The shopping list doesn’t need to be additive, that’s just one way of interpreting what the wife wrote. There is no one correct way to read a joke as a program (my whole point), that is unless you write an interpreter for jokes :P

function getGallonOfMilk() {
  return 1;
}

function getDozen() {
  return 12;
}

const hasEggs = store.checkInventory(“eggs”);

const result = (
  getGallonOfMilk(),
  hasEggs && getDozen()
);

console.log(result * "🥛"); // 🥛🥛🥛🥛🥛🥛🥛🥛🥛🥛🥛🥛