Some of the city's best milonga gay (gay tango nights) held Wednesdays at Maipú and Saturdays at its Rivadavia location from 11 P.M. till late. During one, a wiry Dali-mustachioed giant leads a girly boy in sequined ruby slippers. Elegant old lesbians with hair swept up glide across the floor. Argentines are almost obsessively sexual; let the tango light those lusty fires.