A subset of African Americans, typically Afro-punks, who have a passion for horror, monster movies, props and other accoutrements that would lend them to an Addams Family type lifestyle. The typical monstafarian studies fear-reactions and spends time devising ways to make other people uncomfortable. They are extremely rare yet very interesting if encountered.
Have you met Giant Jim? He's a Monstafarian with the skull-beads in his dreads.