pigeon flipping
n.— «Lately, troops say, insurgents have begun using a technique called pigeon flipping: while on patrol, the Marines have noticed flocks of pigeons circling above them, leading them to conclude that supporters of the insurgents have somehow trained the birds to signal when troops are in the area.» —“Looking Out on Hostile Territory” by Chris Allbritton, Sally B. Donnelly Time Nov. 14, 2005. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...