In a Lonely Place
The non-alcoholic version of the drink is referenced in at least two film noir movies from 1950: "In a Lonely Place" with Humphrey Bogart, in which Martha Stewart—playing the hat-check girl—states that adding a twist of lemon to ginger ale is called a "Horse's Neck"; and "Outside the Wall", in which Dorothy Hart tells Richard Basehart the two ingredients that compose the cocktail.