Zen martini: A martini with no vermouth at all. And no gin, either.

O’Rourke’s joke hinges on the way “Zen” is popularly associated with radical simplicity and emptiness. A “Zen martini” becomes the reductio ad absurdum of minimalist cocktail culture: remove vermouth (a common martini preference), then remove gin itself, until nothing is left. The humor also pokes at the tendency to label ordinary preferences with spiritual or philosophical cachet—turning a drink order into a lifestyle statement. In a broader sense, it satirizes how consumer culture can commodify “Zen” as an aesthetic of subtraction, while ignoring the discipline and meaning behind the tradition.