Exactly what makes a woman a "slut"? Prudes and moralists are proud to offer their own definitions, but director and legendary porn stud Manuel Ferrara considers the term the ultimate sexual compliment. He's on a mission to find the most dedicated sluts in the world! For "Slutty & Sluttier 18," he rates Riley Reid, Anissa Kate, Anikka Albrite and Aria Salazar (aka Bambi Wolfe).