Buttock cleavage

Buttock cleavage is minor exposure of the buttocks and the intergluteal cleft between them, often because of low-slung or loose trousers.

The crena is another formal term for the cleft between the buttocks, and the medical term is posterior rugae.


Photograph by Julien Vallou de Villeneuve (1854)

When faced with indecency issues back in the 1930s, W.G. Cassidy explained in an essay titled Private Parts: A Judicial View that exposure of a buttock cleavage may come under "other private parts" in Australian law, though indecency generally involves exposure of the genital area.[1]

In the early 2000s it became fashionable for young women and men to expose their buttocks this way, often in tandem with low rise jeans.[2][3] The Cincinnati Enquirer called it the "new cleavage", and expressed views that "It's virtually impossible to find jeans to cover your hipbone".[4] In August 2001, The Sun celebrated a "bum cleavage week" claiming that "bums are the new tits".[5] In reaction to this trend, Saturday Night Live aired a parody advertisement in their April 16, 2006 episode for a product called Neutrogena Coin Slot Cream, in which host Lindsay Lohan appeared.[6]

British designer Alexander McQueen was particularly mentioned as the originator of buttock cleavage-revealing jeans, known as the "bumster", in cultural critique Sheila Jeffreys' Beauty and Misogyny: Harmful Cultural Practices in the West.[7] United States Patent 6473908 from 2002 registers a design for trousers with a removable buttock cleavage-revealing portion.[8] In the mid-2000s, Good Morning America reported on a rise of popularity of the buttock cleavage among celebrities.[9]


"Plumber's crack"

The terms plumber butt or plumber's crack (Canadian, Australian and American English) and builder's bum (British English) refer to the exposure of male buttock cleavage, especially on occasions of careless bending over. The expression "builder's bum" was first recorded in 1988. The terms are based on the popular impression that work in these professions frequently involves bending over in locations where bystanders are observing from the rear.[10]

In the Netherlands the term bouwvakkersdecolleté and in Germany Maurerdekolleté is used, which can be translated as "builder's/mason's cleavage". In France, it is usually referred to as le sourire du plombier, which translates to "the plumber's smile".

See also

Wikimedia Commons has media related to Intergluteal cleft.


  1. Cassidy, WG. "Private parts: A judicial view", Southerly (Vol. 34, No. 3), pages 315-319, Sep 1974
  2. Brown, Janelle. "Here come the buns", Salon.com, URL accessed March 12, 2006.
  3. Jennifer D'Angelo, "Cleavage Fashion Flips Upside Down," FOXNews.com, December 5, 2001, URL accessed 12 March 2006.
  4. Daugherty, Gina. "Thong spotting gets easier", The Cincinnati Enquirer, May 29, 2003.
  5. Davies, Anna. "Bum deal: Suddenly, women's bottoms are everywhere. It might seem like jolly, harmless fun, but actually there's nothing innocent about it", The Guardian, August 27, 2001. Accessed February 19, 2008. "Last week was bum cleavage week at the Sun."
  6. "Saturday Night Live Skit - Neutrogena Coin Slot Cream". Youtube.com. Retrieved 2012-08-01.
  7. Sheila Jeffreys, Beauty and Misogyny: Harmful Cultural Practices in the West, page 98, Routledge, 2005, ISBN 0-415-35183-9
  8. Garment having a buttocks cleavage revealing feature, Patent Storm
  9. "Celebrities Are Showing Off Butt Cleavage", Good Morning America, July 25. Accessed February 19, 2008.
  10. "Brewer's Dictionary of Modern Phrase & Fable", by John Ayto, Ian Crofton (2006) ISBN 0-304-36809-1, p.121
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