in a pink-walled bedroom , decorated with posters of justin bieber , best friends zoe and eleanor settle themselves on to the bed and press play on the webcam of their computer .
but they 're not about to video-chat with friends or a relative abroad .
what they 're doing is far more pernicious -- and will be horrifying to parents everywhere .
` if we say you are not pretty or good looking , do n't get offended , ' pipes up eleanor , issuing the standard disclaimer for videos of this kind that