What is gender? Classmates do not know ...

For what when registering on sites there are ticks "M" and "F", I used to think that it was not to just be.
But after I, when registering on the floor with the letter “M”, I received a letter with a notification about the new message, and a modest signature: “Participate in the photo contest“ Become a Princess ”and win a fabulous journey!”, I wanted to write to the developers about the new the potential of their resource is the transformation of a male into a " princess ".