shock
n.— «Remove debris from swimming pools, then add a chlorinator, either the 10 percent sodium hypochlorite solution sold in the familiar yellow jugs or the 65 percent calcium hypochlorite granules, commonly known as shock.» —“How To Deal With Flooding” Miami Herald (Florida) Aug. 25, 2005. (source: Double-Tongued Dictionary)
Further reading
Carmen in Jacksonville, Florida, was told she was pretty as a speck of puff. The more common simile is pretty as a speckled pup or cute as a speckled pup. This is part of a complete episode.
Related
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...