DIABLO PICANTE - WALNUT WITH A SURPRISE THONGWALNUT WITH A SURPRISE THONG It contains a walnut with a red thong inside it to give it to your friend as a flirt or prank. They are very funny. The walnuts are very well made, they seem real. Diablo Picante, pioneers in Spain in the manufacture of fun items with erotic themes for all kinds of celebrations: bachelor parties, birthdays, retirements, jokes, night parties and any other event with friends and colleagues.