A joyfully twisted action comedy in which a cop falls in love with a woman who   joins a female hit-squad specializing in breaking limbs and castration. This     great guilty pleasure is presented in its original, uncut version. With          Chingmy Yau, Simon Yam and Carrie Ng. In Cantonese with English subtitles.     Clarence Fok---Hong Kong---1992---88 mins.