I was sitting there playing my favorite fighting game online when all of a sudden, my step-brother's girlfriend bursts into the room and removes her towel. I freak out and tell her to get out and get dressed before my step-brother finds out, but she insists on having fun with me first! She proceeds to instruct me to lay down as she begins to sit on my face! She finishes her orgasm just in time before my step-brother returns!