You're in your room masturbating before it's time to go for a movie and your big step-sister walks in on you! At first she's creeped out but then she notices how much yuor dick has grown and expressed how impressed she is by it, that her little step-bro is all grown up! She then decides she should "help you out" so that you can finish up faster and get moving! She sucks your dick like only a pro could, and lets you lick her pussy in 69 before she rides your cock to orgasm in her tight pussy! Big sisters rule!!! For Aaron