The word 'Beyn' orginated from Hinde House Secondary School, it was first referred to as 'Bean', and after constant used it evolved to 'Beyn'. The word is commonly used when someone does or says something stupid or maybe says something weird, stuff along those lines, and therefore they're called a 'Beyn'.
A bitch who taught a class at a school that tried to blame someone for something they hadn't done. - Cutting a sewing machine wire. She also was a fatty.