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1.
Prison term used to define the way homosexual inmates wear their boxer shorts; they wear them backwards for easy access.
Officer notices that inmate exits the shower area with his boxers on backwards, indicating that there has been some recent homosexual activity or such is imminent involving the inmate. Inmate is wearing his bitch britches to advertise he's open for business.
by Sweetbabycorn September 09, 2006
 
2.
a sly way to insinuate someone's bitchy nature.
OMG, Giuliana totally pulled on the bitch britches today!

UGH, look at that Michelle with her big green bitch britches all up in her donk!
by stinkyunicorntrousers March 27, 2009