My brother is always embarrassing me

I'm close to all my sibling except my brother, he's 16, and he loves embaressing me where ever we go, when I'm on my period, he keeps going' around tellin' everyone, and when I'm shy from some guy, he tells the guy that I'm shy from him, etc.
Doesn't he feel bad after doin' this to me and putting me in a bad situation?
He hits me without using his body! thats how he embaresses me!! It's so bad, and he never does that while my parents are around!!
Can't I ever trust him?
How can I make him understand that it's not nice to embaress people like that?
Why is he doing this to me? He never does it to any one else! Why me? He has another younger sister, I mean.. Why me?!!!
Please help! I can't handle him anymore!!

O.K. #1 that's just how brothers are, I know it sucks but eventually you have to get used to it, #2 he probably picks you to pick on because, you are older, and you probably show that you are embarrassed more then your little sister, she probably doesn't care what people think! Don't let him see that it bugs you! Also you can talk to your parents. Or talk to HIM he's 16, he needs to learn to grow up and be immature...

Ask your parents for protection. If that is not enough you can find somebody else.

is it ok to hump stuff???