Not a sibling, but my best friend's Dad constantly tells her that she's fat, even though the girl weighs max 130 lbs. So she battles with anorexia and bulemia. She'll go on week long fasts where all she consumes is juice, or she'll eat and huge meal and then purge in the bathroom 10 minutes later. She's been seeing a psychiatrist since she's 14, and nothing seems to help.

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brodie: ladies and gentleman, this tall drink of water headed my way is a pillar of the shopping community who informed me earlier today of a nefarious plan of his to screw my girlfriend in an extremely uncomfortable place
gil: what, like the back of a volkswagen? -MALLRATS