Κοιμάμαι με την ετεροθαλή αδερφή μου και λίγο έλειψε να μας πιάσουν να γαμιόμαστε

As is customary with us, my stepsister and I decided to fuck on a certain night. No one was supposed to be home, but we were so surprised to hear the doorknob opening, so we turned off the lights and pretended nothing had happened.