ride jockey
n.— Note: The Historical Dictionary of American Slang dates this use of “jockey” meaning “an operator, handler, or worker” to 1908. «Dodson joined the Louisiana fair Wednesday.…Before working the games, or the “joints” as they’re called, Dodson was a “ride jockey.”» —“State Fair opens in Shreveport” by Tarah Holland Shreveport Times (Louisiana) Oct. 26, 2007. (source: Double-Tongued Dictionary)
Further reading
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