Adults will be able to apply to alter the sex recorded on their Victorian birth registration and birth certificate.
Under the changes, an applicant will be able to nominate the sex descriptor in their birth registration as male, female or specify a gender diverse or non-binary descriptor.
so two gay men want to get married - so one goes the state birth register (or whatever it is called), and claims that he identifies as a female - and gets an appropriate certificate ... then they go to the commonwealth registry office (or wherever he chooses to be married) marries his boyfriend. the officiating officer (or marriage celebrant) checks the paper work - and sees that it is a male and female that he is marrying - so stamps the relevant paper work