Isaacs frequently amuses talk show hosts and friends with the bizarre, contradictory reality of his daily dietary habits. Despite being a fiercely committed vegan for years, he freely admits that he absolutely despises the taste, texture, and existence of actual vegetables. When invited to high-profile dinner parties or cooking shows, he routinely sends ahead a formal apology to the hosts, warning them that they are about to cook for a vegan who actively refuses to eat greens. He prefers to live almost entirely on mock meats, carbohydrates, and vegan junk food, jokingly defending his lifestyle by noting that a plant-based diet provides specific biological benefits for men's health.