Naomi Wilzig is a Jewish grandmother unlike any other. Over the course of fourteen years, she collected approximately 4000 works of erotic art and penned five books about the genre. "We look at sex as such a forbidden subject. But where would we be without it?" asks Wilzig. But the enormous phallic sculpture in Stanley Kubrick's A Clockwork Orange served little purpose in her living room -- to call it a conversation piece was an understatement. So she moved the Japanese shunga prints, the portraits of a shapeshifting Zeus in prime seductive form, and renditions of coquettish Rococo ladies into a mezzanine over on Washington Avenue. There the art smolders silently over the nightclub sex circus below, just blocks from Club Madonna. The museum is open from 11:00 a.m. to midnight; admission is $15.