The ugly chick you fuck on a regular basis when all other chicks have hated on you. In other words, she is the plan C of your night at the bar. She is preferably fat and/or STD infected. The banghorse always swallows. Keep in mind: She is not a friend with benefits because she is not your friend; she's just the ugly chick that you met at the deli and now you fuck.
A gangster in school or other community, greatly respected or feared by other people. Makes a lot of trouble to teachers and such.
Milla: What did The Bacnhou do this time? :o
Makke: She broke all the windows from chemistry class room.. With a baseball bat.. She was pissed of by..
(Banchou comes by)
Milla: ..Ba-ba-banchou..I mean Mary, we-we-we weren't talking shit about you behind you'r back or anything..(Augh!)
Mary The Banchou: Don't call me banchou in public like this..