A phenomena described in detail by Half Man Half Biscuithttps://www.google.co.uk/url?sa=t&source=web&rct=j&url=https://www.youtube.com/watch%3Fv%3DKbdr-fh76v8&ved=0ahUKEwjDktTTg6fRAhUED8AKHT-kCh8QtwIIIzAB&usg=AFQjCNENjfDdY5uql_1GohHvcYJxivutkA&sig2=N_6UWymkdhrhncGsh5zvzQ Abusive comment hidden. (Show it anyway.)
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