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

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.