Psychotic siblings?

How weird are your siblings? I have three older brothers......... two are normal, and one is plain strange............ if you are a very smart person, and know very deep details about the chaos theory and multiverse theory, then you are probably like him........... he likes to freak me out by "sensing" demonic presences........... he also likes to call me stupid, just because i am not as cynical. What makes YOUR siblings strange?