Oh you're my sisters boyfriend?? Ok well wait in here while I go get her. It looks like shes not here but I bet I can help you out. I can see by the bulge in your pants what you had in mind. Here just let me stroke that big cock for you, I'm sure my step-sister wouldn't mind. Oh my thats a lot of cum I can see why my step-sister is dating you. Cum back again soon and maybe we'll both give you a hand