Part ONE - Shauna Skye - A Helping Hand - My step-sister has always been a slut, and sure enough here she is moving back home, pregnant, single, and what do you know, skinny dipping in the back yard. I have heard her masturbating at all times during the day. It is driving me crazy; the least she can do is help me out. I get her to finally give in and jerk me off, but once she has my dick in her hand she starts teasing me until I am really aching. Finally she lets me blow my load, but I think she wasn't doing it like that to "teach me a lesson" like she said. I think she liked having my cock in her hands.