so can I! (the foot thing) why can we do it?
I can.
All but my right pinky will do that. I have met a few other who can do it also. I cal also do weird things with my shoulder blades and stomach muscles. I think it is just muscle control.
Nope, but I have hypermobile thumbs; photo in this Wiki article.
I can also clap one hand like this guy. never met another person who can.
No, but I can bend the proximal joint of any finger without bending the distal (last) joint. I only know one other person who can do that, and she is also Aspergers.
I can also do the one-hand-clapping ^^^, but I haven’t practiced enough to do it really well.
Now you’ve met another. I didn’t know that it was anything unusual.
Not a single danged finger. Not unless I physically hold my finger straight with my other hand.