Last night I was talking to mommy, and she let it slip that you need viagra just to get it up for her anymore. She said you have erectile disfunction, but I know that isn't true. Otherwise, why would your cock be throbbing just looking at me in this little T-shirt? I won't tell mommy our little secret, but only if you stroke your cock for me. I want you to jack off looking at your step-daughters body. I'll tell you how to stroke it Daddy. Once you're done with me, all you'll have to do when your with mommy is close your eyes, and imagine my body instead of hers.