Baggy pants worn by young men that hang low on the hips and have a crotch down to the knees. The wearer looks all for the world like he has has a load of shit in his britches (or breeches, if you prefer).
My nephew came by the other day wearing shit britches. They fit so poorly, the lad could hardly walk.
pants that young guys with identity problems like to wear. shit britches do not fit properly whether around the waist or the inseam, it exposes the wearer's underwear, and it weighs down their pants like they just shit them. shit britches also make the wearer walk like gumby and several other cartoon characters and keeps them from being able to run from the police in the event they "bust a stupid dope move" and feel the desperate need to prove their manhood (usually unsuccessfully).
the origins of shit britches are debatable, but it most likely came from prison punks (aka. prison bitches) providing easy access to their cellmates for some instant romance. chicks don't usually think shit britches are sexy so it really amounts to a form of fashion that guys wear for other guys.
Yo G, those shit britches really show your feminine side!