Think Groucho and comedy, not Karl and communism. Along with his brothers Chico, Harpo, and Zeppo, Groucho Marx starred in the 1932 comedy film "Horse Feathers" (horsefeathers is old American slang, sort of a polite version of the word that rhymes with "wool mitt"), one of their many comedic cinematic ventures. Benny Roff included the Horsefeathers in his book Prohibition Cocktails, and I learned about it from My Dad Made a Cocktail on Instagram.
Combine in a mixing glass with ice, stir with some Marx Brothers madcap hilarity, and strain into a chilled glass. Orange peel garnish optional.
The Horsefeathers is sort of sweet, which isn't surprising considering it includes rum (a sugar cane based spirit) and two liqueurs. You see the Benedictine DOM in drinks such as the Monte Carlo, and maraschino liqueur in drinks such as the Last Word, which predates the Marx Brothers movies by more than a decade. The cognac kicks in at just the right moment. Don't let the sweetness of the Horsefeathers fool you, because every spirit in it is strong. If you want a drier Horsefeathers, try adding .5 ounces of cognac and subtracting .5 ounces of rum. Go with aged rum here because it has more liquid gravitas.
The Horsefeathers is a solid and delicious drink. No horsefeathers.