The Exotic Erotic Ball was held every year around Halloween time in the San Francisco Bay Area of California and was the longest-running open grown-up themed occasion in the world. Due to the overall ubiquity of the occasion the City of San Francisco issued three declarations for "Colorful Erotic Ball Day", twice by Mayor Willie Brown in 1999 and again in 2001, and once by Mayor Gavin Newsom in 2004. In 2011 and 2012, comparative however disconnected occasions, Masquerotica and the XO Ball and Expo, individually, filled the void left by the downfall of the first Exotic Erotic.
Many attendees of the Exotic Erotic Ball went to the occasion in fiercely intricate, imaginative, and provocative Halloween outfits to contend in the yearly "Best Costume" challenge which in later years regularly granted the victor prize cash and stock in the $10,000 USD extend. While the Exotic Erotic Ball by definition would be viewed as a "Celebration" the occasion is seldom ordered into traditional terms by participants, the media, or occasion coordinators. In view of the expansive range of traditional and unpredictable stimulation offered on numerous phases at the Exotic Erotic Ball, it might be portrayed as a mix of Adult-themed; Halloween celebration, Music Festival, Burlesque show, Lingerie party, Masquerade ball, Fetish club, Swingers gathering and Adult Industry Trade Show.