"condition that the movie as well as the International Organization of Zerophiliacs claims affects approximately 1,000 or more people in the world, who have an extra "Z" chromosome. Following their first experience of sexual intercourse, Zerophiliacs begin to change gender whenever they are sexually aroused."Here's the trailer from youtube:
The film's official website is still on-line.
In one scene, the main character is male, but starts to transform into a female while on a date with a female. In sum, he quickly develops realistic breasts. Otherwise, the filmmaker used male and female actors for the various roles.