Seriously it doesn't even make sense. This statement is not a personal attack. It is said when someone believes the other person is lying. I don't know why this has to be explained even? Even a kid understands that. Also here I'm not personally attacking you but I am merely stating that it is the truth. Anyone understands why one person will make this statement to other because he believes that person is lying. Same was this case and this is the reason why I said it? Do you still think it's a personal attack. A personal attack is when I would have deliberately insulted someone or passed vulgar comments which I never did.