look up any word, like kappa:
A Bechan is a girl who is absolutely and totally stupid, some would say borderline retarded. One who thinks she knows it all but actually knows little to nothing...about anything. The type of person who everyone is ok with face to face but as soon as she turns the corner the claws come out.
Person 1: Oh my word, this girl is so stupid, she must have an IQ of about 6

Person 2: Yeaaaaah, mate she's a Bechan

Person 1: Ahhhh that explains it then
by Johnny3000 November 04, 2010