I actually came up with this thread the other day at a Thai restaurant and then the yawning thread set me to writing it.
At the Thai restarant I saw a well behaved ten year old girl get in over her head with some Thai seasoning, probably galanga or something along those lines.
Anyway she did the classic "three more chews", eyes squinted shut, each time the mouth closing a little wider open than the last time, then the tongue pushes the contents out.
What do they call that? Why an average of three more chews in most cases?
Then there is the tilting the head to one side when confronted by something novel.
A suprising amount of creatures do it. I was told it had to do with focusing the proper hemisphere of the brain. I refute that explaination because even creatures not built on that architecture do that. Jumping spiders, for instance. Mantids for another. Mantis shrimp for another.
Jumping spiders don't even have necks! They have to tip their bodies to do it!
Why do people make bunny hands when they sleep?
Some things I have learned the why of, but still don't know the name. When somebody is stressed and hugging one arm around themselves, usually while touching their own face with the other arm, it's a signal they want somebody to hug *them*. Saw it in a film where anthropologists set up cameras at a large amusment park. Specifically, at the park's lost and found for children. Pretty good place to find adults stressed out more than ethics would allow in normal human experiments. (I would hope.)
"We've stolen your children ma'am. Can you tell us how that makes you feel?"
Once I learned that bit I've have put it to very good use several times over the decades since then. People do in fact want to be hugged when you see them like that, in most cases.
(Don't laugh, but I studied anthropology to be a better D&D refferee.)
and THEN there's all the little consistant oddities that occur during human procreation, and the lead up to it, I'd like to ask about, depending on how serious the replies are.