My brother is not your brother, so stop acting like they're the same
Okay, I get it. You dislike your brother. You had that nice little stereotypical hateful relationship. And yeah, he was kind of a stupid jerk, I agree. But my brother is not your brother. My brother and I are friends. My brother's not a stupid little bi**h like yours. Stop pretending that he isn't. Stop screwing around with him just because you think that's what siblings do, because it's not. That's not what any of our friends do and you know it, and it's not anything like how you treat your little sister, so it's not like you can possibly think that's the way it's supposed to be. If you wanna be an idiot about hating your brother, that's cool with me. Just stop trying to make me feel that way about my brother.