It's the spookiest, scariest Bootie ever! It's Halloween Booootie! We've got a Midnight Costume Contest, where we're giving away $200 First Prizes (and a trick-or-treat goody bag) for each of the best costumes in three categories: Best Overall Costume, Best Group Costume, and Scariest Costume. Four rooms of fun for one price!Launched in 2003 by San Francisco DJ duo A Plus D, Bootie is the first and biggest mashup dance party in the world, mashing up pop songs both past and present. With its clever mashup formula, Bootie has been an unstoppable juggernaut for the past 14 years, winning numerous nightlife awards in multiple cities. Keeping one's brain guessing and body dancing with creative song combinations, it's the soundtrack for the A.D.D. generation.