Talk to your girl friends. Don't any of you stand for junk like this. They're dissin' you. You deserve respect. If they're doing it to you, they're doing it to other girls, too.
Last thing's the hardest.
You gotta tell somebody what you're going through. Don't hold it inside where it hurts. If you can't talk to your parents, go to a school counselor or your teacher. Find somebody who's got the power to do something for you. Those boys think you're a dishrag they can walk on.