Y-fronts(In Britain ... briefs are often referred to as "Y-fronts". The term derives from the inverted Y-shape formed by the seams at the front of the underpants which purports to allow easy access to the penis for urination. The colloquialism is used even when the fly opening may differ in style, and not actually form the shape of the inverted letter "Y" fly on Cooper Jockey brand briefs. WAD Alexander Demidov)
