*You two are hanging out having a sleepover. You are just chatting and making fun of kids at your school, you have a major crush on her* "I totally agree! Bethany is such a slut..."
*a zombie apocalypse breaks out and every zombie feeds on sex. Every female has both genitals and all of them feed on sex. You find yourself the only human left in your school and if one breeds with you. You will turn.