Whenever me and my sister get's into trouble and it involves are brother. Well he usually starts it. He never get's into trouble from our mom. The only people he gets into trouble with is my dad and grandma and I think it's wrong. I don't know what to do. We get yelled for no stupid reason by our mom when we get into trouble and our brother is involve. When he is involve and we try to defend ourselves(me and my sister) he calls us(my brother) the be word and some other words that I don't remember. Will someone give me some advice.

Have you talkd to your mom about this? Does she know he is calling you and your sister nasty names?

Talk to your parents, Talk to them together.

Yea my mom knows she is in the room and she doesn't get on him for it. She never does.

Have you talked to your parents, told them how this makes you feel?

No but my sister has and she still don't care.

You talk to both of them together. Your father needs to know about this too, but don't pit one parent against the other.
How old are you and your sister and how old is your brother?

I'm 15 and 1/2. I'll be 16 nov. 5th. My sister is 13. My brother is 17.

You need to talk to your parents together, or maybe your grandmother and she can talk to your parents.
Your brother should not be calling you or any other female that name.