[tristia]

I would all think it all goes back to early in human history where that one human did something unacceptable or different and was outcasted for it. Because humans have reasoning... it felt ashamed, or emberassed because it did something outside of the norm that basically in escence got it in trouble or punished. Then it becomes a learning tool as to what you should and shouldnt do again.

Think about it, you say something about one of your friends and it just so happens they are standing right behind you, they either laugh at you or get angry with you, you get emberassed. Its kind of the same idea. Then you know to look over your shoulder next time.

Its because humans use reasoning to learn, do something stupid, get emberassed, know not to do it again, you reason that you shoudnt because you didn't like the feeling you had when you first screwed up.

just my take on it.