I'm mad and I don't want to babysit my autistic brother
Why do you not want to babysit your autistic brother?
My parents always boss me around and he is such a brat.
I understand that you do not want to babysit your autistic brother because you parents bosses you to and your brother is a brat. But it is good to help out your family, especially a disable family member.
He is just a burden.
I don't think it's fair to call your little brother a burden. He is just trying his best to cope with his problems, and I believe you need to be their no matter what, good or bad. He is your brother and I'm sure he appreciates all that you try to do!