad. He would get one of the other boys to demonstrate, and when I did it, I was certain that I was doing exactly the same as them. But no, it was never what he was looking for (this was long before most people had a gadget in their pocket that could take videos - thankfully!) I could march in time, and followed the commands OK, so it must have been my posture and/or gait that were the problem.
Interestingly, my Mum tells me that my walk is identical to my Uncle - her younger brother. I saw him very rarely, and only at family gatherings indoors, so I doubt that I could have copied him. The way that my Mum describes him, I've wondered if he might also be an Aspie.
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When you are fighting an invisible monster, first throw a bucket of paint over it.