chef’s arse
n.— «It’s bloody hot in here. So you get the condition commonly called chef’s arse, because all the sweat runs off your back and between your cheeks.» —“This much I know” by John Hind Observer (United Kingdom) July 30, 2006. (source: Double-Tongued Dictionary)
Further reading
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
Candace from Berea, Kentucky, got married a few weeks ago and wonders: At what point does a person start being a bride? When, if ever, do they stop being a bride? This is part of a complete episode. Transcript of “How Long is a Bride a Bride?”...
Outside of cooking, this condition is often known as “swamp ass.”