Exploring. Such as trying something new or talking to strangers!
That's kind of the same as disregarding embarrassment - happier people are braver, so they do more of anything they are shy about or afraid of.
I want to help design a "sandpark" MMO. Optional interactive story with quests and deeply characterized NPCs, plus sandbox elements like player-craftable housing and lots of other crafting. If you are starting a design of this type, please PM me. I also love pet-breeding games.
There could be other reasons too. When people are stressed sometimes they don't greet people not because they are embarrassed or that they are afraid, but that they just don't see the point of doing it.
It is okay if there are duplications. So I say a behavior that is really a catagory, you could still post a specific example of it.
Happy Behavior 10
Becoming forgetful or disconnected from the surrounding. Specific example: running out in the wrong clothing, with comb still in hair.