Young Brunette Girl Undresses Her White Chemise And French High-cut Briefs At Home

In Britain, the term "jockeys" has not caught on and 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.
In Australia, briefs are referred to as "jocks", but should not be confused with jockstraps (more specifically used by athletes) which expose the buttocks. Australians generally use the word briefs to refer to the bikini-style underwear for men, which do not have the Y-front opening.
In the United States, a slang term for briefs is "tighty-whiteys" (with various spellings and inversions: "tidy-whities", "whitie-tighties", etc.). The exact origin of the term is unknown, but it has often been used as an epithet.
In recent years, a hybrid called boxer briefs has become popular. Like boxers, they have short legs, but like briefs, they are made of elastic, snug-fitting material. A shorter version of boxer briefs are called trunks.