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Call me a narrow-minded clothes prude, but a Victorian-era white mask is just not a sexy accessory. When a guy straps one on, he looks like either the knife-wielding maniac from Halloween or, even more disturbing, Tom Cruise from Eyes Wide Shut. And all manner of kinky thrills are totally lost from Showtime skinfest Red Shoe Diaries when letch director Zalman King obscures the mug of one of his nekkid starlets. And yet, for tonight’s “6th Annual Summer Masquerade Ball,” randy partygoers are encouraged to wear these or other unsettling masks. Belly dancers, fetish fashionistas, various freaks, and such beat-mad spinsters as DJ Hardware, DJ POGO, and The AntiDJ will also be there to add to the shindig’s offbeat mood. And that’s fine—completely bizarre but fine. But those masks? Creee-peee, if you ask me. Make sure you know who’s dancing with you at 8 p.m. at Bohemian Caverns, 2001 11th St. NW. $25. (202) 299-0800. (Sean Daly)