Gaff (clothing)

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A gaff, used by trans women and cross-dressers

A gaff is a piece of fabric, usually augmented by an elastic such as a rubber band, that is designed to hide the male genital bulge. It is usually worn by trans women or male cross-dressers. Since the 2010s, underwear manufacturers have begun to design underwear with the same function as gaffs. Home-made gaffs are usually made by cutting the ends off a single sock, and then placing a pair of elastic loops through them.[1] The main function of gaffs or underwear that replicates gaffs is to make the male groin appear smoother and flatter in order hide the male crotch bulge,[2] also sometimes referred to by the slang terms moose-knuckle[3][4] or man-bulge.[5][6]

Similar products[edit]

In 2019, Pornhub, an adult entertainment company developed a boxer short brand that is designed with an inner lining that prevents erections from protruding through clothes, thus concealing the public visibility of the moose-knuckle (male genital bulge).[7]


  1. ^ Pajer, Nicole (May 1, 2019). "There Are New Options in Trans Underwear" – via
  2. ^ Lease, Bryce. "Dragging rights, queering publics: realness, self-fashioning and the Miss Gay Western Cape pageant." Safundi 18.2 (2017): 131–146.
  3. ^ "5 famous moose knuckles exposed". Channel 24. Retrieved 19 January 2019.
  4. ^ "Declan Donnelly's trouser bulge was very very distracting on last night's I'm A Celeb". The gay UK. Retrieved 19 January 2019.
  5. ^ Harris, Michael. "If Clement isn't fit for caucus, why is he fit to be anyone's MP?". Ipolitics. Retrieved 19 January 2019.
  6. ^ Bilton, Ross. "Size flatters". The Australian. Retrieved 19 January 2019.
  7. ^ "Pornhub sells swimming shorts that hide erections". NewsComAu. May 22, 2019.