My dear 15 years old sister,

Please fix this rotten attitude problem of yours, before we all lose patience with you. If you're that dense not to have noticed that this attitude problem is annoying (frankly this is just an understatement) to others, I have nothing to say to you. Nothing. If you don't learn to respect others, how can others respect you? I mean, this is common sense, right? Forgive me if it seems like a rather complex concept to grasp.