Some people are looking for a fight or an argument, and will deliberately say something that they know bothers another person. That's why we often say it is best not to engage with that sort of person. They know they are wrong. They already know you disagree. But if they get you to respond, then you might end up getting in trouble because you fell for their tricks and it looks like you started the argument. Nobody made you the boss of them, or put you in charge of deciding what's okay to say. You were doing that with your brother, now you're doing it at work. Just worry about doing YOUR best, seriously. I understand how you feel. I think maybe you feel a little left out? I was - I just didnt realize it, I was so used to being excluded at home. Do you have any friends at work? I would hide out there!