The "Last Dab" is a popular hot sauce featured on the YouTube series Hot Ones, where celebrity guests eat chicken wings coated in various hot sauces. The sauce is known for its extreme heat, made with Pepper X, which is one of the hottest peppers in the world. It is typically added as a final touch to the last wing, hence the name "Last Dab." Created by Heatonist, the Last Dab sauce has gained a cult following due to its unique flavor and intense spiciness. It is often used by fans and home cooks who enjoy experimenting with hot sauces in their dishes, adding a fiery kick to meals.