I'm going to tell my dad I hate him
Why would you tell him you hate him?
He's a wanker and he's aggressive
I understand, but it's wrong to hate your parents. You should try and settle your differences.
I'm going to tell him that after I eat dinner.
You should try and be more rational when you talk to your dad. He might bother you, but you may be able to work through your differences by talking about how his behavior affects you. It can be hard to hate family members, so if you can avoid feeling that way it would be better.