One day you notice your step sisters friends staring at you a lot, you decide its best just to send them a dick pic and see what happens. After a day or two it gets back to your sister. She confronts you and asks for proof that its actually that big. You let her know that you’re a grower and not a shower. And like the good lil step sis she is, she starts sucking you off to get you rock hard. Before you know it your balls deep inside of her while she’s moaning for more.
