rat
n.— «A rat, in the parlance of Connecticut state legislators, is a bill or an amendment slipped in quietly to favor a friend or a special interest. Two Hartford City Council members recently schemed to sneak through a rat. They had the audacity to think they could get away with it.» —“While the cats were away…” Hartford Courant (Conn.) Oct. 20, 1998. (source: Double-Tongued Dictionary)
Further reading
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...
Have you ever googled your own name and found someone else who goes by the very same moniker? There’s a word for that: googleganger. Plus, the language of hobbyists and enthusiasts: If you’re a beekeeper, perhaps you call yourself a...