I fit pretty much all of those, minus the large head and erection (given that I'm, well, female). My family always freaks out at how far back I can bend my fingers, and I can bend my thumbs so that the top joint is at a 90 degree angle to the bottom joint without bending them manually with my other hand. I can also bend my wrist so that my thumb touches the inside of my arm, which I've heard is unusual.
Despite being 24, when people meet me, they invariably guess that I'm around 12-14. When I was 21, I went to the store to buy pepper spray and the cashier said, "You have to be at least 16 to buy this, do you have a parent with you?" as if I looked so young there was no way she could possibly be mistaken that I was a child.
I have a lifelong hunched, loping gait as well. My dad tried to correct it by sending me to rolphing sessions (which are a combination of physical therapy and really deep pressure massage) but as soon as the course of treatment was over (there were ten sessions in all) I almost immediately went straight back to my hunchbacked position.
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"Survival is insufficient" - Seven of Nine
Diagnosed with ASD level 1 on the 10th of April, 2014
Rediagnosed with ASD level 2 on the 4th of May, 2019
Thanks to Olympiadis for my fantastic avatar!