doo-doo water
n.— «Then there is what the department affectionately refers to as “doo-doo water,” a brackish substance used by the department that simulates the environment mosquitoes thrive in.» —“Fighting the invasion” by Kipp Hanley Potomac News (Woodbridge, Virginia) Sept. 30, 2007. (source: Double-Tongued Dictionary)
Further reading
A magnificent new book celebrates the richness and diversity of 450 years of written and spoken English in what is now the United States. It’s called The People’s Tongue, and it’s a sumptuous collection of essays, letters, poems...
When Ana first arrived in the United States from Hungary, she was taken aback when someone greeted her with the idiomatic expression How’s it hanging?. She was also puzzled by the expression trim the tree meaning to “adorn a Christmas...