This is an interesting concept. In heterosexuals, virginity comes to an end upon the first complete act of sex with an opposite sex partner. Even this may not be a black and white line that is crossed, as what constitutes the act of sex is generally up to interpretation. Even as the interpretations may differ, the constant that remains is a sexual act between two members of the OPPOSITE SEX.

In homosexual sex, what determines the end of virginity? If you've never had sex with a member of the opposite sex, does that mean you're still a virgin? Or do you have to perform a specific sexual act with a sexual partner to lose your virginity? Time to propose an official act that indicates the end of both heterosexual and homosexual virginity: deriving physical sexual pleasure as a direct result of the actions of your partner.