Were you dreaming about Lilly earlier? She was fucking your step-brother and you did sneak a peak, but you did not think that she saw you. Lilly knows you were jacking off to them, so she demands that you now stroke right there in front of her. If you stroke yourself till you cum, she will not tell your step-brother that you were watching them. He is much bigger than you, so you think that this is a good idea. You certainly do not want him to find out that you were creeping. You get out your cock and start to work it as Lilly strips down and shows you all that she has to offer. Your step-brother gets to fuck that sweet pussy anytime he wants to and all you have is your porn.