rat-racing
n.— «A pilot’s first taste of “rat racing” in trail, leader trying to shake those following, came with the Texan.» —by Jeffrey L. Ethell Fighter Command July 1, 1991. (source: Double-Tongued Dictionary)
Further reading
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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...